Concept Guide

Assigning a Front-end Port to a Management VRF...........................................................................................1078
View VRF Instance Information............................................................................................................................1079
Assigning an OSPF Process to a VRF Instance..................................................................................................1079
Conguring VRRP on a VRF Instance................................................................................................................. 1079
Conguring Management VRF.............................................................................................................................1080
Conguring a Static Route.....................................................................................................................................1081
Route Leaking VRFs..................................................................................................................................................... 1081
Sample VRF Conguration..........................................................................................................................................1082
Dynamic Route Leaking...............................................................................................................................................1083
Conguring Route Leaking with Filtering............................................................................................................ 1084
Conguring Route Leaking without Filtering Criteria.........................................................................................1085
64 Virtual Link Trunking (VLT).....................................................................................................................1088
Overview.......................................................................................................................................................................1088
VLT on Core Switches............................................................................................................................................1091
VLT Terminology............................................................................................................................................................1091
Important Points to Remember...................................................................................................................................1091
Conguration Notes.....................................................................................................................................................1092
Primary and Secondary VLT Peers............................................................................................................................ 1095
RSTP and VLT.............................................................................................................................................................. 1095
VLT Bandwidth Monitoring.........................................................................................................................................1095
VLT and High Availability............................................................................................................................................. 1096
VLT and IGMP Snooping.............................................................................................................................................1096
VLT and Stacking......................................................................................................................................................... 1096
VLT IPv6........................................................................................................................................................................1096
VLT Port Delayed Restoration.................................................................................................................................... 1096
PIM-Sparse Mode Support on VLT............................................................................................................................1097
VLT Routing ................................................................................................................................................................. 1098
Spanned VLANs..................................................................................................................................................... 1098
VLT Unicast Routing..............................................................................................................................................1098
VLT Multicast Routing...........................................................................................................................................1099
Non-VLT ARP Sync...................................................................................................................................................... 1100
RSTP Conguration......................................................................................................................................................1100
Preventing Forwarding Loops in a VLT Domain................................................................................................... 1101
Sample RSTP Conguration...................................................................................................................................1101
Conguring VLT.............................................................................................................................................................1102
Conguring a VLT Interconnect............................................................................................................................ 1102
Enabling VLT and Creating a VLT Domain............................................................................................................1103
Conguring a VLT Backup Link............................................................................................................................. 1104
Conguring a VLT Port Delay Period....................................................................................................................1104
Reconguring the Default VLT Settings (Optional) ...........................................................................................1105
Connecting a VLT Domain to an Attached Access Device (Switch or Server).............................................. 1105
Conguring a VLT VLAN Peer-Down (Optional)................................................................................................ 1106
Conguring Enhanced VLT (eVLT) (Optional).....................................................................................................1107
VLT Sample Conguration..................................................................................................................................... 1109
eVLT Conguration Example........................................................................................................................................ 1112
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