[c-nsp] buffer leak in 12.4(19)?

Alex Moya alexmoya at bellsouth.net
Mon Aug 4 14:28:50 EDT 2008


How much men does the router have on it?

Sent from my iPhone

On Aug 4, 2008, at 1:54 PM, "Adam Greene" <maillist at webjogger.net>  
wrote:

> 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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