Fabrice Delente
2012-Dec-07 13:58 UTC
Machine 1 can access the network, machine 2 with same config can''t
Hello. I have set up a Xen server on which I have 5 virtual machines running. 4 of them are able to ping each of them, or the internet; the 5th can''t, even though is has the same exact network configuration (except the IP, of course) as one of the other 4 (and both are running debian 6.0.6, installed with xm-tools). I guess I have to increase the number of ports(?) opened in the Xen bridge, but I don''t know how to do. Thanks for any help! -- F. Delente _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users
Alexandre Kouznetsov
2012-Dec-07 15:46 UTC
Re: Machine 1 can access the network, machine 2 with same config can''t
Hello. El 07/12/12 07:58, Fabrice Delente escribió:> I have set up a Xen server on which I have 5 virtual machines running. 4 > of them are able to ping each of them, or the internet; the 5th can''t, > even though is has the same exact network configuration (except the IP, > of course) as one of the other 4 (and both are running debian 6.0.6, > installed with xm-tools).As you describe it, looks like some problem on the bridge level. Please, post the output of "xm list" and "brctl show" from your Dom0.> I guess I have to increase the number of ports(?) opened in the Xen > bridge,Definitely not. -- Alexandre Kouznetsov
Fabrice Delente
2012-Dec-08 13:51 UTC
Re: Machine 1 can access the network, machine 2 with same config can''t
# xm list
Name ID Mem VCPUs State
Time(s)
Domain-0 0 1599 4 r-----
98165.4
antivirus 11 2048 1 r-----
743889.6
bcdi.fresnel.lyc14.ac-caen.fr 2 1024 1 -b----
57177.1
pronote 6 1024 1 -b----
48108.7
pronote-web 7 1024 1 -b----
35746.5
testMachine.fresnel.lyc14.ac-caen.fr 13 512 1 -b----
11.0
antivirus, pronote and pronote-web are Windows XP machines, bcdi and test
are debian-linux; bcdi accesses to the network normally, testMachine
doesn''t.
# brctl show
bridge name bridge id STP enabled interfaces
tmpbridge 8000.feffffffffff no vif13.0
xen-bridge 8000.06509a96e073 no eth0
tap11.0
tap6.0
tap7.0
vif11.0
vif2.0
vif6.0
vif7.0
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Alexandre Kouznetsov
2012-Dec-08 18:30 UTC
Re: Machine 1 can access the network, machine 2 with same config can''t
Hello. El 08/12/12 07:51, Fabrice Delente escribió:> # xm list > Name ID Mem VCPUs State Time(s) > Domain-0 0 1599 4 r----- 98165.4 > antivirus 11 2048 1 r----- 743889.6 > bcdi.fresnel.lyc14.ac-caen.fr 2 1024 1 -b---- 57177.1 > pronote 6 1024 1 -b---- 48108.7 > pronote-web 7 1024 1 -b---- 35746.5 > testMachine.fresnel.lyc14.ac-caen.fr 13 512 1 -b---- 11.0 > ... > # brctl show > bridge name bridge id STP enabled interfaces > tmpbridge 8000.feffffffffff no vif13.0 > xen-bridge 8000.06509a96e073 no eth0 > tap11.0 > ...All the virtual machines have interfaces within "xen-bridge", together with eth0. The only exception is the one with ID 13, which is "testMachine", according to your "xm list" output. Instead, it''s interfaces is within "tmpbridge", alone, unable to communicate anywhere. Take look on it''s config file. I bet it has not defined a "bridge" variable within "vif" directive. Compare the config with a working one. -- Alexandre Kouznetsov