Netopia 2e-h-w 사용자 가이드
Cayman 2E-H-W User’s Guide
How Your Cayman 2E-H-W Works
November 2000
C-13
About PPP over
Ethernet (PPPoE)
Ethernet (PPPoE)
PPP (Point-to-Point Protocol) over Ethernet is an emerging
technology that lets a personal computer or network connect with
a high-speed data network over a cable or xDSL modem.
technology that lets a personal computer or network connect with
a high-speed data network over a cable or xDSL modem.
Advantages of
PPPoE
PPPoE
PPPoE simplifies deployment of high-speed networks. PPPoE
provides access to high-speed (xDSL or cable modem) networks
while preserving familiar dial-up models for Internet access.
Consequently, users and ISPs can transition from dial-up
network access to PPPoE network access quickly and
inexpensively.
provides access to high-speed (xDSL or cable modem) networks
while preserving familiar dial-up models for Internet access.
Consequently, users and ISPs can transition from dial-up
network access to PPPoE network access quickly and
inexpensively.
PPPoE integrates easily into dial-up ISP infrastructure. Carriers
and ISPs who are moving from a dial-up network base to a
broadband network base can continue using their existing
authentication, billing, access control, and IP address
management models.
and ISPs who are moving from a dial-up network base to a
broadband network base can continue using their existing
authentication, billing, access control, and IP address
management models.
PPPoE requires no additional knowledge on the part of the end
user other than that needed for traditional dial-up Internet
access. Multiple users can share a broadband connection
without additional support or training costs, making PPPoE ideal
for small offices/home offices.
user other than that needed for traditional dial-up Internet
access. Multiple users can share a broadband connection
without additional support or training costs, making PPPoE ideal
for small offices/home offices.
Cayman’s implementation of PPPoE is compatible with
networking products from Shasta/Nortel, Redback Networks,
and other standard industry PPPoE servers.
networking products from Shasta/Nortel, Redback Networks,
and other standard industry PPPoE servers.
PPP over Ethernet
Stages
Stages
A PPPoE connection has two stages: a Discovery stage and a PPP
Session stage.
Session stage.
Discover Stage
The Discovery stage of a PPPoE session consists of four steps:
1.
Initiation – When a host wants to open a PPPoE session, it
sends out a PPPoE Active Discovery Initiation (PADI) broadcast
asking any available Access Concentrators to respond. If a host
sends out a PPPoE Active Discovery Initiation (PADI) broadcast
asking any available Access Concentrators to respond. If a host