Users Guide

NOTE: If you use a third-party ToR unit, Dell Networking recommends using static LAGs with VLT peers to avoid
potential problems if you reboot the VLT peers.
Congure the VLT domain with the same ID in VLT peer 1 and VLT peer 2.
s4810-2(conf)#vlt domain 5
s4810-2(conf-vlt-domain)#
Dell-4(conf)#vlt domain 5
Dell-4(conf-vlt-domain)#
Congure the VLTi between VLT peer 1 and VLT peer 2.
1. You can congure the LACP/static LAG between the peer units (not shown).
2. Congure the peer-link port-channel in the VLT domains of each peer unit.
Dell-2(conf)#interface port-channel 1
Dell-2(conf-if-po-1)#channel-member TenGigabitEthernet 1/4-7
Dell-4(conf)#interface port-channel 1
Dell-4(conf-if-po-1)#channel-member TenGigabitEthernet 1/4-7
Congure the backup link between the VLT peer units.
1. Congure the peer 2 management ip/ interface ip for which connectivity is present in VLT peer 1.
2. Congure the peer 1 management ip/ interface ip for which connectivity is present in VLT peer 2.
Dell-2#show running-config vlt
!
vlt domain 5
peer-link port-channel 1
back-up destination 10.11.206.58
Dell-2# show interfaces managementethernet 0/0
Internet address is 10.11.206.43/16
Dell-4#show running-config vlt
!
vlt domain 5
peer-link port-channel 1
back-up destination 10.11.206.43
Dell-4#
Dell-4#show running-config interface managementethernet 0/0
ip address 10.11.206.58/16
no shutdown
Congure the VLT links between VLT peer 1 and VLT peer 2 to the Top of Rack unit. In the following example, port Te 1/4 in VLT peer
1 is connected to Te 1/8 of TOR and port Te 1/18 in VLT peer 2 is connected to Te 1/30 of TOR.
1. Congure the static LAG/LACP between the ports connected from VLT peer 1 and VLT peer 2 to the Top of Rack unit.
2. Congure the VLT peer link port channel id in VLT peer 1 and VLT peer 2.
3. In the Top of Rack unit, congure LACP in the physical ports (shown for VLT peer 1 only. Repeat steps for VLT peer 2. The bold
vlt-peer-lag port-channel 2 indicates that port-channel 2 is the port-channel id congured in VLT peer 2).
Dell-2#show running-config interface tengigabitethernet 1/4
!
interface TenGigabitEthernet 1/4
no ip address
!
port-channel-protocol LACP
port-channel 2 mode active
no shutdown
configuring VLT peer lag in VLT
Dell-2#show running-config interface port-channel 2
!
interface Port-channel 2
908
Virtual Link Trunking (VLT)