SRX

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Ask questions and share experiences about the SRX Series, vSRX, and cSRX.
  • 1.  Finding Bandwidth Hog with SRX

    Posted 11-16-2011 13:10

    A few options, as I see it:

     

    1.  Use jflow (requires an external collector, or does it?*)

    2.  Use "show security flow session" and look for the highest byte/packet count (not really easy to use with a decent number of flows)

    3.  Use "port mirroring" or analyzer session and send data to a sniffer for top talker analysis.

     

    Any other ways?

     

     

    * Is there any way to view jflow data locally without using an external collector?  Similar to Cisco's "show ip cache flow" for netflow?  I see 'set forwarding-options sampling family inet output file' option, but that never gets populated with data.



  • 2.  RE: Finding Bandwidth Hog with SRX

    Posted 11-16-2011 13:55

    Use JFlow and an external collector... It is easy to see a trend sampled over time.

     

    Scrutinizer

    http://www.plixer.com/products/netflow-sflow/free-netflow-scrutinizer.php

     

    Scrutinizer is nice, you can use it for free but it only holds 24hrs of data when in free mode, however this is almost always enough for me at least sice bandwidth hogs show up nice and clear in the reports....

     

     



  • 3.  RE: Finding Bandwidth Hog with SRX

    Posted 11-16-2011 19:34

    Thanks.  Yep, I'm aware of Jflow with an external collector.  

     

    But I was really hoping for a quick way "on the SRX" without requiring an external application.  

     

    Like with Cisco's Netflow implementation....  Sure, you can export it to a netflow collector.  But you can also just use it locally with the "show ip cache flow" command.  So without installing any type of collector, you can quickly see who is hogging all of the bandwidth.

     

    I was hoping I could use jflow with a local file.  But that doesn't seem to work.  



  • 4.  RE: Finding Bandwidth Hog with SRX

    Posted 11-17-2011 08:49

    This might help

    http://www.juniper.net/techpubs/en_US/junos10.2/topics/reference/command-summary/show-services-subscriber-bandwidth.html

     

    I still think setting up a collector is a far better way, since this is often a repeat problem, and sometimes you receive reports of "its slow" after the fact and it is easy to go back a few hours or min and look at the collector to see who was the problem or see a trend if you have peek hours problems.



  • 5.  RE: Finding Bandwidth Hog with SRX

    Posted 03-23-2016 03:28

    Dear SomITGuy

     

    Did you find any solution for this issue? Could you please share it with me

     

     

    Best Regards

    Alcidio Tembe


    @SomeITGuy wrote:

    This might help

    http://www.juniper.net/techpubs/en_US/junos10.2/topics/reference/command-summary/show-services-subscriber-bandwidth.html

     

    I still think setting up a collector is a far better way, since this is often a repeat problem, and sometimes you receive reports of "its slow" after the fact and it is easy to go back a few hours or min and look at the collector to see who was the problem or see a trend if you have peek hours problems.



    @SomeITGuy wrote:

    This might help

    http://www.juniper.net/techpubs/en_US/junos10.2/topics/reference/command-summary/show-services-subscriber-bandwidth.html

     

    I still think setting up a collector is a far better way, since this is often a repeat problem, and sometimes you receive reports of "its slow" after the fact and it is easy to go back a few hours or min and look at the collector to see who was the problem or see a trend if you have peek hours problems.