Looking for some tribal knowledge from this group -- we have a Cisco 7609-S running IOS 15.2(4)S5 with RSP720C's and DFC3C's on all our line cards. We have two WS-X6704-10GE cards that move around 7 Gbps (that's a total of in and out) at peak times between their 7 active interfaces. Some of those Gbps are mirrored traffic.
What our customers are seeing and what we have confirmed is 2 to 3% ICMP packet loss for traffic in a certain VLAN that flow in/out of the 10G cross-card port channel facing a Brocade ICX6610 stack. This is packet loss pinging *through* the router, not ICMP traffic terminating hitting the router. e.g. server--1G---Cisco7609==10G==VLAN A==Brocade---CPE (packet loss) server--1G---Cisco7609==10G==VLAN B==Brocade---CMTS (no packet loss) server--1G---Cisco7609==1G===VLAN A==access-gear---CPE (no packet loss) laptop==access gear==10G==VLAN A==Brocade---CPE (no packet loss) laptop==access gear---CPE (no packet loss) That VLAN has about 4500 to 5500 active MAC addresses. We can ping an IP address in that certain VLANs that flow in/out some other 1G port-channel on a WS-X6748-GE-TX and there is no packet loss. Some of other VLANs I've tested that flow in/out of the 10G cross-card port channel also don't have packet loss. So what would cause (what appears to be) a certain VLAN to drop some traffic when flowing across a 10G port-channel and not a 1G port-channel? I know the 6704 has some performance limitations -- how do I measure that on the box? Regards, Frank Bulk _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
