full BGP on a 2821 - any concern?

[ja1064]

i'm adding a 2nd ISP and will use BGP. i'm told this model can handle it. If so would 512M of memory be adequate or is more necessary?

[thisisshanky]

Currently the bgp prefixes are somewhere beteween 200k and 250k. According to this link approx, 100k prefixes occupy 70-80 MB of memory.

http://www.cisco.com/warp/public/459/41.shtml

Following a linear model, 2.5 times increase in number of prefixes should ask for 200MB of memory just for storing prefixes.

I believe you should be fine with the 512 MB. 768 or 1gig will be plenty.

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