[Xen-users] internal-br vs xenbr0. networking issue

[Nicholas Lee <emptysands@xxxxxxxxx>]

I've got this straight issue with xenbr0 working and internal-br0 not
working between dom0 and a domU on the same machine.  Also a domU on a
different machine works to that domU.

[nic@wuwei:/etc/xen] ssh rails.plumtree.co.nz
Linux rails 2.6.12.6-xenU #3 SMP Sun Jan 22 12:05:59 NZDT 2006 x86_64 GNU/Linux
....
Last login: Thu Feb 16 17:04:06 2006 from 131.203.110.4
nic@rails:~$ logout

[nic@wuwei:/etc/xen] ping rails.internal
PING rails.internal (10.X.0.103) 56(84) bytes of data.
64 bytes from rails.internal (10.X.0.103): icmp_seq=1 ttl=64 time=0.049 ms
64 bytes from rails.internal (10.X.0.103): icmp_seq=2 ttl=64 time=0.024 ms

--- rails.internal ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.024/0.036/0.049/0.013 ms

[nic@wuwei:/etc/xen] ssh rails.plumtree.co.nz
[nic@wuwei:/etc/xen] ssh -v rails.internal
OpenSSH_3.8.1p1 Debian-8.sarge.4, OpenSSL 0.9.7e 25 Oct 2004
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to rails.internal [10.X.0.103] port 22.
debug1: Connection established.
debug1: identity file /home/nic/.ssh/identity type -1
debug1: identity file /home/nic/.ssh/id_rsa type -1
debug1: identity file /home/nic/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version
OpenSSH_3.8.1p1 Debian-8.sarge.4
debug1: match: OpenSSH_3.8.1p1 Debian-8.sarge.4 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.8.1p1 Debian-8.sarge.4
debug1: SSH2_MSG_KEXINIT sent

Connection stalls here.

Whereas, from another physical machine (running 2.0 still):

[nic@shell:~] ssh rails.internal
Linux rails 2.6.12.6-xenU #3 SMP Sun Jan 22 12:05:59 NZDT 2006 x86_64 GNU/Linux
...
nic@rails:~$ logout
Connection to rails.internal closed.

Its even worse from the domU to the dom0:

nic@rails:~$ ssh -v wuwei.internal
OpenSSH_3.8.1p1 Debian-8.sarge.4, OpenSSL 0.9.7e 25 Oct 2004
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to wuwei.internal [10.X.0.252] port 22.
debug1: Connection established.
debug1: identity file /home/nic/.ssh/identity type -1
debug1: identity file /home/nic/.ssh/id_rsa type -1
debug1: identity file /home/nic/.ssh/id_dsa type -1


Tcpdump hasn't got me anywhere.

[nic@wuwei:/etc/xen] brctl  show
bridge name     bridge id               STP enabled     interfaces
internal-br             8000.00093d1349bf       yes             eth1
                                                        vif10.1
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0
                                                        vif10.0
[nic@wuwei:~] cat /etc/network/interfaces
...
auto internal-br
iface internal-br inet static
        address 10.X.0.252
        netmask 255.255.0.0
        network 10.X.0.0
        broadcast 10.X.255.255
        bridge_ports eth1
        bridge_fd 0
        bridge_hello 1
        bridge_stp on

nic@rails:~$ cat /etc/network/interfaces
...
auto eth1
iface eth1 inet static
        address 10.X.0.103
        netmask 255.255.0.0
        network 10.X.0.0
        broadcast 10.X.255.255

[nic@wuwei:~] cat /etc/xen/rails

vif = [ 'mac=aa:00:00:00:01:03, bridge=xenbr0',
'mac=aa:00:00:01:01:03, bridge=internal-br' ]


Thoughts?


--
Nicholas Lee
http://stateless.geek.nz
gpg 8072 4F86 EDCD 4FC1 18EF  5BDD 07B0 9597 6D58 D70C

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