Users Guide

Usage Information
When you create a VLT domain on a switch, the Dell EMC Networking OS automatically creates a VLT-system
MAC address used for internal system operations.
To recongure the default MAC address for the domain, use the system-mac command. The MAC address must
be in the nn:nn:nn:nn:nn:nn format. Also recongure the same MAC address on the VLT peer switch.
unit-id
Congure the default unit ID of a VLT peer switch.
Syntax
unit-id [0 | 1]
Parameters
0 | 1 Congure the default unit ID of a VLT peer switch. Enter 0 for the rst peer. Enter 1 for
the second peer.
Defaults Automatically assigned based on the MAC address of each VLT peer. The peer with the lower MAC address is
assigned unit 0; the peer with the higher MAC address is assigned unit 1.
Command Modes VLT DOMAIN
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.5(0.1) Introduced on the Z9500.
9.2(0.0) Introduced on the M I/O Aggregator. This command is supported in Programmable-Mux
(PMUX) mode only.
9.0.2.0 Introduced on the S6000.
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.8.0 Introduced on the S4810.
Usage Information
When you create a VLT domain on a switch, the Dell EMC Networking OS automatically assigns a unique unit ID (0
or 1) to each peer switch. The unit IDs are used for internal system operations. To explicitly congure the unit ID of
a VLT peer, use the unit-id command. Congure a dierent unit ID (0 or 1) on each peer switch.
This command minimizes the time required for the VLT system to determine the unit ID assigned to each peer
switch when one peer reboots.
1958 Virtual Link Trunking (VLT)