loc_az_hci/infrastructure/proxmox/ML110_NETWORK_UPDATE.md

ML110 Network Configuration Update

What Was Changed

Previous Configuration:

• vmbr0 = nic0 (should be LAN but no IP was obtained)
• vmbr1 = nic1 (had LAN IP 192.168.1.207)

New Configuration:

• vmbr0 = nic1 (LAN - should get 192.168.1.207/24)
• vmbr1 = nic0 (WAN - should get public IP from Spectrum modem)

Status

✅ Configuration file updated: /etc/network/interfaces ⚠️ Network reload was initiated ⚠️ Server temporarily unreachable (expected during network change)

Next Steps

If Server Becomes Accessible Again

1. Verify network status:

ssh root@192.168.1.207
ip addr show | grep -E "vmbr0|vmbr1" -A 3
ip route show

2. Expected results:

• vmbr0 should have 192.168.1.207/24 (LAN)
• vmbr1 should have a public IP (WAN)
• Default route should be via vmbr1

If Server Remains Unreachable

Access via console/iDRAC to verify:

1. Check network interfaces:

ip addr show
systemctl status networking
journalctl -u networking -n 50

2. If needed, revert to previous config:

# Restore backup
cp /etc/network/interfaces.backup.* /etc/network/interfaces
ifreload -a

3. Or manually check configuration:

cat /etc/network/interfaces
# Verify bridges are correct

Current Network Configuration

The configuration file has been updated to:

• vmbr0 (LAN) = nic1 with DHCP, metric 200
• vmbr1 (WAN) = nic0 with DHCP, metric 100

This aligns the bridge assignments with the actual physical connections where nic1 is connected to the LAN.

Backup Location

Backup of previous configuration saved as: /etc/network/interfaces.backup.YYYYMMDD_HHMMSS