[f-nsp] Unexpected CPU load on NetIron CER

[Lutz Knabenreich]

Hi,

 > Has anyone seen similar behavior?
 >
 > IronWare : Version 5.5.0cT183 Copyright (c) 1996-2013 Brocade 
Communications
 > Systems, Inc.
 >

when we started to test the CER 2024F-4x in our environment we 
discovered high cpu load as well, when using IPv6.

"sh cpu lp" was at unusual high levels:

09:15:15 GMT+01 Thu Sep 26 2013

SLOT #: LP CPU UTILIZATION in %:
in 1 second: in 5 seconds: in 60 seconds: in 300 seconds:
1: 67 67 67 67
2: 67 67 67 67

The root cause was found in a high amount of ipv6 discovery and 
solliciatations.

In our specific case it was fixed in 5500d, and the issue was traced 
back to the fix made for 459558 in 5500c.


Best regards
Lutz Knabenreich
-- 
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Lutz Knabenreich             Fax: +49 211 87550555
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Geschaeftsfuehrer                 Lutz Knabenreich