Forum Discussion

Sean_Youngberg_'s avatar
Sean_Youngberg_
Icon for Nimbostratus rankNimbostratus
Sep 16, 2013

ToS getting reset to 0 when egress from LTM

Scenario:   Micrsoft Lync front-end servers. Their gateway is on the LTM. Client requests to the front-end are balanced by virtual servers on a variety of ports.   The Lync servers are configur...
deployment
microsoft
qos
tcp profile
tos
Sean_Youngberg_'s avatar
Sean_Youngberg_
Icon for Nimbostratus rankNimbostratus
Sep 16, 2013

I verified that Pool settings are all correctly set to Pass Through. I suppose I will next try to set the ToS value in the TCP profile instead of using Pass Through.

 

  • boneyard's avatar
    boneyard
    Icon for MVP rankMVP
    Sep 17, 2013
    personally i would raise a ticket with F5 support, if it is a bug they will get it fixed.
  • What_Lies_Bene1's avatar
    What_Lies_Bene1
    Icon for Cirrostratus rankCirrostratus
    Sep 17, 2013
    I'd agree that a ticket with F5 would be beneficial to you and others.
  • Sean_Youngberg_'s avatar
    Sean_Youngberg_
    Icon for Nimbostratus rankNimbostratus
    Sep 17, 2013
    I have a case started. I will update this question with the outcome. Thanks!
  • player_72606's avatar
    player_72606
    Icon for Nimbostratus rankNimbostratus
    Oct 22, 2013
    we have the same issue, can you please update us, any progress? as a workaround we are using an irule to prevent the zeroing : when CLIENT_ACCEPTED { set client_tos [IP::tos] } when SERVER_CONNECTED { IP::tos $client_tos }