[Xen-users] Bridging Issues with Xen

[Idan Shinberg <idan@xxxxxxxxxxxxx>]

Hey All

I'm Using Xen 3.0.3-105 on CentOS 5.5.
It Has to Nics:
eth0 - Internet
eth1 - Internal Lan ( where Dhcp , DNs , Cobbler - Kick Start Server
Resides )

I've Set xend-config.xsp to create xenbr1 on eth1 and it looks well So
Guest May Get Access TO ALl Resources via the Bridge.

brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr1          8000.feffffffffff       no              vif1.0
                                                        peth1
                                                        vif0.0

Tried To Install Guest Via Virt-Install

virt-install  -p --location
"http://10.0.0.3/cblr/links/CentOS-5.2-xen-x86_64"; -b xenbr1 -m
"03:ac:5a:00:02:29" --nographics --file /dev/xenvg/lv-rt1-d  --ram 7500 -x
"ks=http://10.0.0.3/cblr/svc/op/ks/profile/CentOS-5.2-x86_64"; --name="rt1"
--force

or Just By Booting A premade config file :
name = "rt1-d"
uuid = "2e656868-91d3-fa3e-300c-3a8a9909cf09"
kernel = "/etc/xen/vmlinuz"
ramdisk = "/etc/xen/initrd.img"
extra = "text ks=http://10.0.0.3/cblr/svc/op/ks/profile/CentOS-5.2-x86_64
ip=dhcp"
maxmem = 7500
memory = 7500
vcpus = 4
#bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vfb = [ "type=vnc,vncunused=1,keymap=en-us" ]
disk = [ "phy:/dev/xenvg/lv-rt1-d,xvda,w" ]
vif = [
"mac=03:ac:5a:00:02:29,bridge=xenbr1,script=vif-bridge,vifname=vif1.0" ]

Both of Them Fail in the DHCP Lease Acquire Stage As THey Fail To Pass
Ther DHCP Requestes to 10.0.0.3 ( Also The DHCP Server ).
Even if i state Static IP , This Fails point to me this is in fact a
networking issue in My Brdige ( similiar Expermintes on a single NIC
servers Work Ok).

And Yes , I'm Sure My DHcp Server Functions OK.

I Need Help Figuring This Out . 
Xen Gurus TO the Rescue ?

Tnks 

Idan

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