Assigning Interfaces to a VLAN...................................................................................................912
Moving Untagged Interfaces.......................................................................................................913
Assigning an IP Address to a VLAN.............................................................................................914
Configuring Native VLANs................................................................................................................ 915
Enabling Null VLAN as the Default VLAN......................................................................................... 916
54 VLT Proxy Gateway........................................................................................ 917
Proxy Gateway in VLT Domains........................................................................................................917
Guidelines for Enabling the VLT Proxy Gateway....................................................................... 918
Enabling the VLT Proxy Gateway................................................................................................919
LLDP Organizational TLV for Proxy Gateway............................................................................ 920
Configuring a Static VLT Proxy Gateway......................................................................................... 922
Configuring an LLDP VLT Proxy Gateway....................................................................................... 922
55 Virtual Link Trunking (VLT)...........................................................................924
Overview........................................................................................................................................... 924
VLT on Core Switches.................................................................................................................925
Enhanced VLT............................................................................................................................. 925
VLT Terminology.............................................................................................................................. 926
Configure Virtual Link Trunking........................................................................................................927
Important Points to Remember..................................................................................................927
Configuration Notes................................................................................................................... 928
Primary and Secondary VLT Peers............................................................................................. 932
RSTP and VLT.............................................................................................................................. 932
VLT Bandwidth Monitoring.........................................................................................................932
VLT and IGMP Snooping.............................................................................................................933
VLT IPv6.......................................................................................................................................933
VLT Port Delayed Restoration.................................................................................................... 933
PIM-Sparse Mode Support on VLT.............................................................................................933
VLT Routing ................................................................................................................................935
Non-VLT ARP Sync..................................................................................................................... 937
RSTP Configuration...........................................................................................................................937
Preventing Forwarding Loops in a VLT Domain........................................................................938
Sample RSTP Configuration....................................................................................................... 938
Configuring VLT..........................................................................................................................939
PVST+ Configuration........................................................................................................................950
Sample PVST+ Configuration..................................................................................................... 951
eVLT Configuration Example............................................................................................................951
eVLT Configuration Step Examples............................................................................................952
PIM-Sparse Mode Configuration Example...................................................................................... 954
Verifying a VLT Configuration.......................................................................................................... 954
Additional VLT Sample Configurations............................................................................................ 958
30