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.

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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 system vrf A
set service snmp user USER2TEST

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 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: Set the following configuration 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.120 = INTEGER: 120
IF-MIB::ifDescr.1 = STRING: lo
IF-MIB::ifDescr.2 = STRING: Red Hat, Inc Device 0001
IF-MIB::ifDescr.3 = STRING: Red Hat, Inc Device 0001
IF-MIB::ifDescr.4 = STRING: ip_vti0
IF-MIB::ifDescr.120 = 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.120 = 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.120 = 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.120 = Gauge32: 0
IF-MIB::ifPhysAddress.1 = STRING:
IF-MIB::ifPhysAddress.2 = STRING: de:ad:be:ef:6c:10
IF-MIB::ifPhysAddress.3 = STRING: de:ad:be:ef:6c:11
IF-MIB::ifPhysAddress.4 = STRING:
IF-MIB::ifPhysAddress.120 = STRING: 4a:e1:f2:96:62:61
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.120 = 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.120 = 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.120 = Timeticks: (0) 0:00:00.00
IF-MIB::ifInOctets.1 = Counter32: 88397
IF-MIB::ifInOctets.2 = Counter32: 588646264
IF-MIB::ifInOctets.3 = Counter32: 729289812
IF-MIB::ifInOctets.4 = Counter32: 0
IF-MIB::ifInOctets.120 = 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.120 = 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.120 = Counter32: 0
IF-MIB::ifInDiscards.1 = Counter32: 0
IF-MIB::ifInDiscards.2 = Counter32: 186
IF-MIB::ifInDiscards.3 = Counter32: 14
IF-MIB::ifInDiscards.4 = Counter32: 0
IF-MIB::ifInDiscards.120 = 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.120 = 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.120 = Counter32: 0
IF-MIB::ifOutOctets.1 = Counter32: 88397
IF-MIB::ifOutOctets.2 = Counter32: 2036980
IF-MIB::ifOutOctets.3 = Counter32: 729277242
IF-MIB::ifOutOctets.4 = Counter32: 0
IF-MIB::ifOutOctets.120 = Counter32: 0
IF-MIB::ifOutUcastPkts.1 = Counter32: 842
IF-MIB::ifOutUcastPkts.2 = Counter32: 21915
IF-MIB::ifOutUcastPkts.3 = Counter32: 3430356
IF-MIB::ifOutUcastPkts.4 = Counter32: 0
IF-MIB::ifOutUcastPkts.120 = 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.120 = 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.120 = 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.120 = 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.120 = 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.120 = OID: SNMPv2-SMI::zeroDotZero

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 system vrf A
set service snmp user USER2TEST

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 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: Set the following configuration 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
       1                       lo softwareLoopback 65536 10000000                              up
       2 Red Hat, Inc Device 0001   ethernetCsmacd  1500        0 de:ad:be:ef:6c:10            up
       3 Red Hat, Inc Device 0001   ethernetCsmacd  1500        0 de:ad:be:ef:6c:11          down
       4                  ip_vti0           tunnel  1480        0                            down
     121                        A   ethernetCsmacd 65575        0 ae:e4:51:4e:4f:4e            up

SNMP table IF-MIB::ifTable, part 2

 ifOperStatus ifLastChange ifInOctets ifInUcastPkts ifInNUcastPkts ifInDiscards ifInErrors
           up 0:0:00:00.00      88397             0              0            0          0
           up 0:0:00:00.00  588649305             0              0          186          0
         down 0:0:00:00.00  729289812             0              0           14          0
         down 0:0:00:00.00          0             0              0            0          0
           up 0:0:00:00.00        720             0              0            0          0

SNMP table IF-MIB::ifTable, part 3

 ifInUnknownProtos ifOutOctets ifOutUcastPkts ifOutNUcastPkts ifOutDiscards ifOutErrors ifOutQLen
                 0       88397            842               0             0           0         0
                 0     2042559          21942               0             0           0         0
                 0   729277242        3430356               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