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63 Virtual LANs (VLANs)..............................................................................................................................982
Default VLAN................................................................................................................................................................. 983
Port-Based VLANs........................................................................................................................................................ 983
VLANs and Port Tagging.............................................................................................................................................. 984
Conguration Task List..................................................................................................................................................984
Creating a Port-Based VLAN................................................................................................................................. 984
Assigning Interfaces to a VLAN............................................................................................................................. 985
Moving Untagged Interfaces..................................................................................................................................986
Assigning an IP Address to a VLAN.......................................................................................................................987
Enabling Null VLAN as the Default VLAN.............................................................................................................988
Conguring Native VLANs........................................................................................................................................... 988
64 VLT Proxy Gateway................................................................................................................................. 989
Proxy Gateway in VLT Domains................................................................................................................................... 989
Guidelines for Enabling the VLT Proxy Gateway................................................................................................. 990
Enable VLT Proxy Gateway.....................................................................................................................................991
LLDP Organizational TLV for Proxy Gateway.......................................................................................................991
LLDP VLT Proxy Gateway in a Square VLT Topology..........................................................................................993
Conguring an LLDP VLT Proxy Gateway..................................................................................................................994
Conguring a Static VLT Proxy Gateway................................................................................................................... 994
65 Virtual Link Trunking (VLT)...................................................................................................................... 995
Overview........................................................................................................................................................................ 995
VLT on Core Switches............................................................................................................................................ 996
Multiple VLT..............................................................................................................................................................997
VLT Terminology............................................................................................................................................................ 998
Congure Virtual Link Trunking....................................................................................................................................998
Important Points to Remember............................................................................................................................. 998
Conguration Notes................................................................................................................................................ 999
RSTP and VLT........................................................................................................................................................ 1002
VLT Bandwidth Monitoring................................................................................................................................... 1002
VLT and Stacking................................................................................................................................................... 1002
VLT and IGMP Snooping.......................................................................................................................................1002
VLT Port Delayed Restoration.............................................................................................................................. 1003
PIM-Sparse Mode Support on VLT..................................................................................................................... 1003
RSTP Conguration.....................................................................................................................................................1005
Preventing Forwarding Loops in a VLT Domain................................................................................................. 1005
Sample RSTP Conguration.................................................................................................................................1005
Conguring VLT......................................................................................................................................................1006
Conguring a VLT Interconnect........................................................................................................................... 1006
Enabling VLT and Creating a VLT Domain...........................................................................................................1007
Conguring a VLT Backup Link............................................................................................................................ 1008
Conguring a VLT Port Delay Period................................................................................................................... 1008
Reconguring the Default VLT Settings (Optional) ..........................................................................................1008
Connecting a VLT Domain to an Attached Access Device (Switch or Server)..............................................1009
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