Administrator Guide

Displaying Uplink Failure Detection..............................................................................................................................940
Sample Conguration: Uplink Failure Detection.........................................................................................................942
58 Upgrade Procedures................................................................................................................................ 944
Get Help with Upgrades............................................................................................................................................... 944
59 Virtual LANs (VLANs)..............................................................................................................................945
Default VLAN................................................................................................................................................................. 946
Port-Based VLANs........................................................................................................................................................ 946
VLANs and Port Tagging...............................................................................................................................................947
Conguration Task List..................................................................................................................................................947
Creating a Port-Based VLAN................................................................................................................................. 947
Assigning Interfaces to a VLAN............................................................................................................................. 948
Moving Untagged Interfaces..................................................................................................................................949
Assigning an IP Address to a VLAN...................................................................................................................... 950
Conguring Native VLANs........................................................................................................................................... 950
Enabling Null VLAN as the Default VLAN................................................................................................................... 951
60 VLT Proxy Gateway................................................................................................................................. 952
Proxy Gateway in VLT Domains................................................................................................................................... 952
Guidelines for Enabling the VLT Proxy Gateway..................................................................................................953
Enable VLT Proxy Gateway.................................................................................................................................... 954
LLDP Organizational TLV for Proxy Gateway...................................................................................................... 954
LLDP VLT Proxy Gateway in a Square VLT Topology......................................................................................... 956
Conguring an LLDP VLT Proxy Gateway..................................................................................................................957
Conguring a Static VLT Proxy Gateway....................................................................................................................957
61 Virtual Link Trunking (VLT).......................................................................................................................958
Overview........................................................................................................................................................................ 958
VLT on Core Switches............................................................................................................................................. 961
Enhanced VLT...........................................................................................................................................................961
VLT Terminology............................................................................................................................................................ 962
Congure Virtual Link Trunking.................................................................................................................................... 963
Important Points to Remember............................................................................................................................. 963
Conguration Notes................................................................................................................................................ 964
Primary and Secondary VLT Peers........................................................................................................................967
RSTP and VLT..........................................................................................................................................................967
VLT Bandwidth Monitoring.....................................................................................................................................967
VLT and Stacking.....................................................................................................................................................968
VLT and IGMP Snooping........................................................................................................................................ 968
VLT IPv6................................................................................................................................................................... 968
VLT Port Delayed Restoration................................................................................................................................968
PIM-Sparse Mode Support on VLT.......................................................................................................................969
VLT Routing .............................................................................................................................................................970
Non-VLT ARP Sync..................................................................................................................................................972
RSTP Conguration.......................................................................................................................................................972
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