On (2010-02-09 17:56 +0100), Andy B. wrote: > Excuse me for being ignorant, but what are glean punts? Should I dig > out my routing for dummies book :-/
No ignorance, sorry for being so terse, just wanted to avoid rambling on too much. Glean are packets which need to be punted because forwarding information is incomplete, in this case because it is locally connected destination without valid hardware (MAC) forwarding address. To resolve IP address, you'll ARP it, and this is software function, to be able to trigger ARP you'll need to punt the packet to software. As you have huge LAN, it is likely also very empty, so you might get sudden burst of packets spread around the LAN, which would suddenly punt many packets to software. If BGP/OSPF is running over same physical interface, incoming BGP/OSPF keepalive might be dropped, since there is no room to punt it (actually SPD should have some extra room for them) causing BGP keepalive to be dropped. When OSPF/BGP goes down, is it always one side tearing it down due due to hold-time expiring? If it is always the same and always the router under discussion this would support my hypothesis. -- ++ytti _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
