[nsp] E3 Performance Issue

[Yuval Ben-Ari]

I've seen this error couple of times after doing some network changes
that probably forced the LC to rebuild the CEF table.
I don't believe it should be caused by null routed packets being dropped
as this is easy on the LC as any other packet forwarded.
Of course if the flood was massive enough to cause your routing protocol
to flap which will require FIB rebuild it could explain it.
So you have to look for other clues in the logs/monitoring tools ....

Yuval

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of 
> ych3425 at chollian.net
> Sent: Wednesday, February 11, 2004 07:03
> To: cisco-nsp at puck.nether.net
> Subject: [nsp] E3 Performance Issue
> 
> 
> Hi! 
> 
> Have you ever heard about or experienced performance 
> degrading on E3 type
> LC of GSR when a vast amount of packet which was being 
> flooded to LC was
> being dropped by Null route or Remote Triggered Black-hole? 
> 
> In this situation, our GSR produced a following error log.
> 
> SLOT 5:Feb 10 09:37:47: %SYS-3-CPUHOG: Task ran for 2644 msec (15/0),
> process = CEF process, PC = 40DAD40C.
> 
> IOS : 12.0(25)S1
> 
> Thanks.  
> 
> Regards,
>  
> Cheol-Hee Yun
> 
> BoraNeT NOC(noc at bora.net), DACOM (AS3786), KOREA.
> TEL: + 82 (2) 6220-0535
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