NAT on 6500 Switch

[jschweng]

We have a fully meshed OSPF network using 6500 switches at the Core and Dist Level.   Off two of the Dist Switches are external routers that route out to other networks.  All traffic going to the external networks goes through these two 6500 switches. 

We need to NAT traffic from specific private subnets going through these switches out to external networks.

I think we got it to work using static NATs but would prefer to use a NAT pool and overload.

I'm told they cannot do stateful NAT between two redundant switches                   

Any help is appreciated

ios level  is 12.2(33)SXI7

[gnijs]

I have the same problem. Any idea on how to do statefull NAT across two OSPF load-balanced L3 core or distri switches (6500) ?

[Giuseppe Larosa]

Hello @gnijs ,

pairing the two C6500 in a VSS if possible is probably the only way to achieve this.

Stateful NAT is supported on ISR routers using HSRP groups on the "inside" and "outside" interfaces and reduandancy group . But I am afraid this feature is not available on Cat 6500.

Hope to help

Giuseppe