Reference Guide

The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
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.
8.3.12.0 Added port-channel parameter on the S4810.
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.
During BMP reload, the ToR device or the device connected to the VLT port-
channel must reach the DHCP server with the boot and configuration images.
During boot-up, only untagged DHCP requests are sent to the DHCP server to
receive an offer. 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. The DHCP server must
be configured to start in BMP mode. If switches are connected using LACP port-
channels like the VLT peer and 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.
Example
Dell(conf)#lacp ungroup member-independent ?
port-channel LACP port-channel members become
switchports
vlt All VLT LACP members
become switchports
2046
Virtual Link Trunking (VLT)