Junos OS

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  • 1.  Packet Drops command Request

    Posted 02-02-2011 06:23

    Hi Guys,

     

    Can anyone send me the effective commands to check packet drops on interfaces that can be helpful in network audit. QOS is already implemented there with 4 queues.

     

    Equipment: M320, M7i, M120, M10i

     

    any help appreciated!!!!

     

    regards,

    mehd



  • 2.  RE: Packet Drops command Request

    Posted 02-02-2011 14:31

    Hello,

    "show interface queue <interface-id>" will show you RED drops and tail drops in both egress and ingress queues (if ingress queues are supported on the HW used).

    "show interface <interface-id> media detail" will show you drops due to SA/DA MAC filtering; FIFO, CRC errors etc.

    "show pfe statistics traffic" will show you drops due to no matching route (normal discard)

    "show pfe statistics error" will show you drops inside PFE ASIC

    "show system statistics" will show you drops in RE due to no buffers/TCP auth errors/rate limit/no socket etc

    HTH

    Rgds

    Alex

     



  • 3.  RE: Packet Drops command Request

    Posted 08-17-2011 22:35

    Hi,

     

    Thanks a lot for the reply and info. One more thing that we're observing packet loss in BE forwarding class. Please find attached output that shows increasing BE packet loss. 

     

    As we've COS configurations on M10i Juniper router. As well as we've one flow of L2VPN traffic running on one of the bundle STM-4 links, as shown in attached output. that STM link has increased in the output BE packet loss. 

     

    Below is the configuration of COS on Juniper M10i router.

     

    set class-of-service schedulers Aftransmit-rate percent 5

    set class-of-service schedulers Af buffer-size percent 5

    set class-of-service schedulers Af priority high

    set class-of-service schedulers EF transmit-rate percent 67

    set class-of-service schedulers EF buffer-size temporal 100k

    set class-of-service schedulers EF priority high

    set class-of-service schedulers AF transmit-rate percent 26

    set class-of-service schedulers AF buffer-size percent 26

    set class-of-service schedulers AF priority low

    set class-of-service schedulers BE transmit-rate percent 2

    set class-of-service schedulers BE buffer-size remainder

     

    I've tested it with increasing the BE transmit rate 2% to 9%. but no success... 

     

    Please help to resolve the issue. 

     

    Br//Mehdi.