Cisco 1941 VRF-lite limit

[martin.lundvall]

Hello all,

How many VRFs can one configure on the Cisco 1941 router? I dont seem to find this answer anywhere and if I recall the limit on the 1800 is something like 30.

// Martin

[Raphael Wouters · Accepted solution]

Hi Martin,

I'm not aware of a limit for the number of VRF you can configure on the ISRG2. There are hardware limitation on hardware platform such as some switches that have a maximum amount of routing tables that can be programmed, but the 1941 is a software platform and IOS doesn't seem to have such a limit.

Maybe you are refering to the maximum number of routing process that can run on a router, which is 30, see "show ip protocols summary" you will have one for connected, one for static and then one per routing protocol up to a total of 32. It seems that this limit still exists on the ISRG2.

On a side note, you also have a limit of interfaces you can have on a router, each interfaces will consume an IDB and this number is limited but should be enough in most cases, see "show idb" I see a maximum of 1200 on the 1941. Those are the two limit I can see when talking about VRF.

Thanks,

Raphael

[aotholland]

Hi all,

Which IOS software supports VRF future on 1941 router platform?

Thanks.

[paolo bevilacqua]

The 1941 is an ISR G2 router based on Feature License, not IOS images.. You can use the feature navigator to see which features are in the respective licenses.

[aotholland]

Thanks a lot Paolo.