Re: DSL that also uses dial-up (PPPOE)

"Richard Fangnail" <richardfangnail@xxxxxxxxxx> writes:

Why do some DSL services use pppoe, which is like using both dialup and
ethernet, whereas some DSL services seem to just use ethernet?

They use PPPoE, which is not dialup. It uses PPP for authentication
and to encapsulate the traffic.

I can't say why some telcos use PPPoE - the reason probably
varies between telcos. One advantage is that PPPoE gives them
more flexibility.

In an ethernet circuit, the gateway router has to be on the same
LAN segment. Either the ISP has to provide each user with a private
LAN segment, using 4 IP addresses, or it shares a LAN segment with
several users and they see each other's broadcasts, ARP requests,
etc. Use of PPP avoids this limitation, since it allows multiple
PPP links, each with a private segment, sharing use of a gateway
that forwards packets to the internet.

Doesn't this affect whether or not DSL connects automatically at
startup?

My DSL (using PPPoE) connects automatically at startup. Where is
the problem?

.