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Number of VRFs

Hi,

I would like to know the number of VRFs supported on 7300 and 7400 routers. I have heard it is 100 in 7400 series routers.

Thanks,

Prakash

2 REPLIES
Cisco Employee

Re: Number of VRFs

There is no hard limit on the number of VRF these two devices can handle. Rather, the limit on the # of VRF is determined by many factors such as # of routes per VRF, routing protocol used b/w PE-CE, amount of memory installed on the PE. I had once had a document describing the exact details but can't find it anymore.

I will let you know if I can put my hand on it.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
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Ciudad de México, 06600
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Bronze

Re: Number of VRFs

Hi

I found the presentation you probably were telling about. It is a presentation from the networkers.

It says the following:

~ 60 - 70 K per VRF

(32K for base VRF control block, other memory such

as CEF, TFIB overhead, IDB's and so on(

~ 800-900 Bytes per Route

(Includes CEF, TFIP, and RIB memors in BGP)

But basically it is dependent on many things as you mentionded.

Hope that helps you.

Roger

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