Dell Force10 Z9000 - Peer-Link Port-Channel

vlt All VLT LACP members
become switchports
Defaults Not configured.
Command Modes CONFIGURATION
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 a completely un-
grouped 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.
Command History
Version 9.0.0.0 Introduced on the Z9000.
Version 8.3.12.0 Added port-channel parameter on the S4810.
Version 8.3.8.0 Introduced on the S4810.
peer-link port-channel
Configure the specified port channel as the chassis interconnect trunk between VLT peers in the domain.
Z-Series, S4810
Syntax
peer-link port-channel port-channel-number {peer-down-vlan vlan
id}
Parameters
port-channel-
number
Enter the port-channel number that acts as the interconnect trunk.
peer-down-vlan
vlan id
Enter the keyword peer-down-vlan followed by a VLAN ID to
configure the VLAN that the VLT peer link uses when the VLT peer is
down.
Defaults Not configured.
Command Modes VLT DOMAIN
Command History
Version 9.0.0.0 Introduced on the Z9000.
Version 8.3.12.0 Added support for the peer-down-vlan parameter.
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