[nsp] DHCP bindings

[Bruce Pinsky]

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Charles Sprickman wrote:

| Hi,
|
| I'm currently using the IOS dhcp server to serve addresses to our DSL
| customers that don't want static addresses.  Generally these folks don't
| want to fiddle with settings, or they are overly paranoid about the RIAA,
| etc. and don't want to keep using the same IP.
|
| Is there any way to tell the IOS DHCP server to *not* try to keep handing
| out the same IP?  It seems some people get different IPs on release/renew
| some don't.  On the ones that don't, I see the following:
|
| 216.220.x.x  0100.0c41.8570.5b       Mar 12 2004 04:21 AM    Automatic
|      "sticky address" ----> ^^
|
| 216.220.x.x  0003.9326.8a10          Mar 12 2004 05:05 AM    Automatic
|       normal address
|
| What do those two extra hex digits after the MAC address refer to?
|

Actually, there are prepended digits, namely the 01.  They represent the
address as being on an ethernet media type.  From the docs:

	Specifies the distinct identification of the client in dotted 		
hexadecimal notation, for example, 01b7.0813.8811.66, where 01 		
represents the Ethernet media type.

I notice that the first address you cite is actually a cisco OUI (0x00000c)
where the second is an Apple OUI (0x000393).  Is the first one a router
that is actually running PPPoE instead of just a client with an ethernet
adapter?

- --
=========
bep

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