F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

David_20479's avatar
David_20479
Icon for Nimbostratus rankNimbostratus
Feb 17, 2012

CIFS/SMB

Hi Guys,

 

 

I have set up a FastL4 VIP to manage SMB traffic on port 445.

 

the problem is i am seeing big performance degradation in comparison to browsing directly to the SMB share (bypassing the F5).

 

 

 

Is there something I can do to de-throttle this?

 

 

 

 

 

 

 

Dave

 

config
design

3 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Feb 20, 2012
    Hi Dave,

     

     

    Can you reply with your VS config using 'tmsh list ltm virtual VS_NAME' or 'b virtual VS_NAME list'?

     

     

    Can you capture a tcpdump of the traffic? tcpdump -ni 0.0 -Xs0 -w/var/tmp/smb.1.dmp port host CLIENT_IP or host SERVER_IP

     

     

    If you need help capturing or analyzing the tcpdump you can open a case with F5 Support.

     

     

    Aaron
  • David_20479's avatar
    David_20479
    Icon for Nimbostratus rankNimbostratus
    Feb 21, 2012
    [user@bigip:Active] ~ tmsh list ltm virtual blob-prod.domain.com-445

     

    ltm virtual blob-prod.domain.com-445 {

     

    destination 10.100.64.101:microsoft-ds

     

    ip-protocol tcp

     

    mask 255.255.255.255

     

    partition Windows

     

    persist {

     

    blob-persist {

     

    default yes

     

    }

     

    }

     

    pool blob-prod.domain.com-445

     

    profiles {

     

    blob-fastL4 { }

     

    }

     

    snat automap

     

    }