Allied Telesis AT-WR4500 manual Pptp Client Setup, Submenu level /interface pptp-client

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

Additional Resources

http://msdn.microsoft.com/library/backgrnd/html/understanding_pptp.htm

http://support.microsoft.com/support/kb/articles/q162/8/47.asp

http://support.microsoft.com/kb/154062/en-us

http://www.ietf.org/rfc/rfc2637.txt?number=2637

http://www.ietf.org/rfc/rfc3078.txt?number=3078

http://www.ietf.org/rfc/rfc3079.txt?number=3079

8.7.2 PPTP Client Setup

Submenu level: /interface pptp-client

Property Description

add-default-route(yes no; default: no) - whether to use the server which this client is connected to as its default router (gateway)

allow (multiple choice: mschap2, mschap1, chap, pap; default: mschap2, mschap1, chap, pap) - the protocol to allow the client to use for authentication

connect-to(IP address) - The IP address of the PPTP server to connect to

max-mru(integer; default: 1460) - Maximum Receive Unit. The optimal value is the MRU of the interface the tunnel is working over decreased by 40 (so, for 1500-byte Ethernet link, set the MRU to 1460 to avoid fragmentation of packets)

max-mtu(integer; default: 1460) - Maximum Transmission Unit. The optimal value is the MTU of the interface the tunnel is working over decreased by 40 (so, for 1500-byte Ethernet link, set the MTU to 1460 to avoid fragmentation of packets)

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

name (name; default: pptp-outN) - interface name for reference

password (text; default: "") - user password to use when logging to the remote server

profile (name; default: default) - profile to use when connecting to the remote server user (text) - user name to use when logging on to the remote server

￿

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 set up PPTP client named test2 using unsername john with password john to connect to the 10.1.1.12 PPTP server and use it as the default gateway:

[admin@AT-WR4562] interface pptp-client> add name=test2 connect-to=10.1.1.12 \ \... user=john add-default-route=yes password=john

[admin@AT-WR4562] interface pptp-client> print Flags: X - disabled, R - running

0 X name="test2" mtu=1460 mru=1460 connect-to=10.1.1.12 user="john" password="john" profile=default add-default-route=yes allow=pap,chap,mschap1,mschap2

[admin@AT-WR4562] interface pptp-client> enable 0