Routing

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Ask questions and share experiences about ACX Series, CTP Series, MX Series, PTX Series, SSR Series, JRR Series, and all things routing, including portfolios and protocols.

  • 1.  Packet loss determination in network

    Posted 07-05-2015 21:44

    Hello

     

    How I can determine the packet loss in network and most important where packet loss is happening (on which switch or router in the path)?



  • 2.  RE: Packet loss determination in network
    Best Answer

    Posted 07-05-2015 23:37

    Pl use below commmands to get the details about packet loss.

     

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

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

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

    "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.

     

    and also reference

     

    http://www.juniper.net/techpubs/en_US/junos14.2/topics/concept/using-show-commands-for-packet-drops.html

     

    https://kb.juniper.net/InfoCenter/index?page=content&id=KB28175&smlogin=true

     

    http://www.juniper.net/techpubs/en_US/junos11.4/information-products/topic-collections/security/software-all/monitoring-and-troubleshooting/index.html?jd0e24088.html