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In the following sample VLT conguration steps, VLT peer 1 is S5000-2, VLT peer 2 is S5000-4, and the ToR is S60-1.
NOTE: To avoid potential problems if the VLT peers are rebooted, if you use a third-party ToR unit, Dell Networking recommends
using static LAGs with VLT peers.
Congure the VLT domain with the same ID in VLT peer 1 and VLT peer 2.
S5000-2(conf)#vlt domain 5
S5000-2(conf-vlt-domain)#
S5000-4(conf)#vlt domain 5
S5000-4(conf-vlt-domain)#
Congure the VLTi between VLT peer 1 and VLT peer 2.
1 P/Static LAG can be congured between the peer units (not shown).
2 Congure the peer-link port-channel in the VLT domains of each peer unit.
S5000-2(conf)#interface port-channel 1
S5000-2(conf-if-po-1)#channel-member TenGigabitEthernet 0/4-7
S5000-4(conf)#interface port-channel 1
S5000-4(conf-if-po-1)#channel-member TenGigabitEthernet 0/4-7
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.
S5000-2#show running-config vlt
!
vlt domain 5
peer-link port-channel 1
back-up destination 10.11.206.58
S5000-2#
S5000-2# show interfaces managementethernet 0/0
Internet address is 10.11.206.43/16
S5000-4#show running-config vlt
!
vlt domain 5
peer-link port-channel 1
back-up destination 10.11.206.43
S5000-4#
S5000-4#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 0/40 in VLT peer 1 is
connected to Te 0/48 of TOR and port Te 0/18 in VLT peer 2 is connected to Te 0/50 of TOR.
1 Congure the static LAG/LACP between 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 highlighted
vlt-peer-lag port-channel 2 indicates that port-channel 2 is the port-channel id congured in VLT peer 2).
S5000-2#show running-config interface tengigabitethernet 0/40
!
interface TenGigabitEthernet 0/40
no ip address
!
port-channel-protocol LACP
port-channel 2 mode active
no shutdown
S5000-2#
configuring VLT peer lag in VLT
Virtual Link Trunking (VLT)
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