Users Guide

Getting Help with Switch Information.............................................................................................................................901
64 Virtual LANs (VLANs)............................................................................................... 902
Default VLAN.................................................................................................................................................................902
Port-Based VLANs.........................................................................................................................................................903
VLANs and Port Tagging................................................................................................................................................903
Conguration Task List...................................................................................................................................................904
Creating a Port-Based VLAN................................................................................................................................... 904
Assigning Interfaces to a VLAN................................................................................................................................905
Moving Untagged Interfaces....................................................................................................................................906
Assigning an IP Address to a VLAN.......................................................................................................................... 907
Enabling Null VLAN as the Default VLAN................................................................................................................. 907
Conguring Native VLANs............................................................................................................................................. 907
65 VLT Proxy Gateway...................................................................................................909
Proxy Gateway in VLT Domains......................................................................................................................................909
Guidelines for Enabling the VLT Proxy Gateway........................................................................................................910
Enabling the VLT Proxy Gateway...............................................................................................................................911
LLDP Organizational TLV for Proxy Gateway.............................................................................................................911
Conguring an LLDP VLT Proxy Gateway.......................................................................................................................913
Conguring a Static VLT Proxy Gateway........................................................................................................................ 913
66 Virtual Link Trunking (VLT)........................................................................................ 915
Overview........................................................................................................................................................................ 915
VLT on Core Switches.............................................................................................................................................. 916
Multiple VLT..............................................................................................................................................................917
VLT Terminology............................................................................................................................................................. 918
Congure Virtual Link Trunking....................................................................................................................................... 918
Important Points to Remember.................................................................................................................................918
Conguration Notes..................................................................................................................................................919
RSTP and VLT..........................................................................................................................................................922
VLT Bandwidth Monitoring.......................................................................................................................................922
VLT and Stacking..................................................................................................................................................... 922
VLT and IGMP Snooping.......................................................................................................................................... 922
VLT Port Delayed Restoration.................................................................................................................................. 923
PIM-Sparse Mode Support on VLT.......................................................................................................................... 923
RSTP Conguration....................................................................................................................................................... 925
Preventing Forwarding Loops in a VLT Domain........................................................................................................ 925
Sample RSTP Conguration.....................................................................................................................................925
Conguring VLT....................................................................................................................................................... 926
Conguring a VLT Interconnect................................................................................................................................926
Enabling VLT and Creating a VLT Domain.................................................................................................................927
Conguring a VLT Backup Link.................................................................................................................................927
Conguring a VLT Port Delay Period........................................................................................................................ 928
Reconguring the Default VLT Settings (Optional) ..................................................................................................928
Connecting a VLT Domain to an Attached Access Device (Switch or Server)..........................................................929
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