48 Tunneling ....................................................................................................... 835
Configuring a Tunnel........................................................................................................................835
Configuring Tunnel Keepalive Settings............................................................................................836
Configuring a Tunnel Interface........................................................................................................ 837
Configuring Tunnel allow-remote Decapsulation.......................................................................... 837
Configuring Tunnel source anylocal Decapsulation.......................................................................838
Guidelines for Configuring Multipoint Receive-Only Tunnels....................................................... 838
Multipoint Receive-Only Type and IP Unnumbered Interfaces for Tunnels..................................839
49 Upgrade Procedures.....................................................................................840
Get Help with Upgrades...................................................................................................................840
50 Virtual LANs (VLANs)......................................................................................841
Default VLAN..................................................................................................................................... 841
Port-Based VLANs............................................................................................................................ 842
VLANs and Port Tagging...................................................................................................................842
Configuration Task List.....................................................................................................................843
Creating a Port-Based VLAN...................................................................................................... 843
Assigning Interfaces to a VLAN.................................................................................................. 844
Moving Untagged Interfaces...................................................................................................... 845
Assigning an IP Address to a VLAN.............................................................................................847
Configuring Native VLANs................................................................................................................847
Enabling Null VLAN as the Default VLAN.........................................................................................848
51 VLT Proxy Gateway........................................................................................849
Proxy Gateway in VLT Domains.......................................................................................................849
LLDP organizational TLV for proxy gateway.............................................................................. 851
Sample Configuration Scenario for VLT Proxy Gateway...........................................................852
Configuring a Static VLT Proxy Gateway.........................................................................................854
Configuring an LLDP VLT Proxy Gateway....................................................................................... 854
52 Virtual Link Trunking (VLT)...........................................................................856
Overview........................................................................................................................................... 856
VLT on Core Switches.................................................................................................................857
Enhanced VLT............................................................................................................................. 857
VLT Terminology.............................................................................................................................. 858
Configure Virtual Link Trunking....................................................................................................... 859
Important Points to Remember................................................................................................. 859
Configuration Notes...................................................................................................................860
Primary and Secondary VLT Peers............................................................................................. 864
RSTP and VLT..............................................................................................................................864
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