[Xen-users] Bonded interfaces with trunk and iscsi SAN

[Donny Brooks <dbrooks@xxxxxxxxxxxxxxxx>]

We finally got our Dell MD3200i setup and working. What I now need to do 
is get it talking to my xen dom0's. One is a T710 with 4 nics and the 
other is a 2900 with 2 nics. Each server has all of it's interfaces 
bonded together using an 802.3ad type of setup and vlans passing over 
the bonded interface. I have given each dom0 a management IP on the 
bond0 interface. Also each dom0 is running Centos 5.5 with xen4.0 out of 
the gitco repo. I have successfully setup a windows domu with 5 nics (1 
network and 4 iscsi san) to talk to the SAN. That is the easy part. Now 
what I need to do is setup the dom0 to talk directly to it.
This is complicated with the bond+trunk. Basically what I need to happen 
is have a way to assign another IP to the bond0 interface. Being that I 
will have a very limited maintenance window to make this work, I would 
appreciate some feedback. One way I thought about doing it was to create 
a bond0:0 interface and add the SAN ip stuff to it. Should this work?
Here is the basic setup I have in case it helps:

in /etc/sysconfig/network-scripts I have the following:

ifcfg-bond0
ifcfg-bond0.1
ifcfg-bond0.10
ifcfg-bond0.11
ifcfg-bond0.12
ifcfg-bond0.13
ifcfg-bond0.14
ifcfg-bond0.15
ifcfg-bond0.2
ifcfg-bond0.20
ifcfg-bond0.21
ifcfg-bond0.22
ifcfg-bond0.23
ifcfg-bond0.3
ifcfg-bond0.4
ifcfg-bond0.5
ifcfg-bond0.6
ifcfg-bond0.7
ifcfg-bond0.8
ifcfg-bond0.9
ifcfg-br1
ifcfg-br10
ifcfg-br11
ifcfg-br12
ifcfg-br13
ifcfg-br14
ifcfg-br15
ifcfg-br2
ifcfg-br20
ifcfg-br21
ifcfg-br22
ifcfg-br23
ifcfg-br3
ifcfg-br4
ifcfg-br5
ifcfg-br6
ifcfg-br7
ifcfg-br8
ifcfg-br9
ifcfg-eth0
ifcfg-eth1

And the representative contents to help:

ifcfg-bond0:
DEVICE=bond0
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
IPADDR=10.8.1.151
NETMASK=255.255.255.0
NETWORK=10.8.1.0
GATEWAY=10.8.1.1
MTU=1496

ifcfg-bond0.1:
DEVICE=bond0.1
VLAN=yes
BRIDGE=br1
BOOTPROTO=none
ONBOOT=yes
TYPE=Ethernet

ifcfg-br1:
DEVICE=br1
TYPE=Bridge
BOOTPROTO=static
ONBOOT=yes

ifcfg-eth0:
# Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
USECTL=no
MASTER=bond0
SLAVE=yes
MTU=1496


Vlan20 is the SAN vlan and it has 192.168.0.0 on it. In debian I know 
how to accomplish this since you use the vmbrX interface and give it an 
IP. However I am not 100% sure how to do this in centos. I appreciate 
any help on this.
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