I have a strange situation with WAAS. I am in progress of a project to upgrade my Cisco IP telephony and as a result preferred to update my remote sites routers to 12.4.x T code in order to register DSP resources over SCCP and match closely the CMgr version as many of the sites running mainline code didn't have updated parameters for this. To make a long story short, I upgraded (for other reasons) several non-voice sites routers that have WAE 512s running 4.1.7 with the latest 12.4.xT code and didn't have an issue. All upgraded sites are running 2821's or 2811's except this one site I had an issue with. I needed T code on this particular site router and assumed since others sites reacted well with the IOS upgrade and WAAS that this site wouldn't be different but it was!
Situation: After updating this 2851 router from 12.4.25c mainline to 12.4.24T3, traffic from WAN was directing to WAE but no return. It appeared also that any LAN redirection was also working but no return from WAE. I didn't see any WCCP flow statistics incrementing but traffic was being directed to the WAE. WAE connection statistics were building but all TCP based traffic was getting dropped. I tried 3 different feature sets of same code version wondering if I've encountered a bug but none of the featured images worked. I downgraded to 12.4.24T2 and still nothing. Changed IOS back to mainline code and WAE was back operational as expected. During the testing of each IOS change, I've reset the WAE also hoping it didn't get hung up with some WCCP process from the previous IOS change in case there was some codebug occuring.
With respect to this site, we have a 2851 with multilinked serial interfaces to MPLS; WAN interface is redirecting 62 in with an ACL that disallows a couple of hosts. LAN side of router is single Gig port (router on a stick). 5 sub-interfaces configured with DOT1Q encap. including one interface for WAAS. 2 of these user interfaces are redirecting 61 in and of course the interface servicing WAAS is redirect excluded in. The 61 WCCP group is also using ACL to oppositely match WCCP 62 group.
Why would this upgrade cause a problem especially using latest T code? Feature sets would be irrelevant. One more thing that makes this even stranger is I have one other voice site running a 2851 with 12.4.24T3 (already running) and is configured for WCCP the very same with same 512WAE and 4.1.7 code. The only difference is this router is running a "SP" feature set which I didn't try on this site that is failing.
Does this make any sense to anyone? I've seen posted from one of the WAAS experts a document listing compatible IOS version across platforms but these efforts are the latest code. Any help would be greatly appreciated! Thanks everyone.