Dell Force10 S4810P

Virtual Link Trunking (VLT) | 1079
Use the peer-down-vlan parameter to configure the VLAN where a VLT peer will forward received packets
over the VLTi from an adjacent VLT peer that is down. When a VLT peer with BMP reboots, untagged
DHCP discover packets are sent to the peer over the VLTi. Using this configuration ensures the DHCP
discover packets are forwarded to the VLAN that has the DHCP server.
Use the following procedure to configure enhanced VLT between two VLT domains on your network.
Refer to eVLT Configuration Example for a sample configuration.
(Optional) Configure a VLT VLAN peer-down
Step Task Command Syntax Command Mode
1 Enter VLT-domain configuration mode for a specified
VLT domain.
Range of domain IDs: 1 to 1000.
vlt domain domain-id
CONFIGURATION
2 Enter the port-channel number that will act as the
interconnect trunk.
Range: 1 to 128.
peer-link port-channel
id-number
VLT DOMAIN
CONFIGURATION
3 Enter the VLAN ID number of the VLAN where the
VLT forwards packets received on the VLTi from an
adjacent peer that is down.
Range: 1 to 4094.
peer-link port-channel
id-number peer-down-vlan
vlan interface number
VLT DOMAIN
CONFIGURATION
(Optional) Configure Enhanced VLT (eVLT)
Step Task Command Syntax Command Mode
Set up the VLT domain.
1 Configure the port channel to be used for the VLT
interconnect on a VLT switch and enter interface
configuration mode.
Enter the same port-channel number configured with the
peer-link port-channel command.
interface port-channel
id-number
CONFIGURATION
2 Add one or more port interfaces to the port channel.
interface specifies one of the following interface types:
1-Gigabit Ethernet: Enter gigabitethernet slot/port.
10-Gigabit Ethernet: Enter tengigabitethernet slot/port.
channel-member interface
INTERFACE
PORT-CHANNEL
3 Enter VLT-domain configuration mode for a specified
VLT domain.
Range of domain IDs: 1 to 1000.
vlt domain domain-id
CONFIGURATION
4 Enter the port-channel number that will act as the
interconnect trunk.
Range: 1 to 128.
peer-link port-channel
id-number
VLT DOMAIN
CONFIGURATION