SUP-720-3B and 256k routes

What happens when there is more then 256k routes, is routing then done in software or prefixes that exceed this number are not routed?

Thanks

Reply to
Petag
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Once you hit the CEF limit on the Sup7203B's you'll have real problems and will start shunting traffic to the Sup cards. We've just upgraded to 3BXL's to get around this issue. We were dropping routes all over the place and many users just couldn't get to certain web sites, VPN's stopped working etc... It wasn't the best week that I've had ;-)

Chris.

Reply to
Chris

What other hardware has this issue?

Steve

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Reply to
Steve

Not sure. We were running Sup7202B's on 7613 routers. They have a maximum CEF limit of 224K IPv4 routes which just wasn't enough. The 3BXL's do up to

1024K IPv4 which should be enough for a little while longer.

Chris.

Reply to
Chris

I've seen what happens when you exceed this on non-Sup based routers (28/3800 series). It ain't pretty, and usually just crashes the router due to insufficient RAM.

Brian

Reply to
response3

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