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Forum Discussion

andy_12_5042's avatar
andy_12_5042
Icon for Nimbostratus rankNimbostratus
Aug 09, 2010

SNAT AUTOMAP

I understand how autonat works but I cant seem to find this answer. If you are not using floating ips and and have multiple public ips assigned to egress vlans, how does the map work.     What I...
config
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hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Aug 09, 2010
Hi Andy,

 

 

If you have multiple IP's in a SNAT pool or multiple self IPs on an egress VLAN with SNAT automap, LTM will round robin through them. I don't think there is any way within default configuration to change this behavior.

 

 

You can use an iRule to select the SNAT address based on the client IP. Here is an example in the post below. You could also modify this to check the selected destination server IP in LB_SELECTED using [LB::server addr].

 

 

SNAT pool and persistence

 

http://devcentral.f5.com/Forums/tabid/1082223/asg/52/showtab/groupforums/aff/31/aft/813179/afv/topic/Default.aspx813195

 

 

Aaron