Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

VRF

I want to create 15 subinterfaces in F0/0 and 15 subinterfaces in F0/1 and add each pair to a VFP.

EX:

F0/0.1 and F0/1.1 -> VRF1

F0/0.2 and F0/1.2 -> VRF2

.

.

F0/0.15 and F0/1.15 -> VRF15

Is it possible? What router support 15 VRFs?

  • LAN Switching and Routing
1 ACCEPTED SOLUTION

Accepted Solutions
Bronze

Re: VRF

I just tried this on my Cisco 2600 and I stopped trying after I created 35 VRF's and added 35 subinterfaces, each belonging to 1 vrf.

I did get a warning message after the 15th vrf was created telling me that smartinit had been disabled and the system thinks thats a bad idea. I believe your only limited by memory at this point so if your low on memory, you won't be able to keep configuring vrf's but if you have a lot of free memory, you can configure a bunch.

Of course, I found Cisco's recommended numbers on this doc:

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6557/prod_white_paper0900aecd8051fbdc.html

About 3/4 down the page is the "PERFORMANCE AND SCALABILITY" section. They only recommend 5 vrf's on a 2600XM.

Although it may be possible to configure 100 vrf's on the box and have everything working, you may run into a problem if you have to call TAC for support.

GL

-Rob

2 REPLIES
Hall of Fame Super Silver

Re: VRF

Hello Andre,

15 VRFs are not a scalability issue you can use whatever router supports MPLS VPN.

I would try to understand if you want to have a real PE with MPLS forwarding capabilities or a device MultiVRF CE with a subset of features.

as a multiVRF CE you can also use a multilayer switch starting from c3550 with enterprise image

as PE router you can use different platforms depending on the aggregate traffic volume you want to support/expect for your VRFs.

Again you can use a multilayer switch like C6500 with SUP720 BXL or simply an ISR router like C2811 you want to build a lab or demo.

Hope to help

Giuseppe

Bronze

Re: VRF

I just tried this on my Cisco 2600 and I stopped trying after I created 35 VRF's and added 35 subinterfaces, each belonging to 1 vrf.

I did get a warning message after the 15th vrf was created telling me that smartinit had been disabled and the system thinks thats a bad idea. I believe your only limited by memory at this point so if your low on memory, you won't be able to keep configuring vrf's but if you have a lot of free memory, you can configure a bunch.

Of course, I found Cisco's recommended numbers on this doc:

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6557/prod_white_paper0900aecd8051fbdc.html

About 3/4 down the page is the "PERFORMANCE AND SCALABILITY" section. They only recommend 5 vrf's on a 2600XM.

Although it may be possible to configure 100 vrf's on the box and have everything working, you may run into a problem if you have to call TAC for support.

GL

-Rob

271
Views
10
Helpful
2
Replies
This widget could not be displayed.