Failure Bridges when disconnect network cable on first nic

Discussion in 'Proxmox VE: Networking and Firewall' started by Ricardo Martin, Sep 13, 2018.

  1. Ricardo Martin

    Ricardo Martin New Member

    Joined:
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    I have two supermicro servers with Proxmox 5.2-6 installed. I installed Debian 9 first
    following the manual.
    In each one we have 4 network cards, 2 motherboard integrated and 2 with a dual port network card intel i350.
    I have made the installation correctly and I have added 4 bridges one on each card to use it in different virtual machines.
    When I have disconnected the network cable from the first integrated card, the rest stops working and I can not connect to any of the bridges and I cant connect to the web proxmox interfaces.

    This is my network interface config

    Code:
    source /etc/network/interfaces.d/*
    
    auto lo
    
    iface enp3s0f0 inet manual
    
    iface enp129s0f0 inet manual
    
    iface enp129s0f1 inet manual
    
    iface enp3s0f1 inet manual
    
    auto vmbr0
    iface vmbr0 inet static
            address  192.168.200.10
            netmask  255.255.255.0
            gateway  192.168.200.1
            bridge-ports enp3s0f0
            bridge-stp off
            bridge-fd 0
    #INTEGRATED
    
    auto vmbr1
    iface vmbr1 inet static
            address  192.168.200.12
            netmask  255.255.255.0
            bridge-ports enp3s0f1
            bridge-stp off
            bridge-fd 0
    #INTEGRATED
    auto vmbr2
    iface vmbr2 inet static
            address  192.168.200.14
            netmask  255.255.255.0
            bridge-ports enp129s0f0
            bridge-stp off
            bridge-fd 0
    #INTEL 2 PORTS
    auto vmbr3
    iface vmbr3 inet static
            address  192.168.200.16
            netmask  255.255.255.0
            bridge-ports enp129s0f1
            bridge-stp off
            bridge-fd 0
    #INTEL 2 PORTS
    
    Code:
     pveversion -v
    proxmox-ve: 5.2-2 (running kernel: 4.15.18-1-pve)
    pve-manager: 5.2-6 (running version: 5.2-6/bcd5f008)
    pve-kernel-4.15: 5.2-4
    pve-kernel-4.15.18-1-pve: 4.15.18-17
    corosync: 2.4.2-pve5
    criu: 2.11.1-1~bpo90
    glusterfs-client: 3.8.8-1
    ksm-control-daemon: not correctly installed
    libjs-extjs: 6.0.1-2
    libpve-access-control: 5.0-8
    libpve-apiclient-perl: 2.0-5
    libpve-common-perl: 5.0-37
    libpve-guest-common-perl: 2.0-17
    libpve-http-server-perl: 2.0-9
    libpve-storage-perl: 5.0-24
    libqb0: 1.0.1-1
    lvm2: 2.02.168-pve6
    lxc-pve: 3.0.0-3
    lxcfs: 3.0.0-1
    novnc-pve: 1.0.0-2
    proxmox-widget-toolkit: 1.0-19
    pve-cluster: 5.0-29
    pve-container: 2.0-24
    pve-docs: 5.2-5
    pve-firewall: 3.0-13
    pve-firmware: 2.0-5
    pve-ha-manager: 2.0-5
    pve-i18n: 1.0-6
    pve-libspice-server1: 0.12.8-3
    pve-qemu-kvm: 2.11.2-1
    pve-xtermjs: 1.0-5
    qemu-server: 5.0-30
    smartmontools: 6.5+svn4324-1
    spiceterm: 3.0-5
    vncterm: 1.5-3
    
    Any idea??
     
  2. wolfgang

    wolfgang Proxmox Staff Member
    Staff Member

    Joined:
    Oct 1, 2014
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    Hi,

    you only use the first nic.

    If all nics are in the same subnet your default routing use only one nic.
    What do you try to archive with 4 nics in the same network with different IPs?
     
  3. Ricardo Martin

    Ricardo Martin New Member

    Joined:
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    That was the solution,

    thank you for your response.
     
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