I know the 4948 switches do not support a redirect list as per the WAAS deployment cookbook I found somewhere else on netpro.
The problem I get is that I cannot telnet to the loopback interface of the 4948 when I've got wccp and waas functioning at the wan edge layer. It pings ok; but it seems that the telnet packets are being redirected to the WAEs and not 'coming back' - the session hangs.
I can telnet to other IPs bound to interfaces on the 4948, and the WAAS appliance vlan interface address - its just the loopback that hangs.
I have "ip wccp 61 redirect in" on the WAN interface of the 4948 and " ip wccp 62 redirect in" on the LAN interface and the WAAS appliances are using L2 redirect and masking.
Note that I've also got the the 61 and 62 'reversed' at the DC end compared to the branch as per WAAS cookbook/text book.
On the 3750's we could set up a redirect list and deny the loopback from being redirected- but how can I get around this on the 4948?
I can get around it by creating a "loopback" vlan and assign the address to that, but I'd prefer just to have the standard loopback interface by itself working.
Also, what IOS is recommended for the 4948 in this wccp/waas scenario?
You definitely need a L3 link between the two where traffic doesn't get re-intercepted, especially for situations on WAN failures, etc. so your traffic doesn't loop back through the LAN side.
You can look for things like that in your syslog (find match âRouting Loopâ syslog.txt) or in the stats under "sh stat filtering.
Good luck with your deployment!!