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Misael_Lopez's avatar
Misael_Lopez
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Nov 02, 2015

Outbound SNAT Link Controller

Hello Everyone,

 

We are planning to install 2 BIG IP system in HA with link controller license in order to load balance 2 ISPs to Internet. the planned deployment would be: Internet <-> 2 Routers ISPs <-> Link controllers <-> FW <-> internal network. On the internal network there are several servers that currently have a NAT in the FW and the outbound communication of them is with a public IP of one of the ISPs.

 

For example actually the email server goes to Internet with public IP 201.140.99.5 (FW NAT) because We have just 1 ISP but when the F5 link controller were installed We will look that F5 perform load balance thru both ISPs so the email server have to go to delivery with 2 public IPs one of each ISP. F5 may retain (NO NAT) the current IP firewall´s NAT when using the first ISP and change the public ip (source NAT) when using the second ISP in order to avoid asynchronous routing? This is an example We have some servers that need to contact remote locations with the current FW NAT. We would like to use a round robin schema.

 

We try with SNAT pools in a lab environment but it does not work and also with NAT enabled just on the VLAN of the second ISP but also it does not work.

 

Regards

 

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