>> We just discovered a very weird problem, we're not sure what to >> attribute it to. We run a port-channel between a cisco (6509E, >> WS-X6548-GE-TX) and a Huawei NE40E. Port channel consists of 2 copper >> links and runs at about 1.2G. We've noticed huge number of input queue >> drops and overruns:
> Entirely expected (we've seen similar). The 6548 is overbooked 8:1, each > ASIC handling 8 ports with 1 Gig towards the backplane bus. 2/5 and 2/8 > are on the same ASIC and drops are expected if you run above 1 Gbps. You > may have better luck if you spread the channels on two different ASICs. > For high bandwidth applications a card with small or no overbooking is > better (e.g. the 6724 / 6748 family). You should look at this URL: http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note 09186a00801751d7.shtml#ASIC as it has all the information about this problem and other etherchannel-related restrictions using this card. Best regards, Stig Meireles Johansen _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
