[c-nsp] Public table on 7206 VXR with NPE-G1 - 512MB or 1GB?

Engelhard Labiro engel.labiro at gmail.com
Wed Jan 21 20:12:13 EST 2009


Hi Mick,

FYI a 7206VXR-NPE-G1 loaded with 1Gig only consumes around 250Mb of
its memory for a full BGP table (around 271K routes without
filtering). See our router stat here

xxxx#sh mem
                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor   63F362C0   923573340   256034056   667539284   651316116   369925212
      I/O    C000000    67108864     3721756    63387108    62399392    62399356
Transient   7B000000    16777216       11320    16765896    14820880    16759876
[....truncated...]

hope this gives you a clue if 512Mb will be able to handle full BGP table.

On Thu, Jan 22, 2009 at 8:59 AM, The Mickster <mickster4470 at gmail.com> wrote:
> We need to shift some routers around in our network, and we have a couple of
> 7206-VXR routers with NPE-G1 which we'd like to redeploy into a situation
> where they'll need to take the full public BGP table.
>
> Currently they have 512MB of RAM, and the NPE-G1 appears to top-out at 1GigB
> of RAM.  Can anyone tell me if I can do the full table on 512 MB, or if I
> need upgrade to !Gig, or is running the full table on a 7206-VXR a lost
> cause anyway?
>
> I'd run some tests, but it's going to be pain to get one of the 7206 to
> where we can use it for testing without shuffling a bunch of stuff around.
> I'd really like to know if it's going to function before going to all of
> that work, so I'm hoping someone on this list can offer me a clue...
>
> -Mick
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