Important Points to Remember................................................................................................................................... 848Configuring Uplink Failure Detection........................................................................................................................... 849Clearing a UFD-Disabled Interface.............................................................................................................................. 850Displaying Uplink Failure Detection...............................................................................................................................851Sample Configuration: Uplink Failure Detection.........................................................................................................85353 Tunneling................................................................................................................................................. 854Configuring a Tunnel......................................................................................................................................................854Configuring Tunnel Keepalive Settings....................................................................................................................... 855Configuring a Tunnel Interface.....................................................................................................................................856Configuring Tunnel Allow-Remote Decapsulation......................................................................................................856Configuring Tunnel source anylocal Decapsulation....................................................................................................857Guidelines for Configuring Multipoint Receive-Only Tunnels................................................................................... 857Multipoint Receive-Only Tunnels................................................................................................................................. 85754 Upgrade Procedures................................................................................................................................ 858Get Help with Upgrades............................................................................................................................................... 85855 Virtual LANs (VLANs)..............................................................................................................................859Default VLAN................................................................................................................................................................. 860Port-Based VLANs........................................................................................................................................................ 860VLANs and Port Tagging............................................................................................................................................... 861Configuration Task List.................................................................................................................................................. 861Creating a Port-Based VLAN..................................................................................................................................861Assigning Interfaces to a VLAN............................................................................................................................. 862Moving Untagged Interfaces..................................................................................................................................863Assigning an IP Address to a VLAN.......................................................................................................................864Configuring Native VLANs........................................................................................................................................... 864Enabling Null VLAN as the Default VLAN.................................................................................................................. 86556 VLT Proxy Gateway................................................................................................................................. 866Proxy Gateway in VLT Domains................................................................................................................................... 866Guidelines for Enabling the VLT Proxy Gateway..................................................................................................867Enable VLT Proxy Gateway.................................................................................................................................... 868LLDP Organizational TLV for Proxy Gateway...................................................................................................... 868LLDP VLT Proxy Gateway in a Square VLT Topology..........................................................................................870Configuring a Static VLT Proxy Gateway.....................................................................................................................871Configuring an LLDP VLT Proxy Gateway...................................................................................................................87157 Virtual Link Trunking (VLT).......................................................................................................................872Overview......................................................................................................................................................................... 872VLT on Core Switches.............................................................................................................................................875Enhanced VLT.......................................................................................................................................................... 875VLT Terminology.............................................................................................................................................................876Configure Virtual Link Trunking.....................................................................................................................................877Important Points to Remember..............................................................................................................................87728 Contents
