Are there any pros and cons to the way an FWSM can be implemented in a 6509?
For instance, our WLAN deployment sits on four WiSMs in a 6509. We have a FWSM in the 6509 with an inside and outside VLAN, and a static route pointing to the inside of the FWSM from the 6509. All traffic goes to the interface of the FWSM, gets PAT'd out through one IP address and that's it.
I have been reading that I can move the gateway addresses to the FWSM from the 6509 and PAT each range out through the FWSM, but this time I would PAT each VLAN out through its own IP address.
I'm wondering if there are any advantages or disadvantages. The latter description would be a lot more work, but provide more granularity. I can also simply change our current deployment to PAT each VLAN out through its own mapped IP address.
Either way will result in traffic flowing, but is there a "more right" way to do this?