[ovs-discuss] How to set the MAC address of bridge local port

[Ben Pfaff]

What's in the ovs-vswitchd log?

On Tue, Mar 03, 2015 at 12:51:18PM -0500, Krishna Pratap wrote:
> I tried bringing the port up. it doesn't change any thing. here is the
> output.
> 
> 
> root at ccpu5:~# ovs-vsctl  set bridge br0
> other-config:hwaddr=\"00:15:17:a0:29:80\"
> root at ccpu5:~#
> root at ccpu5:~#
> root at ccpu5:~# ovs-ofctl dump-ports-desc br0
> OFPST_PORT_DESC reply (xid=0x2):
>  LOCAL(br0): addr:16:0a:05:2e:20:bc
>      config:     0
>      state:      0
>      speed: 0 Mbps now, 0 Mbps max
> root at ccpu5:~#
> root at ccpu5:~#
> root at ccpu5:~#
> root at ccpu5:~# ifconfig br0
> br0       Link encap:Ethernet  HWaddr 16:0a:05:2e:20:bc
>           inet6 addr: fe80::140a:5ff:fe2e:20bc/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:468 (468.0 B)
> 
> 
> On Tue, Mar 3, 2015 at 12:46 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> > On Tue, Mar 03, 2015 at 11:28:27AM -0500, Krishna Pratap wrote:
> > > Is it possible to set the MAC address of the local port of bridge( not
> > the
> > > address of bridge itself) with a fixed address?
> > >
> > > I tried couple of ways to do it. one of them mentioned here in this old
> > > thread
> > > http://openvswitch.org/pipermail/discuss/2011-June/005297.html
> > >
> > > i tested this one out but it doesn't change the mac address of port br0.
> > > here is what I did.
> > >
> > > root at ccpu:~# ovs-vsctl add-br br0 -- set bridge br0
> > > other-config:hwaddr=\"00:15:17:a0:29:80\"
> > > root at ccpu5:~# ovs-ofctl dump-ports-desc br0
> > > OFPST_PORT_DESC reply (xid=0x2):
> > >  LOCAL(br0): addr:ce:09:03:00:00:00
> > >      config:     PORT_DOWN
> > >      state:      LINK_DOWN
> > >      speed: 0 Mbps now, 0 Mbps max
> > >
> > >
> > > As we can see the Mac address doesn't change. it does update the bridge
> > > table's other-config column .
> >
> > I think that should work.
> >
> > I notice that the port is down.  Does it make any difference to bring it
> > up?
> >
> 
> 
> 
> -- 
> Best Regards,
> Krishna Pratap Singh