Hi,
I have a 2811 router running Advanced IP Services 12.4(19) which has been
acting funny.
First issue I had was after inserting (2) WIC-1ADSL cards the processor
jumped to 99%. After shutting down the interfaces and rebooting, the router
went back to normal.
Now the router is becoming intermittently inaccessible via telnet, while
still passing traffic through its interfaces.
Total interfaces on unit:
(2) WIC-1DSU-T1-V2
(2) WIC-1ADSL
(1) NM-HDV2-1T1/E1 w/ (2) PVDM2-32 daughter cards
The other thing we did recently is add the NM-HDV2-1T1/E1. Before adding
these cards, we never had an issue.
Running a "show controller serial x/x/x" and a "show buffer" through the
Output Interpreter, I am told:
"WARNING: The interface Serial0/0/0 has reported 449 'overruns'. This is
because, the input rate exceeds the ability of the receiver to handle data
.... Paste the output of the show buffer command output into the Output
Interpreter to check whether the buffers can be tuned. "
"ERROR: Since its last reload, this router has created or maintained a
relatively large number of 'h2p1 buffers' yet still has very few free
buffers. The above symptoms suggest that a buffer leak has occurred."
I'm wondering if a buffer leak could be the source of the issue. Maybe this
wasn't a problem before the router had the new DSL cards and T1 network
module, but now the new cards are claiming too much memory and the buffer
leak is causing issues.
We could try down or upgrading the IOS ....
Thanks for advice,
Adam
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