i have a problem with bridge i can create a bridge, ant it work fine i have a bridge with 3 domU and they can ping any other but when i run ''tcpdump -n'' in for example dom1 and do ping from dom2 to dom3 tcpdump don''t capture anithing why? sorry for my bad english _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, Sep 17, 2008 at 10:40 AM, rmarfisi@inwind.it <rmarfisi@inwind.it> wrote:> i have a problem with bridge > > i can create a bridge, ant it work fine > i have a > bridge with 3 domU and they can ping any other > > but when i run ''tcpdump -n'' in > for example dom1 and do ping from dom2 to dom3 > tcpdump don''t capture anithingbe sure to use ''tcpdump -i br0'' (or whatever your bridge is called) -- Javier _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
2008. 09. 17, szerda keltezéssel 17.40-kor rmarfisi@inwind.it ezt írta:> i have a problem with bridge > > i can create a bridge, ant it work fine > i have a > bridge with 3 domU and they can ping any other > > but when i run ''tcpdump -n'' in > for example dom1 and do ping from dom2 to dom3 > tcpdump don''t capture anithing > > > why?If you listen on dom1 and the ping dom3 from dom2 then you mustn''t see that traffic, because xen networking is not based on virtual hubs (which simly relay every packet to every port), but it''s based on virtual switches, and switches intelligently forward the packets, only for the recipient. In this case dom1 is neither the sender nor the recipient. Try to listen on dom2 (e.g. with "tcpdump -n -i eth0") and then ping dom2 from dom3. Now you should really see something. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> i have a problem with bridge > > i can create a bridge, ant it work fine > i have a > bridge with 3 domU and they can ping any other > > but when i run ''tcpdump -n'' in > for example dom1 and do ping from dom2 to dom3 > tcpdump don''t capture anithing > > > why?# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 500 2 r----- 56.0 vm2 4 200 1 -b---- 9.0 - id4 = vif4.0 dom0 vm2 |eth0 | vif4.0 bridge | peth0 - traffic from/to vm2 # tcpdump -n -i vif4.0 - traffic from/to extern # tcpdump -n -i peth0 torsten _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users