Dell r7725 clean installation with Broadcom 57504 Quad Port 10/25GbE

rubikon

New Member
Nov 8, 2026
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I had install new VE 9.2 on subj, and after installation i don't have vmbr0 and can't access web interface.

manually i can fix it by console:
ip link add name vmbr0 type bridge
ip link set nic0 master vmbr0
ip addr add *.*.*.123/24 dev vmbr0
ip link set nic0 up
ip link set vmbr0 up
ip route add default via *.*.*.254



and save configuration in /etc/network/interfaces
auto lo
iface lo inet loopback

iface nic0 inet manual

auto vmbr0
iface vmbr0 inet static
address *.*.*.123/24
gateway *.*.*.254
bridge-ports nic0
bridge-stp off
bridge-fd 0

iface nic1 inet manual
iface nic2 inet manual
iface nic3 inet manual
iface nic4 inet manual
iface nic5 inet manual

source /etc/network/interfaces.d/*


but after reboot - clean as before
Why it's not work from the box???
 
HI rubikon,
Check if you can see the interfaces using these commands:

ip -br link
lsmod | grep bnxt -----> bnxt_en
lspci | grep -Ei 'ethernet|network' ---- > Broadcom Inc. BCM57504

ip link show
ls -l /sys/class/net
ethtool -i nic0
 
Hi @rubikon , welcome to the forum.

Your network configuration looks correct at first glance.

There a few things you can check and also supply here :
- output of "ip a" after "bad" boot, capture it into the file and provide as text in CODE tags
- output of "ip a" after you "fixed" it
- before reboot: ls -la /etc/network/interfaces*
- before reboot: cat /etc/network/interfaces.new
- after reboot, cat /etc/network/interfaces
- before reboot after saving your changes: ifreload -a -d

Cheers


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