[c-nsp] mac address question

[Joe Maimon]

To be correct they should be mac-addresses that can be guaranteed unique 
(such as off old ethernet nic's), but thats hard to do in a range.

I dont see any reason to use different mac's for bridging and pppoe.





Paul A wrote:
> Joe, so basically I'm going to make up a mac-address and pass that along to
> the Telco correct?
> 
> Also currently im using a mac address on this router with RBE dsl
> connections and the new DSL's getting cut over to this ATM are PPPOE, I read
> somewhere on cisco that I should use a different mac-address for the PPPOE
> under a bba-group.
> 
> So I should just be able to make one up and pass that along to them?
> 
> Thanks,
> 
> Paul
> 
> P.A > -----Original Message-----
> P.A > From: Joe Maimon [mailto:jmaimon at ttec.com]
> P.A > Sent: Wednesday, May 07, 2008 10:50 AM
> P.A > To: Paul A
> P.A > Cc: cisco-nsp at puck.nether.net
> P.A > Subject: Re: [c-nsp] mac address question
> P.A > 
> P.A > Take an old ethernet card, copy its mac address and throw the ethernet
> P.A > card out.
> P.A > 
> P.A > Use that mac address.
> P.A > 
> P.A > Realistically, the TELCO is actually asking for what to put in a layer
> P.A > 2
> P.A > access list.
> P.A > 
> P.A > You want to be able to connect multiple routers, for example with an
> P.A > ATM
> P.A > switch, so tell them a mac address with the last two hex digits masked
> P.A > to FF
> P.A > 
> P.A > That way you can connect a couple hundred routers without involving
> P.A > them
> P.A > again.
> P.A > 
> P.A > So long as the mac's arent going to conflict with any of your
> P.A > customers,
> P.A > you shouldnt ever have a problem.
> P.A > 
> P.A > 
> P.A > Paul A wrote:
> P.A > > Hi, we have an ATM circuit that will be terminating some DSL
> P.A > circuits. The
> P.A > > Telco is asking me for the terminating router's mac address
> P.A > > I'm confused as to what mac address I should give them. I know im
> P.A > supposed
> P.A > > to add the mac-address statement under the ATM interface according
> P.A > to the
> P.A > > documents I read on the cisco site but how go I figure out with mac
> P.A > address
> P.A > > to use?
> P.A > >
> P.A > > TIA, P
> P.A > >
> P.A > >
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> 
>