Hi Guys,Recently, I used Nexus 3524-XL as the backup coreswitch to replace my Catalyst switch. However, the Nexus switch cannot learn to establish OSPF neighbor with my 2 IOS routers. I use GNS3 Lab to emulate  and get the same issue.However, when I ...

today i encountered a problem on Catalyst 6807, It no indication "Duplicate sequence number" when i add a new access-list item with same list number, when if I add all the same item with same list number, it indicate me "Duplicate sequence number". T...