FB DISCUSSIONS: CONGESTION ON LINK: CHECK, TROUBLESHOOT & SOLUTION


how can we check congestion on link and what all parameters and commands to check , if there is congestion on link . what all possible reason for congestion . what all possible steps for troubleshooting with commands

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  •  
    Ikram Khan likes this.
  •  
    Fahad Ahmed As far as I know or remember their is a software called WAN optimizer ,you can try that.

    Or you can check on wireshark software.

  •  
    Sumit Sharma Fahad Ahmed .. WAN optimizer is a separate dedicate device. Its purpose is to utilize its mechanism, compression is part of mechanism in such a way that Bandwidth requirement is reduced. Most common is Steelhead Riverbed.
  •  
    Sumit Sharma In Steelhead Riverbed, There is one feature, We have the option of checking Top Talkers List, which tells us which ip or user or device is utilizing maximum bandwidth with exact amount of data.
  •  
    Sumit Sharma HOW TO CHECK CONGESTION ?
    ———————————–
    OPTION 1: Check Live traffic, using command show interface summary

    ———————————–
    OPTION 2: NFA is Netw Flow Analyezer.If NFA is configured, NFA also captures the traffic
    over different interfaces with more details
    ———————————–
    OPTION 3: If Riverbed is configured,
    we have feature called Top Talkers List to check exact amount of data for every ip
    ———————————–
    If the utilization is normal at a particular time,
    we need to observe the traffic trend at the peak time or office business hours
    •  
      Sumit Sharma If you know that there is congestion in the network,
      it means you already got the output that yes bandwidth utilization is high
      ——————————

      Normally, problem comes in like LATENCY in the network,
      for that one of the reason can be the congestion.
      ——————————
    •  
      Sumit Sharma SOLUTION
      ————–
      OPTION 1: Increase the Bandiwdth

      ————–
      OPTION 2: Deploy WAN optimizer device like Steelhead Riverbed
      ————–
      OPTION 3: Most of the time what happens is Two different servers are communicating with each other for backup. This traffic is utilization is maximum proportion of Bandwidth.
      Solution is to dedicate separate link for critical Datacenter servers communication or traffic
      ————-
      OPTION 4: Simply find the culprit user & try to decrease the utilization
      ————–
    •  
      Karan Puri what else if there is no wan optimizer in between ? Top talkers will help ?
    •  
      Sumit Sharma We can check list of Top Talkers, only on the Steelhead Riverbed device.

 

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