I hope someone will ahve an answer for this. I have an 837 installed on a customers site. This is a DMVPN spoke back to a hub site (C1841). This has happened this router before.
All of a sudden yesterday the router started losing packets between the Switch (3com superstack) and it's ethernet ports. Also any packets that got through had a latency of anywhere between 6ms and 4000ms. Unreal.
I changed ethernet ports on the 837 and reset the switch. last thing i did was shutdown that e0 on the 837 and brought it back up. hey presto it went back to normal operation. I do fear that this will ahppen again. Also i noticed over 100 input errors on e0 in a 6 hour period.
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input errors are usually caused by duplex and/or speed mismatches, or by cabling or NIC errors. If possible, exchange the cable between the Cisco and the 3Com. You also might want to try and isolate individual machines connected to the 3COM, possibly one of them is causing the problem. If you turn the machines on one by one, you should be able to see which one causes the errors. If you find the machine, check the NIC and exchange it, or run an anti-spyware program such as Spybot or Adaware on that machine, since it might also be infected...
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...