Forum Discussion

Josh_Hill_17083's avatar
Josh_Hill_17083
Icon for Nimbostratus rankNimbostratus
Apr 13, 2011

SNAT Pools - Internal LTM Routing

Hi Everyone,

 

 

I am working with an usual design that I need some advice on.

 

 

 

We are deploying the LTM with an production internal and external vlans and UAT internal and external VLANs. The design is using route domains so the production vlans are on the default route domain, while the UAT vlans are on route domain %1.

 

 

 

1) On the internal UAT VLAN there is a self-ip address of 172.16.0.10%1

 

 

 

2) There is also a Default Gateway for the route domain %1 of 172.16.0.254%1

 

 

 

3) The design I am working with calls for a snat pool for use on the UAT VLANS, using 10.0.0.1%1 through to 10.0.0.15%1.

 

 

 

4) This snat pool is then assigned to the appropriate UAT Virtual Server so incoming client ip addresses are translated to a 10.0.0.0%1 address in the above mentioned pool, for this example lets say 10.0.0.9%1

 

 

 

5) The design assumes that the F5 will route that connection (using the src address 10.0.0.9%1) through the internal 172.16.0.10%1 self-ip and forward the packet onto the gateway at 172.16.0.254 and off to the servers.

 

 

 

6) The router at 172.16.0.254 has a route for 10.0.0.0/24 pointing to the 172.16.0.10%1 address of the F5 so that when the server returns traffic to the 10.0.0.9 address, it eventually arrives back at the 172.16.0.10%1 self-ip address of the LTM

 

 

 

Does anyone see a reason why this would not work?

 

 

 

Kind Regards

 

Josh

 

 

 

 

 

No RepliesBe the first to reply