Users Guide

Table Of Contents

The following describes the VLT upgrade process:

In this example topology:

● VLT-Peer1 and VLT-Peer2 are leaf nodes that are connected to the spine switch through port channel 10.

● Host1 is connected to both the VLT peer nodes through port channel 20.

● Host2 uses switch-independent NIC teaming.

● Switch1 is connected to the VLT peer nodes through port channel 30.

Important notes

● The ports that are connected to Host2 are not part of a VLT port channel. If you have this type of deployment, configure the

delay-restore for orphan ports feature on the VLT nodes to reduce traffic loss during upgrade or reload.

● When you upgrade one of the VLT peer nodes (for example, VLT-Peer1), the forwarding plane continues to forward the

traffic to the other node (VLT-Peer2).

●

If you are upgrading VLT nodes from 10.5.0.5 or previous release to 10.5.1.x or later release, see:

○ VLT upgrade with minimal loss for upgrades from 10.5.0.5 or earlier to 10.5.1.1 or later releases.

○ VLT upgrade with minimal loss in a VLT or VXLAN topology if network statements are used to advertise BGP prefixes.

● You must not make any configuration changes when the VLT peer nodes are running different versions of the software.

1. Download the new software image on both the VLT peer nodes (VLT-Peer 1 and VLT-Peer 2) from the Dell Support Site.

Extract the bin files from the tar file, and save the file in EXEC mode. Download the extracted bin file to the OS10 switch