On Wed, 7 Jun 2006, JMcCarthy at mortgagelink.ie wrote:
> So what about network cars/ports. Is one shared between all the
> guest OSes or does each OS need it's own port?
D <-----> ....
The hardware concerned is made accessible to one, and only one,
domain (domain0 typically). It uses a normal device driver for that
Other domains implement a device driver which use the Xen
inter-domain IPC as their 'hardware'. The domain0 OS has 'backend'
network drivers to handle that communication (the 'vif' driver -
Virtual Interface). The domain0 OS then uses existing bridging or
routing layers to switch/forward traffic between other domains and
the real network. E.g.:
Domain0 Guest Domains
(physical)<---->([NIC] ) ( )
(ethernet) ([normal driver] ) ( )
([OS networking stack]) ( <etc> )
( ) ( )
( ) ([OS Net stack])
(['Virtual' NIC] )<--(Xen IPC)-->([Virtual NIC] )
<snip horrendously long and stupid disclaimer>
Please could you post to ILUG from some other email account?
(Free webmail accounts are widely available. You can still receive
email to other accounts obviously).
Paul Jakma paul at clubi.iepaul at jakma.org Key ID: 64A2FF6A
Arbitrary systems, pl.n.:
Systems about which nothing general can be said, save "nothing
general can be said."
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