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.19 = INTEGER: 19
IF-MIB::ifIndex.20 = INTEGER: 20
IF-MIB::ifIndex.21 = INTEGER: 21
IF-MIB::ifIndex.251 = INTEGER: 251
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.19 = STRING: gre0
IF-MIB::ifDescr.20 = STRING: gretap0
IF-MIB::ifDescr.21 = STRING: erspan0
IF-MIB::ifDescr.251 = 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.19 = INTEGER: tunnel(131)
IF-MIB::ifType.20 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.21 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.251 = 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.19 = INTEGER: 1476
IF-MIB::ifMtu.20 = INTEGER: 1462
IF-MIB::ifMtu.21 = INTEGER: 1450
IF-MIB::ifMtu.251 = 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.19 = Gauge32: 0
IF-MIB::ifSpeed.20 = Gauge32: 0
IF-MIB::ifSpeed.21 = Gauge32: 0
IF-MIB::ifSpeed.251 = 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.19 = STRING:
IF-MIB::ifPhysAddress.20 = STRING:
IF-MIB::ifPhysAddress.21 = STRING:
IF-MIB::ifPhysAddress.251 = STRING: d6:f9:ee:f7:83:6d
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.19 = INTEGER: down(2)
IF-MIB::ifAdminStatus.20 = INTEGER: down(2)
IF-MIB::ifAdminStatus.21 = INTEGER: down(2)
IF-MIB::ifAdminStatus.251 = 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.19 = INTEGER: down(2)
IF-MIB::ifOperStatus.20 = INTEGER: down(2)
IF-MIB::ifOperStatus.21 = INTEGER: down(2)
IF-MIB::ifOperStatus.251 = 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.19 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.20 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.21 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.251 = Timeticks: (0) 0:00:00.00
IF-MIB::ifInOctets.1 = Counter32: 216197
IF-MIB::ifInOctets.2 = Counter32: 750399268
IF-MIB::ifInOctets.3 = Counter32: 3322131430
IF-MIB::ifInOctets.4 = Counter32: 0
IF-MIB::ifInOctets.19 = Counter32: 0
IF-MIB::ifInOctets.20 = Counter32: 0
IF-MIB::ifInOctets.21 = Counter32: 0
IF-MIB::ifInOctets.251 = 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.19 = Counter32: 0
IF-MIB::ifInUcastPkts.20 = Counter32: 0
IF-MIB::ifInUcastPkts.21 = Counter32: 0
IF-MIB::ifInUcastPkts.251 = 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.19 = Counter32: 0
IF-MIB::ifInNUcastPkts.20 = Counter32: 0
IF-MIB::ifInNUcastPkts.21 = Counter32: 0
IF-MIB::ifInNUcastPkts.251 = Counter32: 0
IF-MIB::ifInDiscards.1 = Counter32: 0
IF-MIB::ifInDiscards.2 = Counter32: 171
IF-MIB::ifInDiscards.3 = Counter32: 13
IF-MIB::ifInDiscards.4 = Counter32: 0
IF-MIB::ifInDiscards.19 = Counter32: 0
IF-MIB::ifInDiscards.20 = Counter32: 0
IF-MIB::ifInDiscards.21 = Counter32: 0
IF-MIB::ifInDiscards.251 = 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.19 = Counter32: 0
IF-MIB::ifInErrors.20 = Counter32: 0
IF-MIB::ifInErrors.21 = Counter32: 0
IF-MIB::ifInErrors.251 = 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.19 = Counter32: 0
IF-MIB::ifInUnknownProtos.20 = Counter32: 0
IF-MIB::ifInUnknownProtos.21 = Counter32: 0
IF-MIB::ifInUnknownProtos.251 = Counter32: 0
IF-MIB::ifOutOctets.1 = Counter32: 216197
IF-MIB::ifOutOctets.2 = Counter32: 2258610
IF-MIB::ifOutOctets.3 = Counter32: 3322159846
IF-MIB::ifOutOctets.4 = Counter32: 0
IF-MIB::ifOutOctets.19 = Counter32: 0
IF-MIB::ifOutOctets.20 = Counter32: 0
IF-MIB::ifOutOctets.21 = Counter32: 0
IF-MIB::ifOutOctets.251 = Counter32: 0
IF-MIB::ifOutUcastPkts.1 = Counter32: 1266
IF-MIB::ifOutUcastPkts.2 = Counter32: 23441
IF-MIB::ifOutUcastPkts.3 = Counter32: 5854187
IF-MIB::ifOutUcastPkts.4 = Counter32: 0
IF-MIB::ifOutUcastPkts.19 = Counter32: 0
IF-MIB::ifOutUcastPkts.20 = Counter32: 0
IF-MIB::ifOutUcastPkts.21 = Counter32: 0
IF-MIB::ifOutUcastPkts.251 = 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.19 = Counter32: 0
IF-MIB::ifOutNUcastPkts.20 = Counter32: 0
IF-MIB::ifOutNUcastPkts.21 = Counter32: 0
IF-MIB::ifOutNUcastPkts.251 = 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.19 = Counter32: 0
IF-MIB::ifOutDiscards.20 = Counter32: 0
IF-MIB::ifOutDiscards.21 = Counter32: 0
IF-MIB::ifOutDiscards.251 = 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.19 = Counter32: 0
IF-MIB::ifOutErrors.20 = Counter32: 0
IF-MIB::ifOutErrors.21 = Counter32: 0
IF-MIB::ifOutErrors.251 = 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.19 = Gauge32: 0
IF-MIB::ifOutQLen.20 = Gauge32: 0
IF-MIB::ifOutQLen.21 = Gauge32: 0
IF-MIB::ifOutQLen.251 = 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.19 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.20 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.21 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.251 = 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
      19    gre0           tunnel  1476        0                           down         down
      20 gretap0   ethernetCsmacd  1462        0                           down         down
      21 erspan0   ethernetCsmacd  1450        0                           down         down
     252       A   ethernetCsmacd 65575        0 c6:3:a1:67:2c:35            up           up

SNMP table IF-MIB::ifTable, part 2

 ifLastChange ifInOctets ifInUcastPkts ifInNUcastPkts ifInDiscards ifInErrors ifInUnknownProtos
 0:0:00:00.00     216805             0              0            0          0                 0
 0:0:00:00.00  750403303             0              0          171          0                 0
 0:0:00:00.00 3322131430             0              0           13          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
      216805           1274               0             0           0         0
     2266140          23474               0             0           0         0
  3322159846        5854187               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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