Users Guide

Conguring VLT
VLT requires that you enable the feature and then congure the same VLT domain, backup link, and VLT interconnect on both peer
switches. To congure VLT, use the following procedure.
Prerequisites: Before you begin, make sure that both VLT peer switches are running the same Dell Networking OS version and are
congured for RSTP as described in RSTP Conguration. For VRRP operation, ensure that you congure VRRP groups and L3 routing on
each VLT peer as described in
VLT and VRRP interoperability in the Conguration Notes section.
1 Congure the VLT interconnect for the VLT domain. The primary and secondary switch roles in the VLT domain are automatically
assigned after you congure both sides of the VLTi.
NOTE: If you use a third-party ToR unit, to avoid potential problems if you reboot the VLT peers, Dell recommends using
static LAGs on the VLTi between VLT peers.
2 Enable VLT and create a VLT domain ID. VLT automatically selects a system MAC address.
3 Congure a backup link for the VLT domain.
4 (Optional) Manually recongure the default VLT settings, such as the MAC address and VLT primary/ secondary roles.
5 Connect the peer switches in a VLT domain to an attached access device (switch or server).
Conguring a VLT Interconnect
To congure a VLT interconnect, follow these steps.
1 Congure the port channel for the VLT interconnect on a VLT switch and enter interface conguration mode.
CONFIGURATION mode
interface port-channel id-number
Enter the same port-channel number congured with the peer-link port-channel command as described in Enabling VLT and
Creating a VLT Domain.
NOTE
: To be included in the VLTi, the port channel must be in Default mode (no switchport or VLAN assigned).
2 Remove an IP address from the interface.
INTERFACE PORT-CHANNEL mode
no ip address
3 Add one or more port interfaces to the port channel.
INTERFACE PORT-CHANNEL mode
channel-member interface
interface: specify one of the following interface types:
• 1-Gigabit Ethernet: Enter gigabitethernet slot/port.
• 10-Gigabit Ethernet: Enter tengigabitethernet slot/port.
• 40-Gigabit Ethernet: Enter fortyGigE slot/port.
4 Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
5 Repeat Steps 1 to 4 on the VLT peer switch to congure the VLT interconnect.
Virtual Link Trunking (VLT)
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