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

[Xin Chen <xcheney@xxxxxxxxxxxxxx>]

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
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