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

[Scott Harvanek]

Well shoot, that's a great idea, looks like this command is "hidden" so 
I didn't even see it.  I assume AGGREGATOR4 is type code 18? I can't 
find anything official confirming that though?

Scott H.

On 9/24/14, 3:39 PM, Alexander Arseniev wrote:
> 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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