Allied Telesis AT-WR4500 manual Admin@AT-WR4562 interface pppoe-server server

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

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If no service name is specified in WindowsXP, it will use only service with no name. So if you want to serve WindowsXP clients, leave your service name empty.

Property Description

authentication (multiple choice: mschap2 mschap1 chap pap; default: mschap2, mschap1, chap, pap) - authentication algorithm

default-profile(name; default: default) - default user profile to use interface (name) - interface, which the clients are connected to

keepalive-timeout(time; default: 10) - defines the time period (in seconds) after which the router is starting to send keepalive packets every second. If no traffic and no keepalive responses has came for that period of time (i.e. 2 * keepalive-timeout), not responding client is proclaimed disconnected. max-mru(integer; default: 1480) - Maximum Receive Unit. The optimal value is the MTU of the interface the tunnel is working over decreased by 20 (so, for 1500-byte Ethernet link, set the MTU to 1480 to avoid fragmentation of packets)

max-mtu(integer; default: 1480) - Maximum Transmission Unit. The optimal value is the MTU of the interface the tunnel is working over decreased by 20 (so, for 1500-byte Ethernet link, set the MTU to 1480 to avoid fragmentation of packets)

max-sessions(integer; default: 0) - maximum number of clients that the AC can serve 0 - unlimited

mrru (integer: 512..65535; default: disabled) - maximum packet size that can be received on the link. If a packet is bigger than tunnel MTU, it will be split into multiple packets, allowing full size IP or Ethernet packets to be sent over the tunnel

disabled - disable MRRU on this link

one-session-per-host(yes no; default: no) - allow only one session per host (determined by MAC address). If a host will try to establish a new session, the old one will be closed

service-name(text) - the PPPoE service name

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The default keepalive-timeout value of 10 is OK in most cases. If you set it to 0, the router will not disconnect clients until they log out or router is restarted. To resolve this problem, the one-session-per- host property can be used.

Security issue: do not assign an IP address to the interface you will be receiving the PPPoE requests on Specifying MRRU means enabling MP (Multilink PPP) over single link. This protocol is used to split big packets into smaller ones. Under Windows it can be enabled in Networking tag, Settings button, "Negotiate multi-link for single link connections". Their MRRU is hardcoded to 1614. This setting is usefull to overcome PathMTU discovery failures. The MP should be enabled on both peers..

Example

To add PPPoE server on ether1 interface providing ex service and allowing only one connection per host:

[admin@AT-WR4562] interface pppoe-server server> add interface=ether1 \ \... service-name=ex one-session-per-host=yes

[admin@AT-WR4562] interface pppoe-server server> print Flags: X - disabled

0 X service-name="ex" interface=ether1 mtu=1480 mru=1480 authentication=mschap2,mschap,chap,pap keepalive-timeout=10 one-session-per-host=yes default-profile=default

[admin@AT-WR4562] interface pppoe-server server>