Users Guide

!
interface Port-channel 20
no ip address
switchport
vlan-stack trunk
vlt-peer-lag port-channel 20
no shutdown
Dell#
Congure the VLAN as a VLAN-Stack VLAN and add the VLT LAG as members to the VLAN
Dell(conf)#interface vlan 50
Dell(conf-if-vl-50)#vlan-stack compatible
Dell(conf-if-vl-50-stack)#member port-channel 10
Dell(conf-if-vl-50-stack)#member port-channel 20
Dell(conf-if-vl-50-stack)#
Dell#show running-config interface vlan 50
!
interface Vlan 50
vlan-stack compatible
member Port-channel 10,20
shutdown
Dell#
Verify that the Port Channels used in the VLT Domain are Assigned to the VLAN-Stack VLAN
Dell#show vlan id 50
Codes: * - Default VLAN, G - GVRP VLANs, R - Remote Port Mirroring VLANs, P - Primary, C -
Community, I - Isolated
O - Openflow
Q: U - Untagged, T - Tagged
x - Dot1x untagged, X - Dot1x tagged
o - OpenFlow untagged, O - OpenFlow tagged
G - GVRP tagged, M - Vlan-stack
i - Internal untagged, I - Internal tagged, v - VLT untagged, V - VLT tagged
NUM Status Description Q Ports
50 Active M Po10(Gi 1/8)
M Po20(Gi 1/20)
V Po1(Gi 1/30-32)
Dell#
IPv6 Peer Routing in VLT Domains Overview
VLT enables the physical links between two devices that are called VLT nodes or peers, and within a VLT domain, to be considered as a
single logical link to external devices that are connected using LAG bundles to both the VLT peers. This capability enables redundancy
without the implementation of Spanning tree protocol (STP), thereby providing a loop-free network with optimal bandwidth utilization.
IPv6 peer routing is supported on all the platforms that are compatible with IPv6 routing and support VLT. This functionality performs the
following operations:
• Forwarding control trac to the correct VLT node when the control trac reaches the wrong VLT node due to hashing at the VLT LAG
level on the ToR.
• Routing the data trac which is destined to peer VLT node.
• Synchronizing neighbor entries learned on VLT VLAN interfaces between the primary and secondary node.
• Synchronizing the IP address of VLT VLAN interfaces between the VLT primary node and secondary node.
• Performing routing on behalf of peer VLT nodes for a congured time period when a peer VLT node goes down.
When you congure Layer 3 VLT peer routing using the peer-routing command in VLT DOMAIN mode, it applies for both IPv4 and
IPv6 trac in VLT domains. Layer 3 VLT provides a higher resiliency at the Layer 3 forwarding level. Routed VLT allows you to replace
VRRP with routed VLT to route the trac from the Layer 2 access nodes. With neighbor discovery (ND) synchronization, both the VLT
nodes perform Layer 3 forwarding on behalf of each other.
Virtual Link Trunking (VLT)
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