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

[Adam Greene]

Cisco 2811 (revision 53.51) with 245760K/16384K bytes of memory.

----- Original Message ----- 
From: "Alex Moya" <alexmoya at bellsouth.net>
To: "Adam Greene" <maillist at webjogger.net>
Cc: <cisco-nsp at puck.nether.net>
Sent: Monday, August 04, 2008 2:28 PM
Subject: Re: [c-nsp] buffer leak in 12.4(19)?


> 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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> 
>