Re: [Xen-users] Multi-bridged system or run services on Dom0?

[Tom Lobato <tomlobato@xxxxxxxxx>]

(Hi Sadique, thank you for the help.)

I'm seriously thinking about run the dom2 (virtualized debian etch) 
services on dom0. Because I made some tests from dom0 and from dom2 and 
the internet connection appears to be faster on dom0 (by a factor of 2, 
at least).
Should this internet bandwidth to be equals (between dom0 and domU) or 
really there is loss on domU?


Tom Lobato


Sadique Puthen escreveu:
> Tom Lobato wrote:
> >    Hello all!
> >
> >    I'm new to XEN and would like to hear your opinions about a little 
> > project.
> >    I have to build two servers:
> >        - Win2003 application server (with terminal service).
> >        - Linux (debian etch) (firewall, net load-balancing/failover, 
> > proxy-cache and Firebird DB server) connected to two internet links.
> >    My hardware: PowerEdge 840, 2GB RAM, 160GB SATA Disk, 3 NICs.
> >
> >    I`ve already made several tests with XEN/etch/win2003, but now I 
> > will reinstall all definitively.
> >    My plan is to run Xen/Etch as dom0 and full virtualize win2003 
> > (dom1) and etch (dom2).
> >    The main question is about the networking of such system.
> >    Dom2 (debian etch) need to access the two internet links and the 
> > LAN (10.0.0.0/8). Will have 3 virtual ethernet cards.
> >    Dom1 (Win2003) just need to access the LAN. Will have just 1 
> > virtual ethernet card.
> >    On Dom0, LAN will be connected via eth0, internet link 1 via eth1 
> > and internet link 2 via eth2.
> >    My question: will I have to setup, beyond xenbr0, more two bridges 
> > (xenbr2 and xenbr3)?
> >    xenbr2 inter-connecting dom2 eth1 to dom0 eth1. And xenbr3 
> > inter-connecting dom2 eth2 to dom0 eth2.
> Preferred way is to created three bridges using each physical 
> interfaces and assign  virtual devices to bridges according to your 
> requirements. Eg, bridge eth0 and eth1 of a geust to bridge1 and eth2 
> of the guest to bridge2.
> You can see some more details on my blogs.    
> http://sadiquepp.blogspot.com/
> --Sadique
>
> >    Is it a good solution or would be better to run the functions of 
> > dom2 (virtualized debian etch) on Dom0 itself?
> >    I think I will not need STP on 3 bridges, since it does not need 
> > direct communication. Am I right?
> >    Any hints are welcome.
> >
> >
> >    Sorry for the long msg =)
> >    Thank you!
> >
> >
> >    Tom Lobato
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users

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