Service Manual
Guidelines for Conguring Multipoint Receive-Only Tunnels........................................................................................... 774
Multipoint Receive-Only Type and IP Unnumbered Interfaces for Tunnels...................................................................... 774
51 Upgrade Procedures.................................................................................................. 775
Get Help with Upgrades................................................................................................................................................. 775
52 Virtual LANs (VLANs)................................................................................................776
Default VLAN................................................................................................................................................................. 776
Port-Based VLANs......................................................................................................................................................... 777
VLANs and Port Tagging................................................................................................................................................ 777
Conguration Task List................................................................................................................................................... 778
Creating a Port-Based VLAN....................................................................................................................................778
Assigning Interfaces to a VLAN................................................................................................................................ 779
Moving Untagged Interfaces....................................................................................................................................780
Assigning an IP Address to a VLAN........................................................................................................................... 781
Conguring Native VLANs.............................................................................................................................................. 781
Enabling Null VLAN as the Default VLAN....................................................................................................................... 782
53 VLT Proxy Gateway................................................................................................... 783
Proxy Gateway in VLT Domains......................................................................................................................................783
Guidelines for Enabling the VLT Proxy Gateway....................................................................................................... 784
Enabling the VLT Proxy Gateway..............................................................................................................................785
LLDP Organizational TLV for Proxy Gateway........................................................................................................... 785
Sample Congurations for LLDP VLT Proxy Gateway...............................................................................................786
Sample Congurations for Static VLT Proxy Gateway.............................................................................................. 786
Sample Scenario for VLT Proxy Gateway..................................................................................................................787
Conguring a Static VLT Proxy Gateway........................................................................................................................788
Conguring an LLDP VLT Proxy Gateway...................................................................................................................... 788
54 Virtual Link Trunking (VLT)........................................................................................790
Overview........................................................................................................................................................................790
VLT on Core Switches...............................................................................................................................................791
Enhanced VLT...........................................................................................................................................................791
VLT Terminology.............................................................................................................................................................792
Congure Virtual Link Trunking.......................................................................................................................................792
Important Points to Remember................................................................................................................................ 792
Conguration Notes................................................................................................................................................. 794
Primary and Secondary VLT Peers........................................................................................................................... 796
RSTP and VLT.......................................................................................................................................................... 797
VLT Bandwidth Monitoring....................................................................................................................................... 797
VLT and IGMP Snooping.......................................................................................................................................... 797
VLT IPv6...................................................................................................................................................................797
VLT Port Delayed Restoration.................................................................................................................................. 798
PIM-Sparse Mode Support on VLT.......................................................................................................................... 798
VLT Routing ............................................................................................................................................................ 800
Non-VLT ARP Sync..................................................................................................................................................802
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