nanog mailing list archives
Re: L2 Broadcast/multicast limits on ethernet ports
From: Arien Vijn <arien+nanog () ams-ix net>
Date: Mon, 20 Sep 2004 22:45:31 +0200
On Sep 20, 2004, at 9:32 PM, KASHIF SALAMM wrote:
Thanx Arien Yes that's the command we will be doing.The basic purpose is to stop the cpu's to shoot up to 70 + % utilistaion and to crash/reboot as we experienced the same.What numbers you are using for 10/100/1000 ports.
We use it global for all ports. #sh run | i limit broadcast limit 500 multicast limit 10000 unknown-unicast limit 1000The numbers are based on tests we did on the IronCore hardware. We too wanted to limit CPU utilisation. Connected switches remained usable while the address learning rate was not affected.
But again it are egress limits. Multicast, broadcast and unknown unicast frames hit the CPU before they are dropped or forwarded.
Kind regards, Arien
Current thread:
- L2 Broadcast/multicast limits on ethernet ports KASHIF SALAMM (Sep 20)
- Re: L2 Broadcast/multicast limits on ethernet ports Arien Vijn (Sep 20)
- <Possible follow-ups>
- Re: L2 Broadcast/multicast limits on ethernet ports KASHIF SALAMM (Sep 20)
- Re: L2 Broadcast/multicast limits on ethernet ports Arien Vijn (Sep 20)