I have an F5 Load Balancer connect to a 3750 via an ether channel that contains two gig ports. It works great, but when I copy the port configurations to my 6513 I get input errors. The 3750 is running Version 12.1(14)EA1a and the 6513 is running 1...

The command span 8/15 (Router with DS3) 9/10 (sniffer) shows no traffic. All I see are HSRP broadcast. The sniffer works fine we spanning a port on another switch. No matter what ports I span on the 6509 I only get HSRP broadcase.