BGP & memory req'd

[peter290457]

Hi

I have a question about BGP & memory requirements: A router is being sent a large number of routes (for example, all the Internet route) but has an input filter only allowing about 10 routes in.

Does the router require enough memory (& cpu) to handle all the routes being sent to it?

Thanks

Peter

[Georg Pauwen]

Hello Peter,

to handle a full BGP routing table, a minimum of 128MB of RAM is recommended. 10 routes should normaly not be a problem, although other attributes, such as the number of BGP peers, influence the memory utilization as well.

Check this document, it discusses the BGP memory utilization issue:

Achieve Optimal Routing and Reduce BGP Memory Consumption

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094a83.shtml

HTH,

GP