[f-nsp] CER FIB capacity

[Greg]

http://www.brocade.com/downloads/documents/html_product_manuals/NI_05400a_CFG/CAM_part.82.2.html


2012/10/3 Darren O'Connor <darrenoc at outlook.com>

> 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.
> >
> > Rob
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