Users Guide

VLT DOMAIN CONFIGURATION mode
peer-down-vlan vlan interface number
Configuring Enhanced VLT (eVLT) (Optional)
To configure enhanced VLT (eVLT) between two VLT domains on your network, use the following procedure.
For a sample configuration, refer to eVLT Configuration Example. To set up the VLT domain, use the following commands.
1. Configure the port channel to be used for the VLT interconnect on a VLT switch and enter interface configuration mode.
CONFIGURATION mode
interface port-channel id-number
Enter the same port-channel number configured with the peer-link port-channel command in the Enabling VLT and Creating
a VLT Domain.
2. 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:
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port[/subport] information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
3. Enter VLT-domain configuration mode for a specified VLT domain.
CONFIGURATION mode
vlt domain domain-id
The range of domain IDs is from 1 to 1000.
4. Enter the port-channel number that acts as the interconnect trunk.
VLT DOMAIN CONFIGURATION mode
peer-link port-channel id-number
5. Configure the IP address of the management interface on the remote VLT peer to be used as the endpoint of the VLT backup link for
sending out-of-band hello messages.
VLT DOMAIN CONFIGURATION mode
back-up destination ip-address [interval seconds]
You can optionally specify the time interval used to send hello messages. The range is from 1 to 5 seconds.
6. When you create a VLT domain on a switch, Dell Networking OS automatically creates a VLT-system MAC address used for internal
system operations.
VLT DOMAIN CONFIGURATION mode
system-mac mac-address mac-address
To explicitly configure the default MAC address for the domain by entering a new MAC address, use the system-mac command. The
format is aaaa.bbbb.cccc.
Also reconfigure the same MAC address on the VLT peer switch.
Use this command to minimize the time required for the VLT system to synchronize the default MAC address of the VLT domain on
both peer switches when one peer switch reboots.
7. When you create a VLT domain on a switch, Dell Networking OS automatically assigns a unique unit ID (0 or 1) to each peer switch.
VLT DOMAIN CONFIGURATION mode
unit-id {0 | 1}
The unit IDs are used for internal system operations.
To explicitly configure the default values on each peer switch, use the unit-id command.
Configure a different unit ID (0 or 1) on each peer switch.
Use this command to minimize the time required for the VLT system to determine the unit ID assigned to each peer switch when one
peer switch reboots.
8. Configure enhanced VLT. Configure the port channel to be used for the VLT interconnect on a VLT switch and enter interface
configuration mode.
CONFIGURATION mode
840
Virtual Link Trunking (VLT)