[c-nsp] Cisco 7206VXR/NPE-G1 <--> Cisco WS-C6506 (R7000)

[David Storandt]

The CPU may be freaking out as interfaces and routing protocols think
as errors stack up quickly the link is flapping, causing a lot of SPF
calculations or BGP table re-syncs. Once the errors die off the
interfaces appear stable.

With both interfaces receiving the same garbled packets, it's unlikely
a set of optics have gone bad and impacted both the transmitter and
receivers. So it sounds like you have dirty patch interfaces or a
mangled patch cable. Clean each with >95% isopropyl alcohol and
lint-free wipes and/or replace the patch cable(s). If that doesn't
clear it up, swap GBICs.

Are you using newer 1300nm GBICs with older 62.5/125um patch cables?

-D


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We have a 7206 that is getting lots of input errors and overrun errors
on the LAN side without CRC errors.  On the WAN side we are getting
all 3 but on a much smaller scale.  Every couple of weeks the CPU goes
through the roof but the box has never rebooted.  Can anyone give me a
detailed breakdown of what I should be looking for here?