XenServer - VMs on a Cisco USC host do not receive the DHCP settings

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Article ID: CTX693220

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Updated On:

Description

When running VMs on a XenServer 8.4 host running on Cisco UCS hardware, the VMs do not receive the DHCP settings.

Resolution

Update your XenServer 8.4 to a level of updates released  on or after these dates:

  • For the Normal channel, July 31, 2025
  • For the Early Access channel, July 24, 2025

Issue/Introduction

When running VMs on a XenServer 8.4 host running on Cisco UCS hardware, the VMs do not receive the DHCP settings. You can work around this issue by using an Open vSwitch rule that matches all traffic on the xapi network bridge and forces all packets to have a VLAN Priority Code Point (PCP) of 0.