[c-nsp] number of VRFs on Cisco Cat/7600

Adam Armstrong lists at memetic.org
Fri Apr 24 17:39:51 EDT 2009


I have heard it said that more than 512 VRFs is crazy. more than 1024 
*INSANE*.



adam.
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> Sup720's support a Max of 1024 VRF's.  See the datasheet:
>
> http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/product_data_sheet09186a0080159856.html 
>
>
> David
>
> On Apr 23, 2009, at 10:20 AM, Adam Armstrong wrote:
>
>> Marlon Duksa wrote:
>>> I found this in Cisco documentation under the title "OSPF Support for
>>> Unlimited Software VRFs per
>>> Provider Edge Router" :
>>>
>>> "The OSPF Support for Unlimited Software VRFs per Provider Edge Router
>>> feature allows for an
>>> approximate range of 300 to 10,000 VRFs, depending on the particular
>>> platform and on the applications,
>>> processes, and protocols that are currently running on the platform."
>>>
>>> 10,000 VRF?
>>>
>>> 7600/Cat have a limitation of 4K internal VLANs and each L3 VPN 
>>> (MPLS) takes
>>> one of those, up to 512 L3 VPNs. After 512 L3 VPNs it takes 2 internal
>>> VLANs.
>>>
>>> This would max out L3 VPNs on 7600/Cat to less than 3K. I assume 
>>> that L3 VPN
>>> = VRF.
>>>
>>> Does anyone know how they arrived to this 10K VRFs number? It just 
>>> does not
>>> make sense.
>> Unlimited *software* VRFs?
>>
>> adam.
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