WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

Re: [Xen-users] Guest Network Some can Ping, Some can't Ping

To: Peter Braun <xenware@xxxxxxxxx>, xen-users <Xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Guest Network Some can Ping, Some can't Ping
From: Xin Chen <xcheney@xxxxxxxxxxxxxx>
Date: Thu, 07 Jun 2007 09:57:10 +1000
Delivery-date: Wed, 06 Jun 2007 16:56:36 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <acbf498f0706060333x7ad3b2a4g389e2cc3f37e44bc@xxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <466685FC.4070804@xxxxxxxxxxxxxx> <acbf498f0706060333x7ad3b2a4g389e2cc3f37e44bc@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla Thunderbird 1.0.6 (Windows/20050716)
Thanks Peter,

Here is some more details:
xen kernel : 2.6.18 fc6xen. I think it xen 3.03 version

Domain 0:
ifconfig:

eth0 Link encap:Ethernet HWaddr 00:30:48:32:4F:94 inet addr:192.168.200.120 Bcast:192.168.200.255 Mask:255.255.255.0
         inet6 addr: fe80::230:48ff:fe32:4f94/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:209250 errors:0 dropped:0 overruns:0 frame:0
         TX packets:154753 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:18710009 (17.8 MiB) TX bytes:373386899 (356.0 MiB)

eth1 Link encap:Ethernet HWaddr 00:30:48:32:4F:95 inet addr:192.168.200.120 Bcast:192.168.200.255 Mask:255.255.255.0
         inet6 addr: fe80::230:48ff:fe32:4f95/64 Scope:Link
         UP BROADCAST MULTICAST  MTU:1500  Metric:1
         RX packets:1691 errors:0 dropped:0 overruns:0 frame:0
         TX packets:579 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX bytes:130445 (127.3 KiB) TX bytes:50127 (48.9 KiB) Base address:0x2020 Memory:d8420000-d8440000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0
         inet6 addr: ::1/128 Scope:Host
         UP LOOPBACK RUNNING  MTU:16436  Metric:1
         RX packets:175021 errors:0 dropped:0 overruns:0 frame:0
         TX packets:175021 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:1648897712 (1.5 GiB) TX bytes:1648897712 (1.5 GiB)

peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:478654 errors:0 dropped:0 overruns:0 frame:0
         TX packets:395207 errors:0 dropped:0 overruns:0 carrier:0
collisions:3713 txqueuelen:10 RX bytes:41492823 (39.5 MiB) TX bytes:399211362 (380.7 MiB) Base address:0x2000 Memory:d8400000-d8420000 vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:154796 errors:0 dropped:0 overruns:0 frame:0
         TX packets:211115 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:373395245 (356.0 MiB) TX bytes:18960155 (18.0 MiB)

vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
         RX packets:108324 errors:0 dropped:0 overruns:0 frame:0
         TX packets:129226 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:15655502 (14.9 MiB) TX bytes:13086898 (12.4 MiB)

xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
         RX packets:27647 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:2533884 (2.4 MiB) TX bytes:0 (0.0 b)



Guest 1:
ifconfig:

[root@stimpy ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:16:3E:7D:FA:2C inet addr:192.168.200.25 Bcast:192.168.200.255 Mask:255.255.255.0
         inet6 addr: fe80::216:3eff:fe7d:fa2c/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:310 errors:0 dropped:0 overruns:0 frame:0
         TX packets:336 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000 RX bytes:34653 (33.8 KiB) TX bytes:38444 (37.5 KiB)

eth0:0 Link encap:Ethernet HWaddr 00:16:3E:7D:FA:2C inet addr:203.111.95.220 Bcast:203.111.95.255 Mask:255.255.255.128
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0
         inet6 addr: ::1/128 Scope:Host
         UP LOOPBACK RUNNING  MTU:16436  Metric:1
         RX packets:15210 errors:0 dropped:0 overruns:0 frame:0
         TX packets:15210 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0 RX bytes:7076141 (6.7 MiB) TX bytes:7076141 (6.7 MiB)




Peter Braun wrote:

Try to connect with crossover cable directly to the xen host server
and check ping.
What is the hardware? Which network card? Which xen version and kernel?

Second check if there is not in use one MAC more times.

I have had similar problem - was not able to ping 9th and more guest.
The problem was on switch - limitation of 8 mac per Ethernet port.

BR

Peter


2007/6/6, Xin Chen <xcheney@xxxxxxxxxxxxxx>:

Hi All,

Domain 0 : Fedora 6
Guest 1: Fedora 6
Environment: Server and pc clients are in the same network(class c).

Problem:
pc can ping domain 0 and very good, no timeout.
pc can ping Guest1, say 5 mins, then timeout for some mins, then can
ping again.  It is not stable at all.
Guest1 can ping every pc very well.
It is so strang!

in config file: it is using 'xenbr0'.

What I tried,
In domain 0, I switched from eth0 to eth1, even worse:: guest1 can't
ping others either.


The server is production DNS server, we are in painful now....

need help.

Thanks in advance!

x

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users