topic reading VRF IP-Interfaces via SNMP in ExtremeSwitching (VSP/Fabric Engine)

reading VRF IP-Interfaces via SNMP

PeterK — Mon, 21 Mar 2022 13:00:00 GMT

I'm looking for a SNMP-OID to read IP-Interface Information from a VRF.

IP-Interfaces from GRT is not a Problem, but I need Information from multiple additional VRFs.

currently I've VSP4900 runnig VOSS 8.5

I checked a lot "rapid city" related MIBs, but didn't find a subtree.

Does anyone have a solution?

RE: reading VRF IP-Interfaces via SNMP

Miguel-Angel_RO — Wed, 23 Mar 2022 17:50:00 GMT

Does this helps?

General VRF info
Name: rcVrfMib
Oid: 1.3.6.1.4.1.2272.1.203.1

Mapping IP-VLAN and VLAN-VRF
Name: rcIpAdEntVlanId
Oid: 1.3.6.1.4.1.2272.1.8.2.1.7
Name: rcVlanVrfId
Oid: 1.3.6.1.4.1.2272.1.3.2.1.48

Mig

RE: reading VRF IP-Interfaces via SNMP

PeterK — Thu, 24 Mar 2022 11:29:00 GMT

Hi Mig,

thanks for your answer.

rcIpAddrTable=1.3.6.1.4.1.2272.1.8.2 --> I see only entries from GRT (CLIP & VLAN-IP-Interface)
rcVlanEntry=1.3.6.1.4.1.2272.1.3.2.1 --> contains no IP Information (value DVR IP Addr is also empty, because I'm using DVR one-ip)

rcDvrInterfacesTable=1.3.6.1.4.1.2272.1.219.4 --> this is a little Workaround, for Client related IP Interfaces, but that also means, that CLIPs and NON-DVR IPs in a VRF is still not visible...

RE: reading VRF IP-Interfaces via SNMP

SamPirok — Fri, 25 Mar 2022 16:19:00 GMT

Hi Peter, this is a sample of how to query a diff vrf, does this help?

snmpwalk -v 2c -c communitystring::vrfcontextnumber ipaddress oid

RE: reading VRF IP-Interfaces via SNMP

PeterK — Mon, 28 Mar 2022 14:27:00 GMT

Hi Sam,

I don't know.

I tried version 3 with -n param, but this didn't help.

At the End I will create a flexview with this information.

Re: RE: reading VRF IP-Interfaces via SNMP

bu_jeff_wilson — Wed, 24 Jul 2024 15:59:57 GMT

I'm late to the party but I got here as fast as I could.

I reached out to GTAC with this same question. What I've learned is that the VRF IDs can be enumerated via SNMP using the MIB rcVrfNameVrfName (1.3.6.1.4.1.2272.1.203.1.1.5.1.2). Once you discover the active VRF IDs, you can pivot to query each VRF using the context, vrf<id>.

For example, to query VRF ID 1:

snmpwalk -On -v3 -u <username> -a SHA -A <authsecret> -l authpriv -x AES -X <privsectret> -n vrf1 <switchIP> 1.3.6