Dual-nic bonding question/help

[Lars Sorensen]

On 11/15/06, Mark Haney <mhaney at ercbroadband.org> wrote:
> Lars Sorensen wrote:
> > Hi all,
> >
> > I'm in the process of reconfiguring a FC5 Proliant servers dual nic
> >
> > But before I actually change anything ( server is in production ) I
> > need some help with my setup as this is the first time I've ventured
> > into this :-)
> >
> > I hope some of you gurus can help me with this and point out if this
> > is the correct way, or if there's an easier/better way to do it, and
> > if I'm missing anything in the setup.
> >
> > Any input/help would be greatly appreciated
> >
> > All the best
> >
> > Lars Sorensen
> >
> > Below is the setup I've seen on another running server:
> >
> >
> >
> > cat /etc/modprobe.conf
> > alias bond0 bonding
> > options bond0 mode=1 miimon=100
> > alias eth0 tg3
> > alias eth1 tg3
> > alias scsi_hostadapter cciss
> >
> >
> > [root at localhost ~]# cat /root/ifcfg-eth0
> > # Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet
> > DEVICE=eth0
> > BOOTPROTO=none
> > ONBOOT=yes
> > MASTER=bond0
> > SLAVE=yes
> > USERCTL=no
> > TYPE=Ethernet
> >
> > [root at localhost ~]# cat /root/ifcfg-eth1
> > # Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet
> > DEVICE=eth1
> > BOOTPROTO=none
> > ONBOOT=yes
> > MASTER=bond0
> > SLAVE=yes
> > USERCTL=no
> > TYPE=Ethernet
> >
> > [root at localhost ~]# cat /root/ifcfg-bond0
> > DEVICE=bond0
> > BOOTPROTO=none
> > ONBOOT=yes
> > USERCTL=no
> > IPADDR=0.0.0.0
> >
> > [root at localhost ~]# cat /root/ifcfg-bond0.10
> > DEVICE=bond0.10
> > BOOTPROTO=none
> > ONBOOT=yes
> > USERCTL=no
> > REORDER_HDR=no
> > IPADDR=212.xx.xx.248
> > NETMASK=255.255.255.224
> > GATEWAY=212.xx.xx.225
> >
> > [root at localhost ~]# cat /etc/sysconfig/static-routes
> > net 192.168.1.0 netmask 255.255.255.0 gw 212.xx.xx.228
> >
> That looks about how I do it on some of our servers, except for the
> second bonded interface.  Why make a second bonded interface?  Which is
> what I see you doing with bond0.10?  With our bonded interfaces we setup
> everything in bond0 (and bond1, etc).  Only if I have need another
> virtual interface do I setup one like bond0.10.
>
>
>
> --
> Ceterum censeo, Carthago delenda est.
>
> Mark Haney
> Sr. Systems Administrator
> ERC Broadband
> (828) 350-2415
>
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>

Hi Mark,

Yeah I was wondering that too :-)
Actually the setup is what I saw on a server that one of the previous
guys setup.
But due to my lack of experience in this matter I am wondering why it
was set up like this.

What would could be the reason for this kind of setup ?

Best regards

Lars Sorensen