Users Guide

Chapter 58: VLT Proxy Gateway................................................................................................... 742
Proxy Gateway in VLT Domains...................................................................................................................................... 742
Configuring an LLDP VLT Proxy Gateway.....................................................................................................................746
Configuring a Static VLT Proxy Gateway...................................................................................................................... 746
Chapter 59: Virtual Link Trunking (VLT)........................................................................................ 747
Overview.............................................................................................................................................................................747
VLT on Core Switches................................................................................................................................................748
Enhanced VLT..............................................................................................................................................................748
VLT Terminology............................................................................................................................................................... 749
Configure Virtual Link Trunking....................................................................................................................................... 749
Important Points to Remember................................................................................................................................. 749
Configuration Notes....................................................................................................................................................750
Primary and Secondary VLT Peers........................................................................................................................... 753
RSTP and VLT............................................................................................................................................................. 753
VLT Bandwidth Monitoring........................................................................................................................................ 754
VLT and Stacking........................................................................................................................................................ 754
VLT and IGMP Snooping............................................................................................................................................ 754
VLT IPv6.......................................................................................................................................................................754
VLT Port Delayed Restoration................................................................................................................................... 754
PIM-Sparse Mode Support on VLT.......................................................................................................................... 755
VLT Routing ................................................................................................................................................................ 756
Non-VLT ARP Sync.................................................................................................................................................... 758
RSTP Configuration.......................................................................................................................................................... 758
Preventing Forwarding Loops in a VLT Domain...................................................................................................... 758
Sample RSTP Configuration...................................................................................................................................... 758
Configuring VLT...........................................................................................................................................................759
PVST+ Configuration........................................................................................................................................................767
eVLT Configuration Example........................................................................................................................................... 768
PIM-Sparse Mode Configuration Example......................................................................................................................771
Verifying a VLT Configuration...........................................................................................................................................771
Additional VLT Sample Configurations............................................................................................................................774
Troubleshooting VLT.........................................................................................................................................................776
Reconfiguring Stacked Switches as VLT........................................................................................................................777
Specifying VLT Nodes in a PVLAN..................................................................................................................................777
Configuring a VLT VLAN or LAG in a PVLAN................................................................................................................780
Creating a VLT LAG or a VLT VLAN.........................................................................................................................780
Associating the VLT LAG or VLT VLAN in a PVLAN...............................................................................................781
Proxy ARP Capability on VLT Peer Nodes.....................................................................................................................782
VLT Nodes as Rendezvous Points for Multicast Resiliency........................................................................................ 783
Configuring VLAN-Stack over VLT.................................................................................................................................783
IPv6 Peer Routing in VLT Domains Overview............................................................................................................... 786
Chapter 60: Virtual Routing and Forwarding (VRF)......................................................................... 791
VRF Overview.................................................................................................................................................................... 791
VRF Configuration Notes................................................................................................................................................. 792
DHCP............................................................................................................................................................................ 794
VRF Configuration.............................................................................................................................................................794
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