Check Incoming Requests

This scenario shows how to configure a user to receive incoming requests in SNMPv3 using VRFs. In addition, the SNMP walk and table commands are checked.

Test SNMP Walk With VRFs

Description

Using VRFs, a user is configured in DUT0 and the walk command is used to check incoming requests in SNMPv3.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set interfaces ethernet eth0 vrf A
set service snmp user USER2TEST
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf A

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address 10.0.0.2/24
set interfaces ethernet eth0 vrf B
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf B

Note

First, remote walk requests shouldn’t work because no information has been specifed in DUT1 about where to route the requests.

Step 3: Run command service snmp walk remote-agent 10.0.0.1 v3 USER2TEST oid ifTable at DUT1 and check if output does not match the following regular expressions:

::ifDescr\.1 = STRING: "?lo"?

Show output

snmpbulkwalk: Unknown engine ID (Sub-id not found: (top) -> ifTable) (Network is unreachable)

Note

Remote walk requests also shouldn’t work because no information has been specified in DUT0 about where to route responses.

Step 4: Run command service snmp walk remote-agent 10.0.0.1 v3 USER2TEST vrf B oid ifTable at DUT1 and check if output does not match the following regular expressions:

::ifDescr\.1 = STRING: "?lo"?

Show output

snmpbulkwalk: Timeout (Sub-id not found: (top) -> ifTable)

Note

After setting the VRF in DUT0, remote walk requests shouldn’t work until information on where to route the requests is specified in DUT1.

Step 5: Modify the following configuration lines in DUT0 :

set service snmp local-vrf A

Step 6: Run command service snmp walk remote-agent 10.0.0.1 v3 USER2TEST oid ifTable at DUT1 and check if output does not match the following regular expressions:

::ifDescr\.1 = STRING: "?lo"?

Show output

snmpbulkwalk: Unknown engine ID (Sub-id not found: (top) -> ifTable) (Network is unreachable)

Step 7: Run command service snmp walk remote-agent 10.0.0.1 v3 USER2TEST vrf B oid ifTable at DUT1 and check if output matches the following regular expressions:

::ifDescr\.1 = STRING: "?lo"?

Show output

IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifIndex.2 = INTEGER: 2
IF-MIB::ifIndex.3 = INTEGER: 3
IF-MIB::ifIndex.4 = INTEGER: 4
IF-MIB::ifIndex.93 = INTEGER: 93
IF-MIB::ifIndex.94 = INTEGER: 94
IF-MIB::ifIndex.95 = INTEGER: 95
IF-MIB::ifIndex.118 = INTEGER: 118
IF-MIB::ifDescr.1 = STRING: lo
IF-MIB::ifDescr.2 = STRING: eth0
IF-MIB::ifDescr.3 = STRING: eth1
IF-MIB::ifDescr.4 = STRING: ip_vti0
IF-MIB::ifDescr.93 = STRING: gre0
IF-MIB::ifDescr.94 = STRING: gretap0
IF-MIB::ifDescr.95 = STRING: erspan0
IF-MIB::ifDescr.118 = STRING: A
IF-MIB::ifType.1 = INTEGER: softwareLoopback(24)
IF-MIB::ifType.2 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.3 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.4 = INTEGER: tunnel(131)
IF-MIB::ifType.93 = INTEGER: tunnel(131)
IF-MIB::ifType.94 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.95 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.118 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifMtu.1 = INTEGER: 65536
IF-MIB::ifMtu.2 = INTEGER: 1500
IF-MIB::ifMtu.3 = INTEGER: 1500
IF-MIB::ifMtu.4 = INTEGER: 1480
IF-MIB::ifMtu.93 = INTEGER: 1476
IF-MIB::ifMtu.94 = INTEGER: 1462
IF-MIB::ifMtu.95 = INTEGER: 1450
IF-MIB::ifMtu.118 = INTEGER: 65575
IF-MIB::ifSpeed.1 = Gauge32: 10000000
IF-MIB::ifSpeed.2 = Gauge32: 0
IF-MIB::ifSpeed.3 = Gauge32: 0
IF-MIB::ifSpeed.4 = Gauge32: 0
IF-MIB::ifSpeed.93 = Gauge32: 0
IF-MIB::ifSpeed.94 = Gauge32: 0
IF-MIB::ifSpeed.95 = Gauge32: 0
IF-MIB::ifSpeed.118 = Gauge32: 0
IF-MIB::ifPhysAddress.1 = STRING:
IF-MIB::ifPhysAddress.2 = STRING: de:ad:be:ef:6c:0
IF-MIB::ifPhysAddress.3 = STRING: de:ad:be:ef:6c:1
IF-MIB::ifPhysAddress.4 = STRING:
IF-MIB::ifPhysAddress.93 = STRING:
IF-MIB::ifPhysAddress.94 = STRING:
IF-MIB::ifPhysAddress.95 = STRING:
IF-MIB::ifPhysAddress.118 = STRING: c2:6f:fd:59:73:14
IF-MIB::ifAdminStatus.1 = INTEGER: up(1)
IF-MIB::ifAdminStatus.2 = INTEGER: up(1)
IF-MIB::ifAdminStatus.3 = INTEGER: down(2)
IF-MIB::ifAdminStatus.4 = INTEGER: down(2)
IF-MIB::ifAdminStatus.93 = INTEGER: down(2)
IF-MIB::ifAdminStatus.94 = INTEGER: down(2)
IF-MIB::ifAdminStatus.95 = INTEGER: down(2)
IF-MIB::ifAdminStatus.118 = INTEGER: up(1)
IF-MIB::ifOperStatus.1 = INTEGER: up(1)
IF-MIB::ifOperStatus.2 = INTEGER: up(1)
IF-MIB::ifOperStatus.3 = INTEGER: down(2)
IF-MIB::ifOperStatus.4 = INTEGER: down(2)
IF-MIB::ifOperStatus.93 = INTEGER: down(2)
IF-MIB::ifOperStatus.94 = INTEGER: down(2)
IF-MIB::ifOperStatus.95 = INTEGER: down(2)
IF-MIB::ifOperStatus.118 = INTEGER: up(1)
IF-MIB::ifLastChange.1 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.2 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.3 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.4 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.93 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.94 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.95 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.118 = Timeticks: (0) 0:00:00.00
IF-MIB::ifInOctets.1 = Counter32: 348455
IF-MIB::ifInOctets.2 = Counter32: 2556526
IF-MIB::ifInOctets.3 = Counter32: 83852
IF-MIB::ifInOctets.4 = Counter32: 0
IF-MIB::ifInOctets.93 = Counter32: 0
IF-MIB::ifInOctets.94 = Counter32: 0
IF-MIB::ifInOctets.95 = Counter32: 0
IF-MIB::ifInOctets.118 = Counter32: 720
IF-MIB::ifInUcastPkts.1 = Counter32: 0
IF-MIB::ifInUcastPkts.2 = Counter32: 0
IF-MIB::ifInUcastPkts.3 = Counter32: 0
IF-MIB::ifInUcastPkts.4 = Counter32: 0
IF-MIB::ifInUcastPkts.93 = Counter32: 0
IF-MIB::ifInUcastPkts.94 = Counter32: 0
IF-MIB::ifInUcastPkts.95 = Counter32: 0
IF-MIB::ifInUcastPkts.118 = Counter32: 0
IF-MIB::ifInNUcastPkts.1 = Counter32: 0
IF-MIB::ifInNUcastPkts.2 = Counter32: 0
IF-MIB::ifInNUcastPkts.3 = Counter32: 0
IF-MIB::ifInNUcastPkts.4 = Counter32: 0
IF-MIB::ifInNUcastPkts.93 = Counter32: 0
IF-MIB::ifInNUcastPkts.94 = Counter32: 0
IF-MIB::ifInNUcastPkts.95 = Counter32: 0
IF-MIB::ifInNUcastPkts.118 = Counter32: 0
IF-MIB::ifInDiscards.1 = Counter32: 0
IF-MIB::ifInDiscards.2 = Counter32: 18
IF-MIB::ifInDiscards.3 = Counter32: 0
IF-MIB::ifInDiscards.4 = Counter32: 0
IF-MIB::ifInDiscards.93 = Counter32: 0
IF-MIB::ifInDiscards.94 = Counter32: 0
IF-MIB::ifInDiscards.95 = Counter32: 0
IF-MIB::ifInDiscards.118 = Counter32: 0
IF-MIB::ifInErrors.1 = Counter32: 0
IF-MIB::ifInErrors.2 = Counter32: 0
IF-MIB::ifInErrors.3 = Counter32: 0
IF-MIB::ifInErrors.4 = Counter32: 0
IF-MIB::ifInErrors.93 = Counter32: 0
IF-MIB::ifInErrors.94 = Counter32: 0
IF-MIB::ifInErrors.95 = Counter32: 0
IF-MIB::ifInErrors.118 = Counter32: 0
IF-MIB::ifInUnknownProtos.1 = Counter32: 0
IF-MIB::ifInUnknownProtos.2 = Counter32: 0
IF-MIB::ifInUnknownProtos.3 = Counter32: 0
IF-MIB::ifInUnknownProtos.4 = Counter32: 0
IF-MIB::ifInUnknownProtos.93 = Counter32: 0
IF-MIB::ifInUnknownProtos.94 = Counter32: 0
IF-MIB::ifInUnknownProtos.95 = Counter32: 0
IF-MIB::ifInUnknownProtos.118 = Counter32: 0
IF-MIB::ifOutOctets.1 = Counter32: 348455
IF-MIB::ifOutOctets.2 = Counter32: 51781387
IF-MIB::ifOutOctets.3 = Counter32: 113445
IF-MIB::ifOutOctets.4 = Counter32: 0
IF-MIB::ifOutOctets.93 = Counter32: 0
IF-MIB::ifOutOctets.94 = Counter32: 0
IF-MIB::ifOutOctets.95 = Counter32: 0
IF-MIB::ifOutOctets.118 = Counter32: 0
IF-MIB::ifOutUcastPkts.1 = Counter32: 1914
IF-MIB::ifOutUcastPkts.2 = Counter32: 48659
IF-MIB::ifOutUcastPkts.3 = Counter32: 876
IF-MIB::ifOutUcastPkts.4 = Counter32: 0
IF-MIB::ifOutUcastPkts.93 = Counter32: 0
IF-MIB::ifOutUcastPkts.94 = Counter32: 0
IF-MIB::ifOutUcastPkts.95 = Counter32: 0
IF-MIB::ifOutUcastPkts.118 = Counter32: 0
IF-MIB::ifOutNUcastPkts.1 = Counter32: 0
IF-MIB::ifOutNUcastPkts.2 = Counter32: 0
IF-MIB::ifOutNUcastPkts.3 = Counter32: 0
IF-MIB::ifOutNUcastPkts.4 = Counter32: 0
IF-MIB::ifOutNUcastPkts.93 = Counter32: 0
IF-MIB::ifOutNUcastPkts.94 = Counter32: 0
IF-MIB::ifOutNUcastPkts.95 = Counter32: 0
IF-MIB::ifOutNUcastPkts.118 = Counter32: 0
IF-MIB::ifOutDiscards.1 = Counter32: 0
IF-MIB::ifOutDiscards.2 = Counter32: 0
IF-MIB::ifOutDiscards.3 = Counter32: 0
IF-MIB::ifOutDiscards.4 = Counter32: 0
IF-MIB::ifOutDiscards.93 = Counter32: 0
IF-MIB::ifOutDiscards.94 = Counter32: 0
IF-MIB::ifOutDiscards.95 = Counter32: 0
IF-MIB::ifOutDiscards.118 = Counter32: 0
IF-MIB::ifOutErrors.1 = Counter32: 0
IF-MIB::ifOutErrors.2 = Counter32: 0
IF-MIB::ifOutErrors.3 = Counter32: 0
IF-MIB::ifOutErrors.4 = Counter32: 0
IF-MIB::ifOutErrors.93 = Counter32: 0
IF-MIB::ifOutErrors.94 = Counter32: 0
IF-MIB::ifOutErrors.95 = Counter32: 0
IF-MIB::ifOutErrors.118 = Counter32: 0
IF-MIB::ifOutQLen.1 = Gauge32: 0
IF-MIB::ifOutQLen.2 = Gauge32: 0
IF-MIB::ifOutQLen.3 = Gauge32: 0
IF-MIB::ifOutQLen.4 = Gauge32: 0
IF-MIB::ifOutQLen.93 = Gauge32: 0
IF-MIB::ifOutQLen.94 = Gauge32: 0
IF-MIB::ifOutQLen.95 = Gauge32: 0
IF-MIB::ifOutQLen.118 = Gauge32: 0
IF-MIB::ifSpecific.1 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.2 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.3 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.4 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.93 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.94 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.95 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.118 = OID: SNMPv2-SMI::zeroDotZero

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Test SNMP Table With VRFs

Description

Using VRFs, a user is configured in DUT0 and the table command is used to check incoming requests in SNMPv3.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address 10.0.0.1/24
set interfaces ethernet eth0 vrf A
set service snmp user USER2TEST
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf A

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address 10.0.0.2/24
set interfaces ethernet eth0 vrf B
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'
set system vrf B

Note

First, remote table requests shouldn’t work because no information has been specified in DUT1 about where to route the requests.

Step 3: Run command service snmp table remote-agent 10.0.0.1 v3 USER2TEST oid ifTable at DUT1 and check if output does not match the following regular expressions:

SNMP table:.*::ifTable

Show output

snmptable: Unknown engine ID (Sub-id not found: (top) -> ifTable) (Network is unreachable)

Note

Remote table requests should also not work because no information has been specified in DUT0 about where to route responses.

Step 4: Run command service snmp table remote-agent 10.0.0.1 v3 USER2TEST vrf B oid ifTable at DUT1 and check if output does not match the following regular expressions:

SNMP table:.*::ifTable

Show output

snmptable: Timeout (Sub-id not found: (top) -> ifTable)

Note

After setting the VRF in DUT0, remote table requests shouldn’t work until the information on where to route the requests is specified in DUT1.

Step 5: Modify the following configuration lines in DUT0 :

set service snmp local-vrf A

Step 6: Run command service snmp table remote-agent 10.0.0.1 v3 USER2TEST oid ifTable at DUT1 and check if output does not match the following regular expressions:

SNMP table:.*::ifTable

Show output

snmptable: Unknown engine ID (Sub-id not found: (top) -> ifTable) (Network is unreachable)

Step 7: Run command service snmp table remote-agent 10.0.0.1 v3 USER2TEST vrf B oid ifTable at DUT1 and check if output matches the following regular expressions:

SNMP table:.*::ifTable

Show output

SNMP table: IF-MIB::ifTable

 ifIndex ifDescr           ifType ifMtu  ifSpeed     ifPhysAddress ifAdminStatus ifOperStatus
       1      lo softwareLoopback 65536 10000000                              up           up
       2    eth0   ethernetCsmacd  1500        0  de:ad:be:ef:6c:0            up           up
       3    eth1   ethernetCsmacd  1500        0  de:ad:be:ef:6c:1          down         down
       4 ip_vti0           tunnel  1480        0                            down         down
      93    gre0           tunnel  1476        0                            down         down
      94 gretap0   ethernetCsmacd  1462        0                            down         down
      95 erspan0   ethernetCsmacd  1450        0                            down         down
     119       A   ethernetCsmacd 65575        0 6e:73:bf:ae:de:ed            up           up

SNMP table IF-MIB::ifTable, part 2

 ifLastChange ifInOctets ifInUcastPkts ifInNUcastPkts ifInDiscards ifInErrors ifInUnknownProtos
 0:0:00:00.00     348759             0              0            0          0                 0
 0:0:00:00.00    2560557             0              0           18          0                 0
 0:0:00:00.00      83852             0              0            0          0                 0
 0:0:00:00.00          0             0              0            0          0                 0
 0:0:00:00.00          0             0              0            0          0                 0
 0:0:00:00.00          0             0              0            0          0                 0
 0:0:00:00.00          0             0              0            0          0                 0
 0:0:00:00.00        720             0              0            0          0                 0

SNMP table IF-MIB::ifTable, part 3

 ifOutOctets ifOutUcastPkts ifOutNUcastPkts ifOutDiscards ifOutErrors ifOutQLen
      348759           1918               0             0           0         0
    51788888          48692               0             0           0         0
      113445            876               0             0           0         0
           0              0               0             0           0         0
           0              0               0             0           0         0
           0              0               0             0           0         0
           0              0               0             0           0         0
           0              0               0             0           0         0

SNMP table IF-MIB::ifTable, part 4

              ifSpecific
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero
 SNMPv2-SMI::zeroDotZero

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