Reference Guide
Related
Commands
show vlt statistics — displays statistics on VLT operations.
lacp ungroup member-independent
Prevent possible loop during the bootup of a VLT peer switch or a device that accesses the VLT domain.
Z-Series
Syntax
lacp ungroup member-independent {vlt | port-channel}
Parameters
port-channel Force all LACP port-channel members to become switchports.
vlt Force all VLT LACP members to become switchports.
Defaults Not configured.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 9.0.0.0 Introduced on the Z9000.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.12.0 Added port-channel parameter on the S4810.
Version 8.3.8.0 Introduced on the S4810.
Usage
Information
LACP on the 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.
On the S4810, during boot-up in a stacking configuration, the system must be able to reach the
DHCP server with the boot image and configuration image. During boot-up, only untagged
DHCP requests are sent to the DHCP server to receive an offer on static LAGs between
switches. The DHCP server must be configured to start in BMP mode. If switches are
connected using LACP port-channels like the VLT peer and Top of Rack (ToR), use the port-
channel parameter on the ToR-side configuration to allow member ports of an ungrouped LACP
port-channel to inherit vlan membership of that port channel to ensure untagged packets that
are sent by a VLT peer device reach the DHCP server located on the ToR.
To ungroup the VLT and port-channel configurations, use the no lacp ungroup member
independent command on a VLT port channel, depending on whether the port channel is VLT or
non-VLT.
Example
FTOS (conf)#lacp ungroup member-independent ?
port-channel LACP port-channel members become
switchports
1428