Administrator Guide

Example of Deriving the Interface Index Number
If you know the interface index, use the following commands to find the interface number.
DellEMC ~ $ snmpwalk -v 2c -c public 10.16.206.127 .1.3.6.1.2.1.2.2.1.2 | grep 2097156
IF-MIB::ifDescr.2097156 = STRING: TenGigabitEthernet 1/1
DellEMC ~ $ snmpwalk -v 2c -c public 10.16.206.127 .1.3.6.1.2.1.31.1.1.1.1 | grep 2097156
IF-MIB::ifName.2097156 = STRING: TenGigabitEthernet 1/1
You can use the show interfaces command to view the interface index.
DellEMC#show interfaces gigabitethernet 1/21
GigabitEthernet 1/21 is down, line protocol is down
Hardware is DellEMCEth, address is f8:b1:56:82:de:70
Current address is f8:b1:56:82:de:70
Pluggable media not present
Interface index is 2097156
MIB Objects for Viewing the System Image on Flash Partitions
To view the system image on Flash Partition A, use the chSysSwInPartitionAImgVers object or, to view the system image on
Flash Partition B, use the chSysSwInPartitionBImgVers object.
Table 112. MIB Objects for Viewing the System Image on Flash Partitions
MIB Object OID Description MIB
chSysSwInPartitionAImgVers 1.3.6.1.4.1.6027.3.10.1.2.8.1.11 List the version string of the
system image in Flash
Partition A.
Chassis MIB
chSysSwInPartitionBImgVers 1.3.6.1.4.1.6027.3.10.1.2.8.1.12 List the version string of the
system image in Flash
Partition B.
Chassis MIB
Monitoring BGP sessions via SNMP
This section covers the monitoring of BGP sessions using SNMP.
BGP SNMP support for non-default VRF uses a SNMP context to distinguish multiple BGP VRF instances within a single BGP
process. SNMP context is a repository of management information that can be accessed through the SNMP agent. SNMP
supports multiple contexts in a device. SNMPv3 has a context name field in its PDU, which automatically allows the context
name field to be mapped to a particular VRF instance without having to be mapped to a community map. SNMPv2c context has
to be mapped to a community map. A new CLI command, snmp context, under BGP context, has been introduced to perform
this function.
To map the context to a VRF instance for SNMPv2c, follow these steps:
1. Create a community and map a VRF to it. Create a context and map the context and community, to a community map.
● sho run snmp
● snmp-server community public ro
● snmp-server community public ro
● snmp-server community vrf1 ro
● snmp-server community vrf2 ro
● snmp-server context context1
● snmp-server context context2
● snmp mib community-map vrf1 context context1
● snmp mib community-map vrf1 context context2
2. Configure snmp context under the VRF instances.
● sho run bgp
Simple Network Management Protocol (SNMP)
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