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New Member

Multihome BGP question

Hello, everyone:

Would you please look at my BGP design and tell me if there is any defect? I am going to deploy it this weekend.

If I receive full route instead of default+partial routes from both ISP, can the routers handle it? I have no policy for ibgp, so they will exchange full bgp table.

CE-A: 2G RAM, cisco7606-S

CE-B: 1GRAM, cisco7606

CE-C: 1G RAM, Cisco6506-E

Really really appreciate your time and suggestion.

Thanks a lot!!!!

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Accepted Solutions
Hall of Fame Super Bronze

Multihome BGP question

Hall of Fame Super Bronze

Multihome BGP question

New Member

Multihome BGP question

I checked and we have proper hardware. Here is my question:

If one full BGP table requests 512M RAM and if the router has 3 bgp session(either ebgp or ibgp) to exchange ful BGP table, will the route need 3X512M RAM in order to handle 3 bgp sessions?

Anyone can check if the policy looks fine or not?

Highly appreciate your suggetions!

Hall of Fame Super Bronze

Multihome BGP question

You are using hardware assisted platforms and routes are not stored in RAM, they are stored in ASICs.

The tables I provided will give you the limitations for each one of them.

The number should be used against the numbers of routes installed in RIB, not the number of BGP prefixes.

For instance, you can have 3 BGP prefixes in the BGP table but only one is installed in the RIB.