WCCP is not supported on PFC3 platforms until 12.2(18)SXD1, with the absolute minimum recommendation being 12.2(18)SXF5. Depending on what you are using WCCP for (ACNS, WAAS, etc.), the recommended version may change.
Will there be any impact if we didn't remove the second statement : removing the "ip wccp redirect exclude in" in Cisco WAAS. By the way, the cat6500 is also having this command configured when I do sh run | inc ip wccp, it returns the following command:
ip wccp redirect exclude in
But I couldn't find the above command on the router.
For your information, we had tested using the current version of cat6500 which is 12.2(17a)SX4 and Cisco WAAS version 4.0.17. It was running for two days and due to an outage, we had to disconnect the Cisco WAAS from the 6500. But, the wccp commands were still enabled on the 6500.
There was a slight CPU increase for about nearly two weeks and on the second week when the CPU had increased around 30% (from normal usage around 25% , it went up to 55%), we had removed the WCCP commands from the router. But the CPU was still high after that. The high in CPU was observed at the switch as the router cpu usage is between 1-3% only.
We had opted to reboot the router and then everything was back to normal.
For your information, we had also NAM (Network Analyzer) module installed on the 6500 (WS-SVC-NAM-2). Can the NAM be a cause of the CPU spike ?
It's really a gamble running WCCP on 12.2(17a)SX4. Whatever happens happens, since the feature is not supported on that hardware/software combination. To ensure your success with WAAS and WCCP on the 6500, you should run 12.2(18)SXF13.
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