Konstantinos Pachopoulos
2006-Mar-05 17:32 UTC
[Xen-users] xen support only up to 3 virtual interfaces?
Hi,
does xen support only up to 3 virtual interfaces per
unprivileged domain?
--------------------------
hermes:~# ifconfig -a
eth0 Link encap:Ethernet HWaddr
AA:00:00:00:00:11
...
eth1 Link encap:Ethernet HWaddr
AA:00:00:00:00:12
...
eth2 Link encap:Ethernet HWaddr
AA:00:00:00:00:13
...
--------------------------
and in /etc/xen/hermes config file:
--------------------------
......
vif = [
# ''bridge=xenbr0''
''mac=aa:00:00:00:00:11,bridge=xenbr-cluster'' ,
''mac=aa:00:00:00:00:12,bridge=xenbr-awmn'' ,
''mac=aa:00:00:00:00:13,bridge=xenbr-lan'' ,
''mac=aa:00:00:0A:00:12,bridge=xenbr-inet''
]
......
--------------------------
In other experiments, the fourth entry of the vif
parameter is never used too.
Thank you,
Kostas
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Goetz Bock
2006-Mar-06 10:05 UTC
Re: [Xen-users] xen support only up to 3 virtual interfaces?
On Sun, Mar 05 ''06 at 17:32, Konstantinos Pachopoulos wrote:> does xen support only up to 3 virtual interfaces per > unprivileged domain?For xen3 the answer is yes. IIRC xen2 supported more than three interfaces. -- /"\ Goetz Bock at blacknet dot de -- secure mobile Linux everNETting \ / (c) 2006 Creative Commons, Attribution-ShareAlike 2.0 de X [ 1. Use descriptive subjects - 2. Edit a reply for brevity - ] / \ [ 3. Reply to the list - 4. Read the archive *before* you post ] _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Henrik Holmboe
2006-Mar-16 08:02 UTC
Re: [Xen-users] xen support only up to 3 virtual interfaces?
Goetz Bock <bock@blacknet.de> writes:>On Sun, Mar 05 ''06 at 17:32, Konstantinos Pachopoulos wrote: >> does xen support only up to 3 virtual interfaces per >> unprivileged domain? >For xen3 the answer is yes. >IIRC xen2 supported more than three interfaces.Just out of curiousity, is there an outspoken reason for limiting to 3 interfaces? h. -- Henrik Holmboe, Stockholm, Sweden <http://henrik.holmboe.se/contact/> _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Goetz Bock
2006-Mar-16 08:17 UTC
Re: [Xen-users] xen support only up to 3 virtual interfaces?
On Thu, Mar 16 ''06 at 09:02, Henrik Holmboe wrote:> >On Sun, Mar 05 ''06 at 17:32, Konstantinos Pachopoulos wrote: > >> does xen support only up to 3 virtual interfaces per > >> unprivileged domain? > >For xen3 the answer is yes. > >IIRC xen2 supported more than three interfaces. > > Just out of curiousity, is there an outspoken reason for limiting to 3 > interfaces?Yes, the correct explination is in the archive somewhere. But IIRC three was the max. nr. of interfaces to have the the required ringbuffers fit in one $simple_manageable_chunk_of_memmory (a page??). The person who explained this also wrote a patch to expand the number of interfaces. But it was never added to the source try as you would loos performence. -- Goetz Bock (c) 2006 as blacknet.de - Munich - Germany /"\ IT Consultant Creative Commons secure mobile Linux everNETting \ / X ASCII Ribbon Campaign against HTML email & microsoft attachments / \ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users