[c-nsp] problem with a NPE-G2

[Rodney Dunn]

12.4(4)XD was a development branch for time to market delivery of
the G2. It collapsed in to 12.4(11)T that is now on CCO so that
is the migration path for 12.4(4)XD.

Can someone try putting a device on a segment that doesn't
have any traffic on it and ping to/from the router?

Let the traffic be traversing the platform via a different set
of interfaces.

Rodney

On Fri, Dec 15, 2006 at 04:10:34PM +0200, Chris Hantzis wrote:
> Hello all,
> 
> >From the mentioned symptoms, I assume you are using 12.2.31SB2.
> I have faced exactly the same and opened a case for this, but no news from
> TAC so far. 
> 
> Have also used the 12.4.4XD4 (sp services) on the NPE-G2 without any
> problems for many weeks and suggest using this version for a production
> environment, at the moment. Unfortunately the number of IOS versions for the
> G2 are still very limited.
> 
> Regards,
> 
> Chris.  
> 
> Message: 7
> Date: Fri, 15 Dec 2006 12:20:08 +0100
> From: "Frank Kempermann" <cisco-nsp at kempermann.de>
> Subject: [c-nsp] problem with a NPE-G2
> To: <cisco-nsp at puck.nether.net>
> Message-ID: <023201c7203a$faad6c90$ac00a8c0 at jebsch>
> Content-Type: text/plain;	charset="us-ascii"
> 
> Hello to the list,
> 
>  
> 
> I currently have a 7204 NPE-400 with a GE-E controller running amongst
> others. There are configured three full BGP feeds, as well as OSPF. I'm
> using the latest 12.0 Service Provider IOS . This is running quite well,
> however the machine is reaching its limits noticably now. A small DoS-attack
> could breakdown the router.
> 
>  
> 
> My hardware dealer has given me a NPE-G2 for testing. According to Cisco it
> should have twice the performance of an G1.
> 
>  
> 
> During the first tests with the same configuration as used with the NPE-400
> I encountered the following problems which I wasn't able to solve by myself
> so far.
> 
>  
> 
> A Ping to one of the IP-addresses configured on the Cisco GigE Interface
> shows high latency every few pings; even higher as on the NPE-400...
> 
>  
> 
> rescue-ix:~# ping 193.xxxxxxxxx
> 
> PING 193.xxxxxxxxxxxxx (193.xxxxxxxxxxx) 56(84) bytes of data.
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=1 ttl=255 time=0.282 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=2 ttl=255 time=0.294 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=3 ttl=255 time=0.556 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=4 ttl=255 time=442 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=5 ttl=255 time=0.333 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=6 ttl=255 time=0.481 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=7 ttl=255 time=0.271 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=8 ttl=255 time=0.901 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=9 ttl=255 time=295 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=10 ttl=255 time=0.596 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=11 ttl=255 time=0.499 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=12 ttl=255 time=0.305 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=13 ttl=255 time=0.258 ms
> 
> 64 bytes from 193.xxxxxxxxxxx: icmp_seq=14 ttl=255 time=149 ms
> 
>  
> 
> A "show process cpu" reads
> 
> 16     4731200     21796     217067 16.47% 17.71% 17.65%   0 EnvMon
> 
>  
> 
> This is what seems to be eating up the CPU time... There's only a service
> provider image available for the machine at this time. Because of that I'm
> not able to test another IOS.
> 
>  
> 
> The utilization of the CPU is not high (20-30%), but why are the latencies
> this bad when sending pings to the router?
> 
>  
> 
> I have completely disabled BGP, have completely disabled SNMP, the values
> were unchanged.
> 
>  
> 
> When one is connected to the machine by telnet remotely, it seems there are
> light "lags" from time to time. However, there are no peaks when looking at
> "show process cpu history".
> 
>  
> 
> The routing through the router is 100% OK, bandwidth up to 300 MBit/s is
> tested and poses no problems to the CPU. The only unanswered question is
> where the lags and the sometimes high latency when pinging the router's IP's
> is coming from.
> 
>  
> 
> Does anyone know this problem and maybe has a solution?
> 
>  
> 
>  
> 
> Many thanks in advance!
> 
>  
> 
>  
> 
> Regards, 
> 
> Frank
> 
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