57 Virtual LANs (VLANs)......................................................................................913
Default VLAN.....................................................................................................................................913
Port-Based VLANs.............................................................................................................................914
VLANs and Port Tagging...................................................................................................................914
Configuration Task List.....................................................................................................................915
Creating a Port-Based VLAN.......................................................................................................915
Assigning Interfaces to a VLAN...................................................................................................916
Moving Untagged Interfaces.......................................................................................................917
Assigning an IP Address to a VLAN.............................................................................................918
Configuring Native VLANs................................................................................................................919
Enabling Null VLAN as the Default VLAN.........................................................................................920
58 Virtual Routing and Forwarding (VRF)....................................................... 921
VRF Overview....................................................................................................................................921
VRF Configuration Notes..................................................................................................................922
DHCP...........................................................................................................................................925
VRF Configuration.............................................................................................................................925
Load VRF CAM.............................................................................................................................925
Creating a Non-Default VRF Instance........................................................................................925
Assigning an Interface to a VRF..................................................................................................925
Assigning a Front-end Port to a Management VRF...................................................................926
View VRF Instance Information..................................................................................................926
Assigning an OSPF Process to a VRF Instance...........................................................................927
Configuring VRRP on a VRF Instance.........................................................................................927
Configuring Management VRF...................................................................................................928
Configuring a Static Route.........................................................................................................928
Sample VRF Configuration...............................................................................................................929
Route Leaking VRFs..........................................................................................................................936
Dynamic Route Leaking...................................................................................................................936
Configuring Route Leaking without Filtering Criteria................................................................936
Configuring Route Leaking with Filtering..................................................................................939
59 Virtual Link Trunking (VLT).......................................................................... 942
Overview...........................................................................................................................................942
VLT on Core Switches................................................................................................................943
Enhanced VLT.............................................................................................................................943
VLT Terminology..............................................................................................................................944
Configure Virtual Link Trunking.......................................................................................................945
Important Points to Remember.................................................................................................945
Configuration Notes...................................................................................................................946
Primary and Secondary VLT Peers.............................................................................................949