API Guide

Table Of Contents
Configuring Route Leaking without Filtering Criteria..............................................................................................967
64 Virtual Link Trunking (VLT)..................................................................................................... 969
Overview............................................................................................................................................................................ 969
VLT on Core Switches.................................................................................................................................................971
VLT Terminology................................................................................................................................................................ 971
Important Points to Remember........................................................................................................................................971
Configuration Notes..........................................................................................................................................................972
Primary and Secondary VLT Peers................................................................................................................................. 974
RSTP and VLT................................................................................................................................................................... 975
VLT Bandwidth Monitoring..............................................................................................................................................975
VLT and High Availability..................................................................................................................................................975
VLT and IGMP Snooping..................................................................................................................................................975
VLT and Stacking.............................................................................................................................................................. 976
VLT IPv6.............................................................................................................................................................................976
VLT Port Delayed Restoration.........................................................................................................................................976
PIM-Sparse Mode Support on VLT................................................................................................................................ 976
VLT Routing ...................................................................................................................................................................... 978
VLT Unicast Routing................................................................................................................................................... 978
VLT Multicast Routing................................................................................................................................................ 979
Non-VLT ARP Sync..........................................................................................................................................................980
RSTP Configuration..........................................................................................................................................................980
Preventing Forwarding Loops in a VLT Domain......................................................................................................980
Sample RSTP Configuration...................................................................................................................................... 980
Configuring VLT................................................................................................................................................................. 981
Configuring a VLT Interconnect.................................................................................................................................981
Enabling VLT and Creating a VLT Domain............................................................................................................... 982
Configuring a VLT Backup Link................................................................................................................................. 982
Configuring a VLT Port Delay Period........................................................................................................................983
Reconfiguring the Default VLT Settings (Optional) .............................................................................................. 983
Connecting a VLT Domain to an Attached Access Device (Switch or Server)..................................................984
Configuring a VLT VLAN Peer-Down (Optional).................................................................................................... 984
Configuring Enhanced VLT (eVLT) (Optional)........................................................................................................985
VLT Sample Configuration......................................................................................................................................... 986
eVLT Configuration Example...........................................................................................................................................989
PIM-Sparse Mode Configuration Example..................................................................................................................... 991
Verifying a VLT Configuration......................................................................................................................................... 992
Additional VLT Sample Configurations...........................................................................................................................995
Troubleshooting VLT.........................................................................................................................................................997
Reconfiguring Stacked Switches as VLT.......................................................................................................................998
Specifying VLT Nodes in a PVLAN.................................................................................................................................998
Configuring a VLT VLAN or LAG in a PVLAN...............................................................................................................1001
Creating a VLT LAG or a VLT VLAN........................................................................................................................1001
Associating the VLT LAG or VLT VLAN in a PVLAN............................................................................................ 1002
Proxy ARP Capability on VLT Peer Nodes................................................................................................................... 1002
VLT Nodes as Rendezvous Points for Multicast Resiliency.......................................................................................1003
Configuring VLAN-Stack over VLT...............................................................................................................................1004
Configure BFD in VLT Domain.......................................................................................................................................1006
Sample BFD configuration in VLT domain..............................................................................................................1006
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