Reference Guide
49 Upgrade Procedures.........................................................................................844
Get Help with Upgrades...................................................................................................................844
50 Virtual LANs (VLANs).........................................................................................845
Default VLAN.....................................................................................................................................845
Port-Based VLANs............................................................................................................................ 846
VLANs and Port Tagging.................................................................................................................. 846
Configuration Task List.....................................................................................................................847
Creating a Port-Based VLAN...................................................................................................... 847
Assigning Interfaces to a VLAN.................................................................................................. 848
Moving Untagged Interfaces......................................................................................................850
Assigning an IP Address to a VLAN............................................................................................. 851
Configuring Native VLANs................................................................................................................ 851
Enabling Null VLAN as the Default VLAN.........................................................................................852
51 VLT Proxy Gateway............................................................................................ 853
Proxy Gateway in VLT Domains....................................................................................................... 853
LLDP organizational TLV for proxy gateway..............................................................................855
Sample Configuration Scenario for VLT Proxy Gateway...........................................................856
Configuring a Static VLT Proxy Gateway.........................................................................................858
Configuring an LLDP VLT Proxy Gateway....................................................................................... 858
52 Virtual Link Trunking (VLT)............................................................................. 860
Overview...........................................................................................................................................860
VLT on Core Switches.................................................................................................................861
Enhanced VLT..............................................................................................................................861
VLT Terminology.............................................................................................................................. 862
Configure Virtual Link Trunking....................................................................................................... 863
Important Points to Remember................................................................................................. 863
Configuration Notes...................................................................................................................864
Primary and Secondary VLT Peers............................................................................................. 868
RSTP and VLT..............................................................................................................................868
VLT Bandwidth Monitoring.........................................................................................................868
VLT and IGMP Snooping............................................................................................................ 869
VLT IPv6.......................................................................................................................................869
VLT Port Delayed Restoration.................................................................................................... 869
PIM-Sparse Mode Support on VLT.............................................................................................870
VLT Routing ................................................................................................................................ 871
Non-VLT ARP Sync..................................................................................................................... 874
RSTP Configuration.......................................................................................................................... 874
Preventing Forwarding Loops in a VLT Domain........................................................................ 874