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define two snmp-server community strings for your vrfs
Add your nexus to NPM twice with different IPs for the two communities then add them to UDT
I check the manual but couldnt find a way to define two snmp-server community strings for my vrfs
Below is the respond from SolarWinds support
There is a known bug in the Cisco Nexus code that does not respond to some of the MIBs that UDT polls. Are your Nexus devices using FEX?
The two OIDs we poll IP Address information from are:
You can use the UDT Compatibility Checker against these devices to see if they return any Layer 3 data. This application can be found under the installation path, for example, C:\Program Files (x86)\SolarWinds\Orion\UDT.
And here what Cisco has to say about Solarwinds' respond
I checked the supported device MIB list and it does show this MIB as included.
It should inherit all the previous MIBS to newer codes of NXOS.
So basically I'm hanging
It works for me .. use the engineers toolset SNMP MIB browser to get that table
it will give you the ARP table for the VRF for which you specify the snmp community string in the query
configure your nexus snmp sever:
1- create the snmp context and map it to the second VRF :
snmp-server context (context name) vrf (second vrf name)
2- define the second community:
snmp-server community second_community_string
3- set the mib parameters for the second context
snmp-server mib community-map (second_community_string) context (second vrf name)
"snmp-server mib community-map (second_community_string) context (second vrf name)" --> this command comes from a SNMP pro
It works. Thank you
Well I just found another problem with this solution: You can only assign 2 IP addresses to a switch ==> Only works with 2 VRF or less
Solarwinds does need to have a Cisco Nexus knowledge to change their software to make this right.
Just to share with you I got replied from Cisco TAC as well:
Snmpwalk by default queries Default-vrf only. If you want to query entries for a particular vrf, snmp-context has to be mapped to that vrf.
- e.g. To get the mgmt0 entries (vrf management), following needs to be configured on the N7k switch:
snmp-server community public1 ro
snmp-server context management vrf management
snmp-server mib community-map public1 context management
Did you ever find a solution for this? I'm about to begin evaluating UDT but we have 8 VRFs so I don't want to waste my time if it isn't going to work.
No changes to the product have been made as of yet to take this new information in to light. It's something we are tracking but unfortunately will not be part of the release we are currently working on.