I give in

I give in

[Ted Kaczmarek]

What do I need to change to get peth0 using a different mac address?

I was hopeful I could figure it out but no joy :-(

Regards,
Ted

RE: I give in

[Ian Pratt]

> What do I need to change to get peth0 using a different mac address?

Why do you need to set peth0's MAC address? It shouldn't be endpoint src
or destination of any packets.

If you need to change it: "ifconfig peth0 hw ether xx:xx:xx:xx:xx:xx" 

Ian

RE: I give in

[Ted Kaczmarek]

On Fri, 2005-10-14 at 23:13 +0100, Ian Pratt wrote:
> > What do I need to change to get peth0 using a different mac address?
> 
> Why do you need to set peth0's MAC address? It shouldn't be endpoint src
> or destination of any packets.
> 
> If you need to change it: "ifconfig peth0 hw ether xx:xx:xx:xx:xx:xx" 
> 
> Ian
> 
> _______________________________________________

I was seeing arp entries on dom0 for itself using this mac address,
oddly enough I do not see this any more with

changeset:   7380:f9b300fab36e
tag:         tip
user:        kaf24@firebug.cl.cam.ac.uk
date:        Fri Oct 14 13:27:25 2005 +0100
summary:     This should fix time stopped / going slow problems that


The whole time I thought this was expected behavior. Was something
changed recently that would affect this? I was seeing the identical
behavior on both my SMP and UP machines until today. Got to the point
where I was using bgp to route local host traffic through my gateway to
get the two dom0 peth0's tp talk to each other.



dom0-1 - 10 domU
dom0-2 -  3 domU
           

	        Gateway
                   |
      --------------------------  subnet A
         |                 |
     dom0-1              dom0-2
         |peth0            |peth0            subnet B
---------------------------------------------------- 
|    |   |   |   |   |   |   |   |   |    |   |   | 
1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 2-1 2-2 2-3

With this topology dom0-1 and dom0-2 where seeing the peth0 mac address
in the arp table, so one peth0 could not talk to other across subnet B.


Regards,
Ted

RE: I give in

[Ian Pratt]

> > > What do I need to change to get peth0 using a different 
> mac address?
> > 
> > Why do you need to set peth0's MAC address? It shouldn't be 
> endpoint 
> > src or destination of any packets.
> > 
> > If you need to change it: "ifconfig peth0 hw ether 
> xx:xx:xx:xx:xx:xx" 

> I was seeing arp entries on dom0 for itself using this mac 
> address, oddly enough I do not see this any more with

I seriously doubt this behaviour has changed recently.

Have you given your peth0 an IP address? it shouldn't need one.
It should be configured with '-arp'.

Ian

RE: I give in

[Ted Kaczmarek]

On Sat, 2005-10-15 at 00:03 +0100, Ian Pratt wrote:
> > > > What do I need to change to get peth0 using a different 
> > mac address?
> > > 
> > > Why do you need to set peth0's MAC address? It shouldn't be 
> > endpoint 
> > > src or destination of any packets.
> > > 
> > > If you need to change it: "ifconfig peth0 hw ether 
> > xx:xx:xx:xx:xx:xx" 
> 
> > I was seeing arp entries on dom0 for itself using this mac 
> > address, oddly enough I do not see this any more with
> 
> I seriously doubt this behaviour has changed recently.
> 
> Have you given your peth0 an IP address? it shouldn't need one.
> It should be configured with '-arp'.
> 
> Ian

No, the only thing I have ever done with peth0 is look at its setting
with ethtool :-) 

I reviewed everything. my setup is identical except that now both my
SMP Athlon and UP I686 are running changeset : 7380:f9b300fab36e.

The interface in question is using an e1000 module, all default
settings.

To be honest I really thought this was normal as I kept saying to myself
how could no one else be having this problem. 

Anyway, If I see this again you can be assured of an extensive detailed
bug report :-)

I really have to say, that the work you guys are doing is making my life
easier and easier every day :-)

Thanks to the "Xen Team" for such a killer contribution.

Regards,
Ted