We recently switched to SNMPV3 and experience the issue, that there is no client data available within prime anymore. So we quickly read about the SNMP context we need to add to our devices configuration in order for prime to get the correct data back. This works well for IOS. But we didnt have any luck with IOS-XE so far. This is the configuration that works on our 2960X models:
snmp-server group COMPANY v3 priv context vlan- match prefix read COMPANY
When we issue the show snmp group and context, we get:
switch#show snmp group
groupname: COMPANY security model:v3 priv
contextname: <no context specified> storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan- storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
switch#show snmp context
vlan-1
vlan-10
vlan-11
vlan-20
So if we check the configuration for IOS-XE, it looks the same, but it does simply not work. There are no clients that are connected to any IOS-XE devices visible in prime. We have different model switches like: Cisco Catalyst 3850 and 9200. We tried it with an context per Vlan, but this did not help as well:
snmp-server group COMPANY v3 priv context vlan-1 read COMPANY
snmp-server group COMPANY v3 priv context vlan-10 read COMPANY
snmp-server group COMPANY v3 priv context vlan-11 read COMPANY
snmp-server group COMPANY v3 priv context vlan-20 read COMPANY
switch#show snmp group
groupname: COMPANY security model:v3 priv
contextname: <no context specified> storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan-1 storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan-10 storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan-11 storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan-20 storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
switch#show snmp context
vlan-1
vlan-10
vlan-11
vlan-20
I tried to use the default readview, as i have seen some configuration use v1default:
snmp-server group COMPANY v3 priv read COMPANY
snmp-server group COMPANY v3 priv context vlan- match prefix
switch#show snmp group
groupname: COMPANY security model:v3 priv
contextname: <no context specified> storage-type: nonvolatile
readview : COMPANY writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
groupname: COMPANY security model:v3 priv
contextname: vlan- storage-type: nonvolatile
readview : v1default writeview: <no writeview specified>
notifyview: <no notifyview specified>
row status: active
Nothing helped so far. I couldnt find anyone with the same issue online, so thats why I put this in here. If someone could give the correct string (OID) that prime uses I could probably test this with an SNMP client to see if the response is different between the two operating systems.
