Version
Description
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 VLT, are not brought up
until the VLT domain is recognized on the access device.
During boot-up in a stacking configuration, the system must be able to reach the DHCP server with the boot
image and configuration image. To receive an offer on static LAGs between switches, only untagged DHCP
requests are sent to the DHCP server. Configure the DHCP server to start in BMP mode.
If the switches are connected using LACP port-channels (for example, the VLT peer and top of rack [ToR]), use
the
port-channel
option on the ToR-side configuration to allow member ports of an ungrouped LACP port-
channel to inherit VLAN membership of that port channel. This ensures untagged VLT peer device packets reach
the DHCP server on the ToR.
To ungroup the VLT and port-channel configurations, use the
no lacp ungroup member independent
command on a VLT port channel.
Example
Dell(conf)#lacp ungroup member-independent ?
port-channel LACP port-channel members become switchports
vlt All VLT LACP members become switchports
multicast peer-routing timeout
To retain synced multicast routes or synced multicast outgoing interface (OIF) after a VLT peer node failure, configure the timeout value for
a VLT node.
Syntax
multicast peer-routing timeout
value
To restore the default value, use the
no multicast peer-routing timeout
command.
Parameters
value
Enter the timeout value (in seconds). The range is from 1 to 1200. The default is 150.
Command Modes
VLT DOMAIN (conf-vlt-domain)
Command History
This guide is platform-specific. For command information about other platforms, see the relevant
Dell Networking
OS Command Line Reference Guide
.
Version
Description
9.10(0.0)
Introduced on the S6100–ON.
9.8(1.0)
Introduced on the Z9100–ON.
1674
Virtual Link Trunking (VLT)