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[Xen-devel] HELP! LOSING NETWORK CONNECTION after XEND START

from [wei huang] [Permanent Link][Original]
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] HELP! LOSING NETWORK CONNECTION after XEND START
From: wei huang <huanwei@xxxxxxxxxxxxxxxxxx>
Date: Fri, 15 Jul 2005 17:58:45 -0400 (EDT)
Delivery-date: Fri, 15 Jul 2005 21:57:36 +0000
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Hi,

I am using the latest xen-unstable by Jul. 15th. Everything is dom0 works
fine. But as soon as I input 'xend start', all the network connections
just die.

I am using Broadcom NetXtreme network card, with tg3 driver.

I have collected some basic information and post it in the following part.
I remember some one seems to meet the same problem before, and I try to
find the solution is that thread, but no luck.

Could anyone give any help? Thanks.

======================================================================
Result for ifconfig:

BEFORE xend start:
eth0      Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
          inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:89 errors:0 dropped:0 overruns:0 frame:0
          TX packets:83 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:14402 (14.0 KiB)  TX bytes:7781 (7.5 KiB)
          Interrupt:16

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1168 (1.1 KiB)  TX bytes:1168 (1.1 KiB)
AFTER xend start:
eth0      Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:576 (576.0 b)
          Interrupt:16

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1168 (1.1 KiB)  TX bytes:1168 (1.1 KiB)

veth0     Link encap:Ethernet  HWaddr 00:0D:60:9A:15:60
          inet addr:9.2.72.112  Bcast:9.2.72.127  Mask:255.255.255.128
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:552 (552.0 b)

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:552 (552.0 b)  TX bytes:0 (0.0 b)

xen-br0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:468 (468.0 b)  TX bytes:0 (0.0 b)


=================================================================
Result for 'ip route show'
BEFORE xend start:
9.2.72.0/25 dev eth0  proto kernel  scope link  src 9.2.72.112
169.254.0.0/16 dev eth0  scope link
default via 9.2.72.1 dev eth0
AFTER:
9.2.72.0/25 dev veth0  proto kernel  scope link  src 9.2.72.112
169.254.0.0/16 dev veth0  scope link
default via 9.2.72.1 dev veth0

=================================================================
Result for 'ip addr show'
BEFORE:
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
2: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
3: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:0d:60:9a:15:60 brd ff:ff:ff:ff:ff:ff
    inet 9.2.72.112/25 brd 9.2.72.127 scope global eth0
5: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0d:60:9a:15:61 brd ff:ff:ff:ff:ff:ff
AFTER:
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
2: vif0.0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
3: veth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether 00:0d:60:9a:15:60 brd ff:ff:ff:ff:ff:ff
    inet 9.2.72.112/25 brd 9.2.72.127 scope global veth0
4: eth0: <BROADCAST,MULTICAST,NOARP,UP> mtu 1500 qdisc pfifo_fast qlen
1000
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
5: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:0d:60:9a:15:61 brd ff:ff:ff:ff:ff:ff
6: xen-br0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff

=====================================================================
Result for "route -n"
BEFORE:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use  Iface
9.2.72.0        0.0.0.0         255.255.255.128 U     0      0        0   eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0   eth0
0.0.0.0         9.2.72.1        0.0.0.0         UG    0      0        0   eth0
AFTER:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
9.2.72.0        0.0.0.0         255.255.255.128 U     0      0        0  veth0
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0  veth0
0.0.0.0         9.2.72.1        0.0.0.0         UG    0      0        0  veth0

======================================================================
xm log after xend start: (last few lines)
2005-07-15 17:14:44 xend] DEBUG (XendDomainInfo:177) config='None'

[2005-07-15 17:14:44 xend] INFO (SrvServer:63) unix
path=/var/lib/xend/xend-socket
[2005-07-15 17:14:44 xend] INFO (XendRoot:128) EVENT> xend.start 0
[2005-07-15 17:14:44 xend] INFO (process:35) [network] network start
bridge=xen-br0 netdev=eth0 antispoof=no

=======================================================================
dmesg after xend start:
device vif0.0 entered promiscuous mode
xen-br0: port 1(vif0.0) entering learning state
xen-br0: topology change detected, propagating
xen-br0: port 1(vif0.0) entering forwarding state
device eth0 entered promiscuous mode
tg3: eth0: Link is up at 100 Mbps, full duplex.
tg3: eth0: Flow control is off for TX and off for RX.
xen-br0: port 2(eth0) entering learning state
xen-br0: topology change detected, propagating
xen-br0: port 2(eth0) entering forwarding state




Regards,
Wei



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