Re: [Xen-users] bonding + vlans ALMOST working, NO ARP

[Sébastien CRAMATTE <s.cramatte@xxxxxxxxxx>]

I've seen that  xen open suse package contains somes patch for bonding
I don't know if this is just a patch for bridge script or for netdev 
driver too ...
I can't able to open it with  alien + rpm under my debian sarge ... 
maybe you or someone can ?
this is the link :
http://download.opensuse.org/distribution/SL-OSS-factory/inst-source/suse/src/xen-3.0.3_11134-4.src.rpm

Regards


Eli Criffield a écrit :
> I'm very close to getting bonding + vlans + bridging to work.
>
> The only part that's not working is ARP.
>
> Why i have no idea? But if put in an arp entry for the default route
> manually with 'arp -s 192.168.129.1 00:00:0C:07:0C:C9' everything
> works great.  (Everything that goes though the default route anyway).
>
> Now if i run tcpdump on any of the interfaces involved in the bridge,
> eth0, eth1, bond0, vlan151 or vlan151-br, vif0,0, or veth0 (i don't
> rename any interfaces) then it works fine, I get arp replays. But if i
> use 'ip' to turn on promisc any of the interfaces it doesn't work,
> just like it doesn't work without promisc off.
>
> The script is a little diffrent then the last one i posted, I'll atach
> it at the end.
>
> Basically I'm combining eth0 and eth1 into bond0, add vlans to bond0
> named "vlanXXX"  make a bridge named vlanXXX-br and add vlanXXX to it,
> and then domU's are started with bridge=vlanXXX-br in there xen config
> file to decide what vlan they should be part of.
>
> So what is tcpdump doing to make arp work???
>
> Eli
>
> --- script ---
> #!/bin/sh
> # read in config for dom0
> . /etc/xen/network/dom0
>
> modprobe bonding
> modprobe 8021q
> modprobe bridge
>
> ip link set bond0 down arp off
> ip link set bond0 addr fe:ff:ff:ff:ff:ff
> ip addr flush bond0
> ip link set bond0 up
> ifenslave bond0 eth0 eth1
>
> vconfig set_name_type VLAN_PLUS_VID_NO_PAD
>
> # vlans are stored in /etc/xen/network/vlans one number per line
> # it'll create a vlanXXX-br bridge for eath vlan
>
> for vlan in `cat /etc/xen/network/vlans` ; do
>   vconfig add bond0 ${vlan}
>   ip link set vlan${vlan} up
>   brctl addbr vlan${vlan}-br
>   brctl stp vlan${vlan}-br off
>   brctl setfd vlan${vlan}-br off
>   #ip link set vlan${vlan} down arp off
>   brctl addif vlan${vlan}-br vlan${vlan}
>   ip link set vlan${vlan}-br up
> done
>
> # setup dom0's ip addr on one of the vlan bridgs
> # as defined in /etc/xen/network/dom0
> brctl addif vlan${dom0_VLAN}-br vif0.0
>
> ip link set veth0 addr 00:0d:60:4e:48:88 arp on
> ip link set vif0.0 up
> ip link set veth0 up
> ethtool -K veth0 tx off
>
> ip addr add ${dom0_IPADDR} broadcast ${dom0_BOADCAST} dev veth0
> ip route add default via ${dom0_GATEWAY} dev veth0
>
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