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Linda_01_162621's avatar
Linda_01_162621
Icon for Nimbostratus rankNimbostratus
Jan 26, 2015

BIG-IP does not establish TCP server connection

I have a simple configuration of a BIG-IP LTM load balancing multiple ISPs (external VLAN). On the internal VLAN, I have a PC (for test) that I use to access the internet (external network) through load balanced ISPs. I am able to stream video over to a remote machine.

 

I have three VS: 1. wildcard (all ports), performance Layer4 and all protocols on the configuration profile. 2. - wildcard (all ports), standard type with TCP on the configuration profile 3. - wildcard (all ports), standard type with UDP on the configuration profile

 

My problem is, I cannot connect to a remote FTP server. I created an iRule with all CLIENT events to see what is going on. It turns out that the Big-IP does not establish server connections for TCP request, it does so for UDP connections only. Am I missing some configuration on the VS?

 

1 Reply

  • Matt_Dierick's avatar
    Matt_Dierick
    Icon for Employee rankEmployee
    Jan 26, 2015

    It's normal, have a look on sol14800.

     

    There is an order of precedence, and your VS2 and VS3 are the same (except protocol type that is not part of the order). So TCP connection arrives on VS2.

     

    Combine V2 and VS3 into one VS with *All Protocol instead of TCP or UDP.

     

    Hope this help. Matt