nanog mailing list archives

Re: TCP session disconnection caused by Code Red?


From: "Stephen J. Wilcox" <steve () opaltelecom co uk>
Date: Mon, 6 Aug 2001 21:56:25 +0100 (BST)


On Mon, 6 Aug 2001, mike harrison wrote:


Hmmm, a 7206 should surely be able to handle more than 600 packets per second
or am I wrong here? Our upstream E3 is currently used a maximum of 15Mbps and

It's not the packets per second that seems to kill them, its
the amount of arp cache and sessions (figure 600 packets per second, 
each packet to a different host...Thats a lot of sessions in 5 minutes)

Curious, in that case consider null routing unused blocks, perhaps take
the opportunity to improve on subnet and vlan distribution to help the
null routing.

Steve


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