Allied Telesis AT-WR4500 manual PPPoE in a multipoint wireless 802.11g network

176	AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers
	RouterOS v3 Configuration and User Guide

8.6.7 Application Examples

PPPoE in a multipoint wireless 802.11g network

In a wireless network, the PPPoE server may be attached to an Access Point (as well as to a regular station of wireless infrastructure). Either our RouterOS client or Windows PPPoE clients may connect to the Access Point for PPPoE authentication. Further, for RouterOS clients, the radio interface may be set to MTU 1600 so that the PPPoE interface may be set to MTU 1500. This optimizes the transmission of 1500 byte packets and avoids any problems associated with MTUs lower than 1500. It has not been determined how to change the MTU of the Windows wireless interface at this moment.

Let us consider the following setup where the WR4500 Wireless AP offers wireless clients transparent access to the local network with authentication:

Server	10.1.0.1/24	Internet
10.1.0.2/24

10.1.0.3/24

ether1 [PPPoE-Server] Ssid=mt

Frequency=2442

Dynamic Interfaces: pppoe-inX

10.1.0.3/24

10.1.0.200/32 10.1.0.199/32 10.1.0.198/32

Reserved for Wireless PPPoE Clients 10.1.0.100 – 10.1.0.200

Figure 26: PPPoE Example

First of all, the wireless interface should be configured:

[admin@PPPoE-Server] interface wireless> set 0 mode=ap-bridge \ frequency=2442 band=2.4ghz-b/g ssid=mt disabled=no

[admin@PPPoE-Server] interface wireless> print Flags: X - disabled, R - running

0 X name="wlan1" mtu=1500 mac-address=00:0C:42:18:5C:3D arp=enabled interface-type=Atheros AR5413 mode=ap-bridge ssid="mt" frequency=2442 band=2.4ghz-b/g scan-list=default antenna-mode=ant-a wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no default-authentication=yes default-forwarding=yes default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no

[admin@PPPoE-Server] interface wireless>