Resolved! problem with my ACL
helloi use 2 core switches : c6500 SUP1+PFC+MSFC2 (12.1)using HSRP....i added an ACL to vlan 122:ip access-list extended acl122 permit ip 10.122.0.0 0.0.255.255 100.100.0.0 0.0.255.255int vlan 122 ip access-group acl122 innow, from a computer in vla...