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

Thomas_Schwanhä's avatar
Thomas_Schwanhä
Icon for Nimbostratus rankNimbostratus
Sep 20, 2009

SNAT: Which IP is choosed for outgoing connection

Hi,     we have a SNAT pool set up with one IP-address in the Internet VLAN and one IP-address in a private VLAN.     For example:       Internet-VLAN 195.196.19...
config
design
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Sep 21, 2009
Sorry... if you're using SNAT on a VIP, you can only specify one SNAT pool on the VIP. Else, you could use an iRule which evaluates the destination IP address/subnet and then explicitly sets a SNAT IP. This codeshare example might give you enough to start testing an iRule:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/SelectiveSNAT.html

 

 

Aaron