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.33 = INTEGER: 33
IF-MIB::ifIndex.34 = INTEGER: 34
IF-MIB::ifIndex.35 = INTEGER: 35
IF-MIB::ifIndex.125 = INTEGER: 125
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.33 = STRING: gre0
IF-MIB::ifDescr.34 = STRING: gretap0
IF-MIB::ifDescr.35 = STRING: erspan0
IF-MIB::ifDescr.125 = 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.33 = INTEGER: tunnel(131)
IF-MIB::ifType.34 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.35 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifType.125 = 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.33 = INTEGER: 1476
IF-MIB::ifMtu.34 = INTEGER: 1462
IF-MIB::ifMtu.35 = INTEGER: 1450
IF-MIB::ifMtu.125 = 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.33 = Gauge32: 0
IF-MIB::ifSpeed.34 = Gauge32: 0
IF-MIB::ifSpeed.35 = Gauge32: 0
IF-MIB::ifSpeed.125 = 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.33 = STRING:
IF-MIB::ifPhysAddress.34 = STRING:
IF-MIB::ifPhysAddress.35 = STRING:
IF-MIB::ifPhysAddress.125 = STRING: c2:e3:24:59:34:10
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.33 = INTEGER: down(2)
IF-MIB::ifAdminStatus.34 = INTEGER: down(2)
IF-MIB::ifAdminStatus.35 = INTEGER: down(2)
IF-MIB::ifAdminStatus.125 = 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.33 = INTEGER: down(2)
IF-MIB::ifOperStatus.34 = INTEGER: down(2)
IF-MIB::ifOperStatus.35 = INTEGER: down(2)
IF-MIB::ifOperStatus.125 = 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.33 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.34 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.35 = Timeticks: (0) 0:00:00.00
IF-MIB::ifLastChange.125 = Timeticks: (0) 0:00:00.00
IF-MIB::ifInOctets.1 = Counter32: 390141
IF-MIB::ifInOctets.2 = Counter32: 977644342
IF-MIB::ifInOctets.3 = Counter32: 2424952639
IF-MIB::ifInOctets.4 = Counter32: 0
IF-MIB::ifInOctets.33 = Counter32: 0
IF-MIB::ifInOctets.34 = Counter32: 0
IF-MIB::ifInOctets.35 = Counter32: 0
IF-MIB::ifInOctets.125 = 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.33 = Counter32: 0
IF-MIB::ifInUcastPkts.34 = Counter32: 0
IF-MIB::ifInUcastPkts.35 = Counter32: 0
IF-MIB::ifInUcastPkts.125 = 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.33 = Counter32: 0
IF-MIB::ifInNUcastPkts.34 = Counter32: 0
IF-MIB::ifInNUcastPkts.35 = Counter32: 0
IF-MIB::ifInNUcastPkts.125 = Counter32: 0
IF-MIB::ifInDiscards.1 = Counter32: 0
IF-MIB::ifInDiscards.2 = Counter32: 154
IF-MIB::ifInDiscards.3 = Counter32: 0
IF-MIB::ifInDiscards.4 = Counter32: 0
IF-MIB::ifInDiscards.33 = Counter32: 0
IF-MIB::ifInDiscards.34 = Counter32: 0
IF-MIB::ifInDiscards.35 = Counter32: 0
IF-MIB::ifInDiscards.125 = 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.33 = Counter32: 0
IF-MIB::ifInErrors.34 = Counter32: 0
IF-MIB::ifInErrors.35 = Counter32: 0
IF-MIB::ifInErrors.125 = 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.33 = Counter32: 0
IF-MIB::ifInUnknownProtos.34 = Counter32: 0
IF-MIB::ifInUnknownProtos.35 = Counter32: 0
IF-MIB::ifInUnknownProtos.125 = Counter32: 0
IF-MIB::ifOutOctets.1 = Counter32: 390141
IF-MIB::ifOutOctets.2 = Counter32: 374132343
IF-MIB::ifOutOctets.3 = Counter32: 147435397
IF-MIB::ifOutOctets.4 = Counter32: 0
IF-MIB::ifOutOctets.33 = Counter32: 0
IF-MIB::ifOutOctets.34 = Counter32: 0
IF-MIB::ifOutOctets.35 = Counter32: 0
IF-MIB::ifOutOctets.125 = Counter32: 0
IF-MIB::ifOutUcastPkts.1 = Counter32: 3588
IF-MIB::ifOutUcastPkts.2 = Counter32: 4056459
IF-MIB::ifOutUcastPkts.3 = Counter32: 369893
IF-MIB::ifOutUcastPkts.4 = Counter32: 0
IF-MIB::ifOutUcastPkts.33 = Counter32: 0
IF-MIB::ifOutUcastPkts.34 = Counter32: 0
IF-MIB::ifOutUcastPkts.35 = Counter32: 0
IF-MIB::ifOutUcastPkts.125 = 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.33 = Counter32: 0
IF-MIB::ifOutNUcastPkts.34 = Counter32: 0
IF-MIB::ifOutNUcastPkts.35 = Counter32: 0
IF-MIB::ifOutNUcastPkts.125 = 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.33 = Counter32: 0
IF-MIB::ifOutDiscards.34 = Counter32: 0
IF-MIB::ifOutDiscards.35 = Counter32: 0
IF-MIB::ifOutDiscards.125 = 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.33 = Counter32: 0
IF-MIB::ifOutErrors.34 = Counter32: 0
IF-MIB::ifOutErrors.35 = Counter32: 0
IF-MIB::ifOutErrors.125 = 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.33 = Gauge32: 0
IF-MIB::ifOutQLen.34 = Gauge32: 0
IF-MIB::ifOutQLen.35 = Gauge32: 0
IF-MIB::ifOutQLen.125 = 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.33 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.34 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.35 = OID: SNMPv2-SMI::zeroDotZero
IF-MIB::ifSpecific.125 = 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 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
      33    gre0           tunnel  1476        0                            down         down
      34 gretap0   ethernetCsmacd  1462        0                            down         down
      35 erspan0   ethernetCsmacd  1450        0                            down         down
     126       A   ethernetCsmacd 65575        0 46:18:f6:f8:1e:fd            up           up

SNMP table IF-MIB::ifTable, part 2

 ifLastChange ifInOctets ifInUcastPkts ifInNUcastPkts ifInDiscards ifInErrors ifInUnknownProtos
 0:0:00:00.00     390445             0              0            0          0                 0
 0:0:00:00.00  977648373             0              0          154          0                 0
 0:0:00:00.00 2424952639             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
      390445           3592               0             0           0         0
   374139852        4056492               0             0           0         0
   147435397         369893               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

---