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lacp ungroup member-independent {vlt | port-channel port-channel-id}
LACP on VLT ports (on a VLT switch or access device), which are members of the virtual link trunk, is
not brought up until the VLT domain is recognized on the access device.
5. Repeat Steps 1 to 4 on the VLT peer switch to configure the IP address of this switch as the endpoint
of the VLT backup link and to configure the same port channel for the VLT interconnect.
Configuring a VLT Backup Link
To configure a VLT backup link, use the following command.
1. Specify the management interface to be used for the backup link through an out-of-band
management network.
CONFIGURATION mode
interface managementethernet slot/ port
Enter the slot (0-1) and the port (0).
2. Configure an IPv4 address (A.B.C.D) or IPv6 address (X:X:X:X::X) and mask (/x) on the interface.
MANAGEMENT INTERFACE mode
{ip address ipv4-address/ mask | ipv6 address ipv6-address/ mask}
This is the IP address to be configured on the VLT peer with the back-up destination command.
3. Ensure that the interface is active.
MANAGEMENT INTERFACE mode
no shutdown
4. Repeat Steps 1 to 3 on the VLT peer switch.
To set an amount of time, in seconds, to delay the system from restoring the VLT port, use the delay-
restore command at any time. For more information, refer to VLT Port Delayed Restoration.
Configuring a VLT Port Delay Period
To configure a VLT port delay period, use the following commands.
1. Enter VLT-domain configuration mode for a specified VLT domain.
CONFIGURATION mode
vlt domain domain-id
The range of domain IDs from 1 to 1000.
2. Enter an amount of time, in seconds, to delay the restoration of the VLT ports after the system is
rebooted.
CONFIGURATION mode
delay-restore delay-restore-time
The range is from 1 to 1200.
The default is 90 seconds.
Virtual Link Trunking (VLT)
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