Hi John We had the same issue a few years ago on a Cisco 7204VXR with the NPE-G1 processor. I believe we were told, that we had hit the max capacity of the router.
______________________________________ Med venlig hilsen / Kind regards Lars Lystrup Christensen Director of Engineering, CCIE(tm) #20292 Danske Telecom A/S Sundkrogsgade 13, 4 2100 København Ø -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of john douglas Sent: 11. februar 2009 14:36 To: [email protected] Subject: [c-nsp] 7301 NPE-G1 gigabit overruns Hi All, I am hoping someone may have some guidance. We have some 7301 NPE-G1 running 12.2(33)SRC3 connected to Catalyst 3560 switch, dot1q trunking with a few Vlans. I find on the 7301 router whenever I try to drive a given gigabit sub interface beyond about 200mbps I begin to see Input Errors (Overruns) incrementing on the physical interface and begin exhibiting packet loss. Under the show controller information I see rx_overrun and rx_int_drop incrementing - all other Rx error values under "Statistics" section are zero. On the switch I see pause input incrementing, but no errors. Cpu is 40%. I have read other postings about this being attributed to microburst of traffic but I am still a little unclear I am trying to work out 1) Does the G1 correctly support pause frames? 2) Are there any knobs we can tweak - or we simply hitting the limits of the silicon? The short term solution has been to spread the vlan sub interfaces over the 3 gig interfaces however this leaves me in a situation where I cannot really use EEM to migrate sub interface config from one gigabit interface to another should there be a failure, as the target interface will being exhibiting overruns and loss. Any advice appreciated, Kind regards, John _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
