[Gllug] ADSL2 router help / recomendation
Chris Bell
chrisbell at overview.demon.co.uk
Wed Jan 24 10:38:46 UTC 2007
On Wed 24 Jan, t.clarke wrote:
> My understanding is that the Router DOES require an IP address on its
> 'external' interface.
> Our ISP actually provides two IP addresses for the line (which sort of
> alias to each other it seems).
> Offhand I think the router uses one of those addresses on its external
> interface and the Linux box uses the other address on its external interface
> (to the router).
>
> Maybe some routers work differently ?
>
> Tim
>
My understanding is that it may need an IP address, but not neccessarily
a public one. The deciding factor may be at the BT end of an ADSL link.
There are several possibilities, including
RFC 3330 - Special-Use IPv4 Addresses
169.254.0.0/16 is a reserved block for link local addresses
224.0.0.1 is a special address which means all interfaces connected to the
network, and may be used by a router as it attempts to identify possible
connections.
--
Chris Bell
-------------- next part --------------
--
Gllug mailing list - Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug
More information about the GLLUG
mailing list