Re: [Xen-devel] vif tx drops

[Brian Wolfe <brianw@xxxxxxxxxxxx>]

I temporarilly solved this by converting the IP to hexidecimal and
setting the first 2 bytes of the mac to DE:AD. Unfortunately xen
increments the 3rd if you set the mac. We need a way to set the mac on
both ends of the vif device. 

Maybe we can have things this way. options...
a: set the mac on one end and have a standard "increment" bit somewhere
higher up(say first byte).
b: set the macs on both ends
c: set a specific range of macs to use

Either way xen really should test (not certain how exactly) to see if
it's already in existence prior to using a mac that is dynamicly set.
Not testing is playing russian roulette IMHO (as some including myself
have found out already).

Opinions?

On Wed, 2004-10-13 at 15:17, Keir Fraser wrote:
> > 
> > " This is *definitely* worth checking
> > " out at this point, and can be fixed by picking your own MAC addresses.
> > 
> > Yep.  How big a space do you randomize for mac addrs?
> > 
> > # grep -i AA:00:00:24:22:F3 a
> > batch009 (172.16.12.19) at AA:00:00:24:22:F3 [ether] on eth0
> > batch075 (172.16.12.85) at AA:00:00:24:22:F3 [ether] on eth0
> > 
> 
> I think AA:00:00:00:00:00 - AA:00:00:7F:FF:FF (i.e., 8 million
> addresses). But the random-number generator is crap.
> 
> You're definitely best off generating your own if creating any decent
> number of VMs.
> 
>  -- Keir
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
> Use IT products in your business? Tell us what you think of them. Give us
> Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
> http://productguide.itmanagersjournal.com/guidepromo.tmpl
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/xen-devel



-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/xen-devel