Section 33.1.3, 3 ppp over ethernet (pppoe) – Westermo RedFox Series User Manual

Page 754

Westermo OS Management Guide

Version 4.17.0-0

ried out, PPP can start to negotiate network level settings via one or more
network layer protocols. Here the PPP IP Control Protocol (IPCP[

]) is used

to negotiate IP Settings. Acting as PPP client, WeOS units will use IPCP to
acquire an IP address for the PPP interface, as well as its domain name
server(s).

Note

The domain name servers learnt via IPCP will only be used if the PPP in-
terface has lowest admin distance (see

section 19.2.6

), and if no static

domain name server is configured. Similarly, the peer will only be used
as default gateway if the PPP interface has lowest admin distance and
if no static default route has been configured.

33.1.3

PPP over Ethernet (PPPoE)

ISP with

PPPoE

Service

Ethernet or xDSL

vlan1

VLAN1006

vlan1006

WeOS Unit

PPPoE account:
identity: user@ISPexample
password: userISPsecret

VLAN 1

Internet

Figure 33.2: Example where WeOS unit routes traffic to Internet using PPPoE.

PPPoE is a protocol to establish a PPP connection over an Ethernet network. It
is commonly used when connecting to an ISP over an xDSL or Ethernet connec-
tion, since PPPoE enables the use of PPP’s features for user authentication and
dynamic IP assignment.

Fig. 33.2

shows a sample setup.

To configure PPPoE in WeOS you need to specify the following:

❼ The VLAN interface to run PPPoE over, i.e., the VLAN your upstreams xDSL

or Ethernet port is associated with. In

fig. 33.2

interface vlan1006 is used.

❼ The identity and password assigned to you by your ISP (this is the PAP/CHAP

username and password mentioned in

section 33.1.2

). In

fig. 33.2