Cisco NSP,
The Basics: We've a customer with two separate 10gig links to a pair of our 6509-E's. Both of our 6509-E's have dual Sup720-3BXL and the 6704-10GE line cards. Link 1: 6509 Router#1 routed port to Netgear#1. IPv4 only. Multimode fiber Link 2: 6509 Router#2 routed port to Netgear#2. IPv4 only. Multimode fiber The two Netgears are in a virtual stack. The 6509s are not. Netgear model: GSM7352Sv2 Beginning several days ago both links began flapping every 5 and a half hours, both links have this happen within a couple of minutes of each other. They will flap for several minutes and then return to normal operation requiring no user action and the ports never enter err-disable or show any other symptoms. Our Ciscos log between 5 and 10 interface drops in the time frame. The Netgear switches log hundreds of interface drops in the same time frame. Further Details: We've replaced the transceivers on all endpoints. Light power levels are great at all end points. All other 10gig ports on the Ciscos are operating without issue, though they are all using single mode/LR optics. No other related log entries or other observed/reported issues anywhere else. On the Cisco's there are a some old interface errors but the error counters have not increased over the past several days. On the Netgears there are a few thousand FCS errors during the the few minutes of the problem occurring otherwise no errors ever. Sup720's are not failing over Beyond the very basic things the Ciscos are also doing OSPF and full BGP tables. IPv4 and IPv6 is in use. HSRP used in a few places, including these particular 10gig ports. Management is in a VRF. The peculiar thing is the regularity of 5.5 hour cycle which is obvious in the logs and in the traffic graphs. Both cisco ports are identically configured except hsrp priority and ip address. interface TenGigabitEthernet9/2 ip address XXXX YYYY ip flow ingress ip flow egress standby 9 ip XXX standby 9 priority 105 standby 9 preempt delay minimum 120 standby 9 authentication md5 key-string 7 XXXX standby 9 track 1 decrement 20 no cdp enable Is there some known issue or any suggestions at all at this point? Compatibility issues? An IOS upgrade seems to be another thing to try but in reading through the IOS SXI and SXJ release notes I don't see anything obviously related. Or maybe even just a reboot might help. Thanks for any advice. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
