Re: [nsp] ICMP slowness on PA-A3 with lots of PVC's

From: Hank Nussbacher (hank@ibm.net.il)
Date: Thu Sep 23 1999 - 14:43:24 EDT


At 04:01 22/09/99 -0400, Steffen Baur wrote:

We have the same situation on a PA-T3 link running between a 7505 and a
7507 (IOS 12.0(5)S) on a VIP2-50. Shut/no shut fixes the RTT delay
problem. We are not sure it is not some subtle routing problem. -Hank

>Neil,
>
>On Mon, Sep 20, 1999 at 01:39:40PM +0100, Neil J. McRae wrote:
>>
>> We have a PA-A3 with around 80 PVC's and 80 Subinterfaces, we've
>> noticed that traffic between the Interface IP addresses of
>> each end of the PVC can have long RTT's, there appears to
>> be no pattern, we're wondering if its a special feature that the
>> Cisco might not be responding to pings because of load on
>> the router/A3 card, [which is very low]. 11.1CC25 Vip2/50 on a RSP4 7507.
>
>We experience RTTs around 1000ms to IP addresses on PA-A3
>subinterfaces, too. It can be fixed with a shutdown/ no shutdown of
>the subinterface. The high RTTs normally start after a crash of a VIP
>in another slot (which happens regularly recently :-( ).
>
> Steffen Baur, DFN-NOC
>--
>## Network Operation Center, German science network (DFN) ##
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>



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