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Forum Discussion

Tyron_Fourie_18's avatar
Tyron_Fourie_18
Icon for Cirrus rankCirrus
Feb 20, 2017

Passing on url in header to LB Pool.

Hi,   With out current setup we have varnish servers that will treat traffic differently depending on what url is received in the header from the client making the request.   These are being mo...
application delivery
BIG-IP
LTM
Leonardo_Souza's avatar
Leonardo_Souza
Icon for Cirrocumulus rankCirrocumulus
Feb 20, 2017

The pool members will see , that does not change automatically. The destination (and if necessary, the destination port) will be translated to the server IP address, and translated back in the response when passing the F5 unit.

Here is the output of a quick tests I did.I ran the command 

curl --http1.1 http://www.example.com/
, in a pc with an entry in the host file to point that name to the F5 virtual server.I ran a tcpdump in the back end server, and opened the capture with wireshark.

Frame 4: 145 bytes on wire (1160 bits), 145 bytes captured (1160 bits)
    Ethernet II, Src: Vmware_df:04:b9 (00:0c:29:df:04:b9), Dst: Vmware_82:67:2f (00:0c:29:82:67:2f)
    Internet Protocol Version 4, Src: 10.0.0.32, Dst: 172.16.0.11
    Transmission Control Protocol, Src Port: 60618, Dst Port: 80, Seq: 1, Ack: 1, Len: 79
    Hypertext Transfer Protocol
        GET / HTTP/1.1\r\n
        Host: www.example.com\r\n
        User-Agent: curl/7.50.1\r\n
        Accept: */*\r\n
        \r\n
        [Full request URI: http://www.example.com/]
        [HTTP request 1/1]
        [Response in frame: 6]