I have installed 7.2/7.3 version on Asus X99-WS/IPMI motherboard which has 3 Network port inbuild.

[Narayan]

After installation, I am unable to access the WebGUI of the server. When I check the interfaces and IP a, vmbr0 state showing down which is a bridge to enp5s0
One thing I noticed is when I switch the cable to different ports, I get the different mac addresses of the port. The last bit is different than what my DHCP server shows.
I tried all the resolutions provided on the forum but had no luck.

 

[Narayan]

 

[Neobin]

Exchange the cable to the other network port, then reboot the PVE-host to be on the safe side and post the output of: ip a again, please.

 

[Narayan]

Hi Neobin,
"ifup vmbr0" fixed the issue. Not sure if I have to do this on every reboot. Now the mac address is correctly reflecting on the DHCP server.
DHCP lease started ip 192.168.2.93 --> mac f0:79:59:39:51:be
Previously it was showing below mac address which is not the correct one.
'DHCP lease started ip 192.168.2.19 --> mac f0:79:59:39:51:c0

 

[Neobin]

"ifup vmbr0" fixed the issue.

Weird, because (from your screenshot) enp5s0 and therefore vmbr0 has NO-CARRIER, but enp6s0 has.
That is why I suggested exchanging the cable from (I guessed) enp6s0 to enp5s0.