[f-nsp] CER FIB capacity

[Dan White]

That's how we have our XMR currently configured:

show default values | include System|ip.*route
System Parameters    Default    Maximum    Current    Actual     Bootup
Revertible
ip-route               204800     1048576    786432     786432     786432
Yes       
ipv6-route             65536      245760     65536      65536      65536
Yes       
ip-vrf-route           5120       262144     5120       5120       5120
Yes       
ipv6-vrf-route         128        16384      128        128        128
Yes       

show run | include cam|system-max      
system-max ip-cache 786432
system-max ip-route 786432
system-max virtual-interface 4095
cam-partition profile multi-service-4

I do not know what headroom, if any, we have left to increase those
values individually.

On 10/03/12 20:11 +0100, Darren O'Connor wrote:
>Greg.
>
>Out of interest, what will my XMR hold for both? I've been told 1 million IPv4. so if I wanted to split this into IPv4 and IPv6 does that give me 750K IPv4 and 62.5K IPv6?
>
>Thanks
>
>> Date: Wed, 3 Oct 2012 12:50:23 -0400
>> From: ghankins at mindspring.com
>> To: foundry-nsp at puck.nether.net
>> Subject: Re: [f-nsp] CER FIB capacity
>>
>> Hi Rob, the CER routers use SRAM for the IPv4/v6 FIB instead of CAM, so
>> for the CES/CER/CER-RT platforms the scalability is dynamic for all IP
>> routes in the FIB (vs the MLX CAM architecture where we have to choose
>> fixed partition sizes which can support a maximum number).
>>
>> Scalability depends on how the memory is used by IPv4 and IPv6 routes.
>> There is no easy formula to calculate the utilization, so we have tested
>> certain combinations which are officially supported maximums.  While a
>> different number of routes might work, it will not be a supported or
>> tested combination.
>>
>> For CER:
>> 256K IPv4 routes + 128K IPv6
>> 448K IPv4 + 64K IPv6
>> 512K IPv4 + 0 IPv6
>>
>> For CER-RT:
>> 1.5M IPv4 + 512K IPv6
>>
>> "Internet route mix" is used to indicate that we are using a mix of prefix
>> lengths.  No compression is being used.
>>
>> Greg
>> (works for Brocade)
>>
>> --
>> Greg Hankins <ghankins at mindspring.com>
>>
>> -----Original Message-----
>> Date: Wed, 3 Oct 2012 16:54:45 +0200
>> From: Robert Hass <robhass at gmail.com>
>> To: foundry-nsp at puck.nether.net
>> Subject: [f-nsp] CER FIB capacity
>>
>> Hi
>> I know that CER (non-RT version) have FIB for 512K IPv4 / 128K IPv6.
>> My question is CAM is split between IPv4 and IPv6 - I mean if I have
>> 128K IPv6 routes in FIB then I cannot have 512K IPv4 routes at same
>> time.

-- 
Dan White