FAQ
Hello:

I am trying to follow the RHEL virtualization guide
to set up a bridge on a system running CentOS 5.4.

I copied my ifcfg-eth0 to ifcfg-eth0:1 and
set its content to this:

DEVICE=eth0:1
HWADDR=[The MAC address from eth0]
ONBOOT=yes
BRIDGE=br1

I then created ifcfg-br1 with this content:

DEVICE=br1
TYPE=Bridge
BOOTPROTO=static
BROADCAST2.168.2.255
IPADDR2.168.2.202
NETMASK%5.255.255.0
NETWORK2.168.2.0
ONBOOT=yes
DELAY=0

When I do service network restart, I get this error:

error in ifcfg-eth0:1: didn't specify device or ipaddr

I specified the device so it looks like it wants an IP
address but that is contrary to what I am reading on
the Internet.

Any ideas what went wrong?

Thanks,
Neil


--
Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
Will your e-commerce site go offline if you have
a DB server failure, fiber cut, flood, fire, or other disaster?
If so, ask about our geographically redundant database system.

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  • Neil Aggarwal at Oct 20, 2009 at 6:11 pm
    I did some more reading on the Internet and it looks like
    I am supposed to set up the bridge on eth0 and configure
    the bridge with the IP address of the host.

    So, I removed ifcfg-eth0:1 and changed ifcfg-eth0
    to this:
    DEVICE=eth0
    HWADDR=[The MAC address]
    ONBOOT=yes
    BRIDGE=br0

    I removed ifcfg-br1 and created ifcfg-br0 with this
    content:
    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=static
    BROADCAST2.168.2.255
    IPADDR2.168.2.200
    NETMASK%5.255.255.0
    NETWORK2.168.2.0
    ONBOOT=yes
    DELAY=0

    I don't get any errors when I do service network restart
    but now I can't ssh to the host using the 192.168.2.200
    IP address.

    I also tried setting these values in /etc/sysctl.conf:

    net.bridge.bridge-nf-call-ip6tables = 0
    net.bridge.bridge-nf-call-iptables = 0
    net.bridge.bridge-nf-call-arptables = 0

    net.ipv4.ip_forward = 1

    and rebooting the machine. That did not help.

    Any ideas?

    Thanks,
    Neil


    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.
  • Neil Aggarwal at Oct 20, 2009 at 6:20 pm
    Actually, this worked. I am able to SSH to the box
    on the 192.168.2.200 IP address. I had a typo in
    my ssh command. Sorry for any confusion.

    Thanks,
    Neil

    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.
    -----Original Message-----
    From: centos-virt-bounces at centos.org
    [mailto:centos-virt-bounces at centos.org] On Behalf Of Neil Aggarwal
    Sent: Tuesday, October 20, 2009 1:11 PM
    To: 'Discussion about the virtualization on CentOS'
    Subject: Re: [CentOS-virt] Error setting up bridge with
    static IP address

    I did some more reading on the Internet and it looks like
    I am supposed to set up the bridge on eth0 and configure
    the bridge with the IP address of the host.

    So, I removed ifcfg-eth0:1 and changed ifcfg-eth0
    to this:
    DEVICE=eth0
    HWADDR=[The MAC address]
    ONBOOT=yes
    BRIDGE=br0

    I removed ifcfg-br1 and created ifcfg-br0 with this
    content:
    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=static
    BROADCAST2.168.2.255
    IPADDR2.168.2.200
    NETMASK%5.255.255.0
    NETWORK2.168.2.0
    ONBOOT=yes
    DELAY=0

    I don't get any errors when I do service network restart
    but now I can't ssh to the host using the 192.168.2.200
    IP address.

    I also tried setting these values in /etc/sysctl.conf:

    net.bridge.bridge-nf-call-ip6tables = 0
    net.bridge.bridge-nf-call-iptables = 0
    net.bridge.bridge-nf-call-arptables = 0

    net.ipv4.ip_forward = 1

    and rebooting the machine. That did not help.

    Any ideas?

    Thanks,
    Neil


    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.

    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt
  • Ben M. at Oct 20, 2009 at 6:25 pm
    Are you using the "leaked" copy of 5.4 or is it showing on some of the
    mirrors now?

    Neil Aggarwal wrote:
    Actually, this worked. I am able to SSH to the box
    on the 192.168.2.200 IP address. I had a typo in
    my ssh command. Sorry for any confusion.

    Thanks,
    Neil

    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.
    -----Original Message-----
    From: centos-virt-bounces at centos.org
    [mailto:centos-virt-bounces at centos.org] On Behalf Of Neil Aggarwal
    Sent: Tuesday, October 20, 2009 1:11 PM
    To: 'Discussion about the virtualization on CentOS'
    Subject: Re: [CentOS-virt] Error setting up bridge with
    static IP address

    I did some more reading on the Internet and it looks like
    I am supposed to set up the bridge on eth0 and configure
    the bridge with the IP address of the host.

    So, I removed ifcfg-eth0:1 and changed ifcfg-eth0
    to this:
    DEVICE=eth0
    HWADDR=[The MAC address]
    ONBOOT=yes
    BRIDGE=br0

    I removed ifcfg-br1 and created ifcfg-br0 with this
    content:
    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=static
    BROADCAST2.168.2.255
    IPADDR2.168.2.200
    NETMASK%5.255.255.0
    NETWORK2.168.2.0
    ONBOOT=yes
    DELAY=0

    I don't get any errors when I do service network restart
    but now I can't ssh to the host using the 192.168.2.200
    IP address.

    I also tried setting these values in /etc/sysctl.conf:

    net.bridge.bridge-nf-call-ip6tables = 0
    net.bridge.bridge-nf-call-iptables = 0
    net.bridge.bridge-nf-call-arptables = 0

    net.ipv4.ip_forward = 1

    and rebooting the machine. That did not help.

    Any ideas?

    Thanks,
    Neil


    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.

    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt
    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt
  • Neil Aggarwal at Oct 20, 2009 at 6:26 pm
    I downloaded the DVD iso using the torrent file from
    one of the mirrors showing it.


    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.
    -----Original Message-----
    From: centos-virt-bounces at centos.org
    [mailto:centos-virt-bounces at centos.org] On Behalf Of Ben M.
    Sent: Tuesday, October 20, 2009 1:26 PM
    To: Discussion about the virtualization on CentOS
    Subject: Re: [CentOS-virt] Error setting up bridge with
    static IP address

    Are you using the "leaked" copy of 5.4 or is it showing on
    some of the
    mirrors now?

    Neil Aggarwal wrote:
    Actually, this worked. I am able to SSH to the box
    on the 192.168.2.200 IP address. I had a typo in
    my ssh command. Sorry for any confusion.

    Thanks,
    Neil

    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.
    -----Original Message-----
    From: centos-virt-bounces at centos.org
    [mailto:centos-virt-bounces at centos.org] On Behalf Of Neil Aggarwal
    Sent: Tuesday, October 20, 2009 1:11 PM
    To: 'Discussion about the virtualization on CentOS'
    Subject: Re: [CentOS-virt] Error setting up bridge with
    static IP address

    I did some more reading on the Internet and it looks like
    I am supposed to set up the bridge on eth0 and configure
    the bridge with the IP address of the host.

    So, I removed ifcfg-eth0:1 and changed ifcfg-eth0
    to this:
    DEVICE=eth0
    HWADDR=[The MAC address]
    ONBOOT=yes
    BRIDGE=br0

    I removed ifcfg-br1 and created ifcfg-br0 with this
    content:
    DEVICE=br0
    TYPE=Bridge
    BOOTPROTO=static
    BROADCAST2.168.2.255
    IPADDR2.168.2.200
    NETMASK%5.255.255.0
    NETWORK2.168.2.0
    ONBOOT=yes
    DELAY=0

    I don't get any errors when I do service network restart
    but now I can't ssh to the host using the 192.168.2.200
    IP address.

    I also tried setting these values in /etc/sysctl.conf:

    net.bridge.bridge-nf-call-ip6tables = 0
    net.bridge.bridge-nf-call-iptables = 0
    net.bridge.bridge-nf-call-arptables = 0

    net.ipv4.ip_forward = 1

    and rebooting the machine. That did not help.

    Any ideas?

    Thanks,
    Neil


    --
    Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
    Will your e-commerce site go offline if you have
    a DB server failure, fiber cut, flood, fire, or other disaster?
    If so, ask about our geographically redundant database system.

    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt
    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt
    _______________________________________________
    CentOS-virt mailing list
    CentOS-virt at centos.org
    http://lists.centos.org/mailman/listinfo/centos-virt

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groupcentos-virt @
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postedOct 20, '09 at 5:11p
activeOct 20, '09 at 6:26p
posts5
users2
websitecentos.org
irc#centos

2 users in discussion

Neil Aggarwal: 4 posts Ben M.: 1 post

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