[Gllug] ADSL2 router help / recomendation

Chris Bell chrisbell at overview.demon.co.uk
Wed Jan 24 22:36:26 UTC 2007


On Wed 24 Jan, Nix wrote:

> 
> My ADSL router only has a valid (nonroutable) IP address because I want
> to be able to get to its configuration interface from within the
> firewall. I could remove that and it would work perfectly well.
> 
> Well, actually the router firmware won't let me remove its IP address,
> but there's no technical reason why the ADSL router itself needs any
> sort of layer 3 presence, as long as it's running in half-bridging mode
> (i.e., transforming PPPoA on one side to Ethernet on the other, and vice
> versa, without paying any attention to the packet contents at all).
> 

   I assumed that there must be some IP address allocated to the modem
because it needs to adjust its operation to suit line conditions and the BT
exchange equipment. Can it work without an address, or has the system been
designed to "just work"?

-- 
Chris Bell

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