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Table Of Contents
Configuring Route Leaking without Filtering Criteria........................................................................................861
Configuring Route Leaking with Filtering............................................................................................................863
Chapter 60: Virtual Link Trunking (VLT)....................................................................................866
Overview...........................................................................................................................................................................866
VLT Terminology....................................................................................................................................................... 868
Layer-2 Traffic in VLT Domains.............................................................................................................................869
Interspersed VLANs..................................................................................................................................................870
VLT on Core Switches............................................................................................................................................. 870
Enhanced VLT.............................................................................................................................................................871
Configure Virtual Link Trunking................................................................................................................................... 872
Important Points to Remember............................................................................................................................. 872
Configuration Notes................................................................................................................................................. 873
Primary and Secondary VLT Peers....................................................................................................................... 876
RSTP and VLT............................................................................................................................................................876
VLT Bandwidth Monitoring..................................................................................................................................... 876
VLT and IGMP Snooping......................................................................................................................................... 877
VLT IPv6...................................................................................................................................................................... 877
VLT Port Delayed Restoration................................................................................................................................877
PIM-Sparse Mode Support on VLT.......................................................................................................................877
VLT Routing ...............................................................................................................................................................879
Non-VLT ARP Sync.................................................................................................................................................. 882
RSTP Configuration........................................................................................................................................................882
Preventing Forwarding Loops in a VLT Domain................................................................................................ 882
Sample RSTP Configuration...................................................................................................................................883
Configuring VLT........................................................................................................................................................ 883
PVST+ Configuration......................................................................................................................................................891
Peer Routing Configuration Example......................................................................................................................... 892
Dell-1 Switch Configuration.................................................................................................................................... 893
Dell-2 Switch Configuration....................................................................................................................................897
R1 Configuration........................................................................................................................................................900
Access Switch A1 Configurations and Verification............................................................................................901
eVLT Configuration Example........................................................................................................................................ 901
PIM-Sparse Mode Configuration Example............................................................................................................... 904
Verifying a VLT Configuration..................................................................................................................................... 904
Additional VLT Sample Configurations...................................................................................................................... 907
Troubleshooting VLT......................................................................................................................................................909
Specifying VLT Nodes in a PVLAN..............................................................................................................................910
Configuring a VLT VLAN or LAG in a PVLAN........................................................................................................... 913
Creating a VLT LAG or a VLT VLAN..................................................................................................................... 914
Associating the VLT LAG or VLT VLAN in a PVLAN.........................................................................................914
Proxy ARP Capability on VLT Peer Nodes................................................................................................................ 915
VLT Nodes as Rendezvous Points for Multicast Resiliency..................................................................................916
Configuring VLAN-Stack over VLT............................................................................................................................. 917
IPv6 Peer Routing in VLT Domains Overview.......................................................................................................... 919
Chapter 61: VLT Proxy Gateway.................................................................................................924
Proxy Gateway in VLT Domains.................................................................................................................................. 924
LLDP VLT Proxy Gateway in a Square VLT Topology......................................................................................927
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