NSX-T DHCP relayed packets fail to reach the DHCP server

Products

• VMware NSX
• VMware NSX-T Data Center

Issue/Introduction

NSX-T DHCP relayed packets fail to reach the DHCP server if distant of 10 or more routing hops.

Environment

• VMware NSX-T Data Center
• VMware NSX-T
• VMware NSX-T Data Center 2.x

Cause

This issue occurs because DHCP relayed packets have a Time to live (TTL) of 10. If the DHCP server is more than 10 routing hops away, DHCP relay packets are dropped before they can reach it.

Resolution

Resolved in VMware NSX-T Data Center 2.5.0.

Note: In NSX-T Data Center 2.5.0, the DHCP relayed packet have a TTL of 64.