[j-nsp] Virtual Chassis RPD/BGP Rsync high CPU

[Alexander Arseniev]

Have You tried "drop-path-attributes" 
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10491 ?
You can drop any attribute, not only 128 as in the KB.
Thanks
Alex

On 24/09/2014 18:38, Scott Harvanek wrote:
> Okay so we traced this down to BGP Replication for NSR.  Looks like a 
> bad attribute kills the replication process.  Other than blocking the 
> received prefix is there a way to fix this:
>
> Sep 24 17:31:06  TUS-2-VC-1 rpd[48424]: Received malformed update from 
> xxxxxxxxx
> Sep 24 17:31:06  TUS-2-VC-1 rpd[48424]:   Family inet-unicast, prefix 
> 5.56.168.0/21
> Sep 24 17:31:06  TUS-2-VC-1 rpd[48424]:   Malformed Attribute 
> AGGREGATOR4(18) flag 0xc0 length 8.
> Sep 24 17:31:06  TUS-2-VC-1 rpd[48424]: Total incoming malformed 
> attributes from xxxxxxxxxx since last logging
> Sep 24 17:31:06  TUS-2-VC-1 rpd[48424]:   Received  1 malformed 
> attribute AGGREGATOR4(18)
>
> Mind you, the primary session with the peer stays up, this only kills 
> the replication process...
>
> Scott H.
>
> On 9/18/14, 11:38 AM, Scott Harvanek wrote:
>> Has anyone had a issue with MX units in a VC where BGP rsync was 
>> consuming a boatload of CPU?
>>
>> Master chassis shows:
>> Task                       Started    User Time  System Time Longest Run
>> BGP rsync                     9650          10. 0.8          0.0
>> ( BGP rsync is the only task with any user time during high user CPU 
>> for rpd )
>>
>> now, that's only like 20% CPU on the master but on the slave it's 
>> 90%....  This seems to have happened when our total paths exceeded 
>> 2MM but does not seem to be a memory issue:
>>
>>     Dynamically allocated memory:  411009024      Maximum: 808517632
>>          Program data+BSS memory:    5537792      Maximum: 5537792
>>               Page data overhead:    1196032      Maximum: 1196032
>>              Page directory size:     212992      Maximum: 212992
>>                   ----------
>>               Total bytes in use:  417955840 (12% of available memory)
>>
>
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