Check Defect Detection
The CFM service allows different types of defects to be detected in the network through the processing of CFM datagrams received on a network interface. The following scenarios show how, with different configurations, these defects are detected, and how to configure the service to avoid detecting certain defects.
Detect XconCCM Defect Due To Low Level
Description
In this scenario, a CFM service with domain level 6 is configured in DUT0. However, in DUT1 a CFM service with domain level 5 is configured. This causes CFM datagrams to be received in DUT0 with a domain level lower than its own and, consequently, XconCCM type defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 5 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefXconCCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefXconCCM FNG last reported defect: DefXconCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefXconCCM FNG last reported defect: DefXconCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:05:55.411792
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:05:57.458479 2024-07-30 12:05:53.913567 2 21.42
Note
After reconfiguring the CFM service with domain level 6 in DUT1, DUT0 will no longer receive CFM datagrams with a domain level lower than its own and, consequently, XconCCM type defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefXconCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefXconCCM Last sent sequence number: 10 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 5 down up up 2024-07-30 12:05:58.879455
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:06:03.966570 2024-07-30 12:05:57.458479 3 62.74
Detect XconCCM Defect Due To Wrong MAID
Description
In this scenario, a CFM service with Maintenance Association (MA) TEST_SERVICE is configured in DUT0. However, in DUT1 a CFM service with MA OTHER_TEST_SERVICE is configured. This causes CFM datagrams to be received in DUT0 with a wrong Maintenance Association Identifier (MAID) and, consequently, XconCCM type defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE mep 20 rmep 10 set service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefXconCCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefXconCCM FNG last reported defect: DefXconCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefXconCCM FNG last reported defect: DefXconCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:06:11.264667
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:06:13.302486 2024-07-30 12:06:09.759118 2 20.78
Note
After reconfiguring the CFM service with MA TEST_SERVICE in DUT1, DUT0 will no longer receive CFM datagrams with a wrong MAID and, consequently, XconCCM defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
delete service cfm domain TEST_DOMAIN service OTHER_TEST_SERVICE set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefXconCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefXconCCM Last sent sequence number: 11 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 6 down up up 2024-07-30 12:06:15.040328
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:06:20.863488 2024-07-30 12:06:13.302486 3 63.97
Detect ErrorCCM Defect Due To Same MepID
Description
In this scenario, a CFM service with MEP Identifier (MepID) 10 is configured in DUT0. Likewise, in DUT1 a CFM service with MepID 10 is configured. This causes CFM datagrams to be received in DUT0 with a MepID equal to its own and, consequently, ErrorCCM defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefErrorCCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:06:29.338929
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:06:31.382051 2024-07-30 12:06:27.836338 2 20.54
Note
After reconfiguring the CFM service with MepID 20 in DUT1, DUT0 will no longer receive CFM datagrams with a MepID equal to its own. Consequently, ErrorCCM defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
delete service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM Last sent sequence number: 10 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 5 down up up 2024-07-30 12:06:32.802725
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:06:37.892023 2024-07-30 12:06:31.382051 3 62.28
Detect ErrorCCM Defect Due To Wrong Interval
Description
In this scenario, a CFM service with interval 1s is configured in DUT0. However, in DUT1 a CFM service with interval 10s is configured. This causes CFM datagrams to be received in DUT0 with a wrong interval and, consequently, ErrorCCM defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 10s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefErrorCCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:06:46.385345
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:06:48.434014 2024-07-30 12:06:44.892673 2 20.34
Note
After reconfiguring the CFM service with interval 1s in DUT1, DUT0 will no longer receive CFM datagrams with a wrong interval. Consequently, ErrorCCM defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM Last sent sequence number: 39 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 34 down up up 2024-07-30 12:06:49.757253
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:07:23.436367 2024-07-30 12:06:48.434014 3 88.93
Detect ErrorCCM Defect Due To Unknown Remote MepID
Description
In this scenario, a CFM service with remote MepID 20 is configured in DUT0. However, in DUT1, a CFM service with MepID 30 is configured. This causes CFM datagrams to be received in DUT0 with an unknown remote MepID. Consequently, ErrorCCM defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefErrorCCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefErrorCCM FNG last reported defect: DefErrorCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:07:31.389812
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:07:33.537091 2024-07-30 12:07:29.895808 2 19.78
Note
After reconfiguring the CFM service with MepID 20 in DUT1, DUT0 will no longer receive CFM datagrams with an unknown remote MepID. Consequently, ErrorCCM defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
delete service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefErrorCCM Last sent sequence number: 11 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 6 down up up 2024-07-30 12:07:34.965751
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:07:40.994332 2024-07-30 12:07:33.537091 3 63.86
Avoid Detect ErrorCCM Defect
Description
In this scenario, a CFM service with remote MepID 20 is configured in DUT0. In DUT1, a CFM service with MepID 30 is configured. This causes CFM datagrams to be received in DUT0 with an unknown remote MepID. Consequently, ErrorCCM defects are detected. However, the CFM service can be configured so that it doesn’t detect defects under a certain priority level. Since the ErrorCCM defect has a priority of 4, by configuring a minimum detection level of 5 in DUT0, ErrorCCM defects are not detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm min-notification-level 5 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 30 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone Last sent sequence number: 11 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:07:49.383896
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
--------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) --------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:07:47.888847 1 0.74
Detect RemoteCCM Defect
Description
In this scenario, a CFM service with remote MepID 20 is configured in DUT0. However, in DUT1 the CFM service is not configured. This causes CFM datagrams of the expected remote MepID to not be received in DUT0. Consequently, RemoteCCM errors are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefRemoteCCM defect.
Step 4: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: up FNG state: defect reported FNG current defect: DefRemoteCCM FNG last reported defect: DefRemoteCCM \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: up Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefRemoteCCM FNG last reported defect: DefRemoteCCM Last sent sequence number: 4 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:08:07.315649
Step 5: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:08:09.845921 2024-07-30 12:08:05.826405 2 12.13
Note
After configuring the CFM service with MepID 20 in DUT1, DUT0 will receive CFM datagrams with the expected remote MepID. Consequently, RemoteCCM defects will no longer be detected.
Step 6: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 7: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefRemoteCCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefRemoteCCM Last sent sequence number: 8 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 3 down up up 2024-07-30 12:08:11.418988
Step 8: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:08:13.944124 2024-07-30 12:08:09.845921 3 46.50
Avoid Detect RemoteCCM Defect
Description
In this scenario, a CFM service with remote MepID 20 is configured in DUT0. But, in DUT1, the CFM service is not configured. This causes CFM datagrams of the expected remote MepID to not be received in DUT0 and, consequently, RemoteCCM errors are detected. However, the CFM service can be configured so that it doesn’t detect defects under a certain priority level. Since the RemoteCCM defect has a priority of 3, by configuring a minimum detection level of 4 in DUT0, RemoteCCM errors are not detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm min-notification-level 4 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 4: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone \s+20\s+failed\s+0\s+down\s+not available\s+not availableShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone Last sent sequence number: 10 Out-of-sequence CCMs: 0 Remote MEPs: 1 ----------------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ----------------------------------------------------------------------------------------------------------------- 20 failed 0 down not available not available 2024-07-30 12:08:22.562077
Step 5: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
--------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) --------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:08:21.058872 1 0.59
Detect RDICCM Defect
Description
In this scenario, a CFM service with MepID 10 is configured in DUT0. However, in DUT1, a CFM service with no remote MepID is configured. This causes DUT1 to detect a defect and activate its RDI flag, which also causes DUT0 to receive CFM datagrams with the RDI flag in UP. Consequently, RDICCM defects are detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should detect a DefRDICCM defect.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: defect reported FNG current defect: DefRDICCM FNG last reported defect: DefRDICCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+up\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: defect reported FNG current defect: DefRDICCM FNG last reported defect: DefRDICCM Last sent sequence number: 5 Out-of-sequence CCMs: 0 Remote MEPs: 1 --------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime --------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 4 up up up 2024-07-30 12:08:38.112104
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
trueShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM true 2024-07-30 12:08:41.675514 2024-07-30 12:08:37.102744 2 17.81
Note
After configuring the CFM service with remote MepID 10 in DUT1, DUT0 will receive CFM datagrams with the RDI flag in DOWN. Consequently, RDICCM defects will no longer be detected.
Step 7: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 rmep 10
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 8: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefRDICCM \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+down\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefRDICCM Last sent sequence number: 9 Out-of-sequence CCMs: 0 Remote MEPs: 1 ---------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime ---------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 3 down up up 2024-07-30 12:08:38.112104
Step 9: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
----------------------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) ----------------------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:08:45.630373 2024-07-30 12:08:41.675514 3 42.75
Avoid Detect RDICCM Defect
Description
In this scenario, a CFM service with MepID 10 is configured in DUT0. But, in DUT1, a CFM service with no remote MepID is configured. This causes DUT1 to detect a defect and activate its RDI flag, which also causes DUT0 to receive CFM datagrams with the RDI flag in UP. Consequently, RDICCM defects are detected. However, the CFM service can be configured so that it doesn’t detect defects under a certain priority level. Since the RDICCM defect has a priority of 1, by configuring a minimum detection level of 2 in DUT0, RDICCM defects are not detected.
Scenario
Step 1: Set the following configuration in DUT0:
set interfaces ethernet eth0 address 10.0.0.1/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 2: Set the following configuration in DUT1:
set interfaces ethernet eth0 address 10.0.0.2/24 set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
Step 3: Modify the following configuration lines in DUT0:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm min-notification-level 2 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 10 rmep 20 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Step 4: Modify the following configuration lines in DUT1:
set service cfm domain TEST_DOMAIN level 6 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm delay 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE alarm reset 2500 set service cfm domain TEST_DOMAIN service TEST_SERVICE continuity-check interval 1s set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 alarm TEST_ALARM set service cfm domain TEST_DOMAIN service TEST_SERVICE mep 20 interface eth0 set service cfm domain TEST_DOMAIN service TEST_SERVICE sender-id chassis set system alarm TEST_ALARM initial-state true
Note
After a few seconds, the CFM service of DUT0 should not detect any defects.
Step 5: Run command service cfm mep show at DUT0 and check if output matches the following regular expressions:
RDI bit: down FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone \s+20\s+osdx\s+([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}\s+ok\s+\d+\s+up\s+up\s+upShow output
================ === MEP Info === ================ MEPID: 10 Type: down Network: eth0 MAC address: de:ad:be:ef:6c:10 Domain: TEST_DOMAIN at level 6 Service: TEST_SERVICE with no vlan association RDI bit: down Port state: up Interface state: up enableRMEPdefect: enabled FNG state: reset FNG current defect: DefNone FNG last reported defect: DefNone Last sent sequence number: 11 Out-of-sequence CCMs: 0 Remote MEPs: 1 --------------------------------------------------------------------------------------------------------- rMepID SenderID MAC-address Status LastSeqNum RDI Port Interface LastTime --------------------------------------------------------------------------------------------------------- 20 osdx de:ad:be:ef:6c:20 ok 10 up up up 2024-07-30 12:08:54.023204
Step 6: Run command system alarm TEST_ALARM show at DUT0 and check if output contains the following tokens:
falseShow output
--------------------------------------------------------------------------------------- Alarm Status Toggled Prev-toggled Toggle-count Time up (%) --------------------------------------------------------------------------------------- TEST_ALARM false 2024-07-30 12:08:53.015353 1 0.95