[c-nsp] Issues with Cisco Catalyst 4900M

[James Slepicka]

Not specifically seeing these issues, but I have at least one 4900M and 
a few 4500 Sup6E's running 12.2(52/53)SG that are experiencing CPU 
issues.  When configured with sub-second OSPF hello timers, they drop 
adjacencies when I copy a file (ftp/tftp) to bootflash.  High CPU 
utilization in the Exec/Virtual Exec process.  I suspect something is 
messed up with the scheduling/prioritization of processes.  This may be 
causing the issues that you're seeing as well.

BTW -- the OSPF issue is bug id CSCsw84727.  Cisco says it's fixed in 
12.2(52 and 53)SG, but it's obviously not.  Still waiting on resolution 
for this one.

Adam Rothschild wrote:
> Hi all,
>
> Anybody out there running into CPU exhaustion issues on this box (or a
> non-fixed-configuration Sup6E, ...), linked to the "low priority"
> management process and its dependencies?
>
> I'm specifically tracking CSCta54369 ("High CPU caused due to
> K5AclCamStatsMan hw process") along with CSCta77487 ("High cpu in K5L3
> review jobs with incomplete arps and big routing table").
>
> Cisco's troubleshooting guide[1] provides an interesting top-level
> overview of the architecture, though stops short of dispensing
> meaningful configuration pointers, assuming they exist.
>
> I've got a TAC case going, meanwhile any clues and/or experiences from
> the field, on- or off-list, would be greatly appreciated. :-)
>
> Thanks in advance,
> -a
>
> [1] http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml
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