Neep help on this strange issue. Two catalyst 6506 w/720 sup configured with hsrp on VLAN 23. However, "show standby vlan 23 all" shows two groups under hsrp 23. Where does group 1 coming from, and how to delete it? the Group 1 is doing nothing but g...

My network has VLANs span across the access layer. We have seen the return path traffic of unicast flooding to all access layer switchesand end points under each. According the Cisco document this problem can be fixed by tune the ARP aging timer less...