topic Re: DHCP NSX-Overlay in VMware Cloud Foundation Discussions

DHCP NSX-Overlay

santunezlenovo — Sun, 06 Aug 2023 17:55:44 GMT

Hello Guys

In a VCF cluster that is stretched, the Dell switch that delivered DHCP to the nodes had a 7-day lease policy.

Subsequently, the nodes are not receiving DHCP, the switches were changed to infinite lease, but the problem persists

the following has been run on each node but is not receiving DHCP

esxcli network ip interface set -e false -i vmk10 ; esxcli network ip interface set -e true -i vmk10

esxcli network ip interface set -e false -i vmk11 ; esxcli network ip interface set -e true -i vmk11

A support case was opened, but we don't have an answer yet, and I need to know if someone knows how to solve this problem.

We have rebooted the nodes, switch, etc, but the problem persists.

I would appreciate if someone could give me an idea what could be happening.

VCF version is 5.0, and ESXi 8.0

Thanks for your comments

Regards

Sebastian

Re: DHCP NSX-Overlay

Brisk — Mon, 07 Aug 2023 05:43:07 GMT

Did you define a DHCP relay in your Segments? This is needed to forward the DHCP requests to those switches.

Alternatively, you could run DHCP inside of your NSX environment itself.

Re: DHCP NSX-Overlay

CyberNils — Mon, 07 Aug 2023 07:12:50 GMT

Try rebooting one ESXi host and see if that helps.

Try putting a laptop in the same VLAN and see if that can get a DHCP config.

Re: DHCP NSX-Overlay

santunezlenovo — Tue, 08 Aug 2023 14:13:44 GMT

Hello

DHCP is being delivered by a Dell switch.

interface vlan2500
description edge-vtep
no shutdown
mtu 9216
ip vrf forwarding acity
ip address 192.168.35.253/24
!
vrrp-group 250
virtual-address 192.168.35.254
!

ip dhcp server
no disable
!
pool edge-vtep
lease inifinite
network 192.168.35.0/24
default-router 192.168.35.254
range 192.168.35.101 192.168.35.200
!

I understand that the recommendation is that there be a dhcp server in the network and that only the switch do a dhcp relay?

I have rebooted the nodes, but they still do not accept IP.

Thanks

SAN