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PPP and Asynchronous Interfaces
Document revision 1.1 (Fri Mar 05 08:16:45 GMT 2004)
This document applies to MikroTik RouterOS V2.8
Table of Contents
Table of Contents
General Information
Summary
Specifications
Related Documents
Additional Documents
Serial Port Configuration
Property Description
Notes
Example
PPP Server Setup
Description
Property Description
Example
PPP Client Setup
Description
Property Description
Notes
Example
PPP Application Example
Client - Server Setup
General Information
Summary
PPP (Point-to-Point Protocol) provides a method for transmitting datagrams over serial
point-to-point links. Physically it relies on
com1
and
com2
ports from standard PC hardware
configurations. These appear as
serial0
and
serial1
automatically. You can add more serial ports to
use the router for a modem pool using these adapters:
•
MOXA (
http://www.moxa.com
) Smartio CP-132 2-port PCI multiport asynchronous board
with maximum of 8 ports (4 cards)
•
MOXA (
http://www.moxa.com
) Smartio C104H, CP-114 or CT-114 4-port PCI multiport
asynchronous board with maximum of 16 ports (4 cards)
•
MOXA (
http://www.moxa.com
) Smartio C168H, CP-168H or CP-168U 8-port PCI multiport
asynchronous board with maximum of 32 ports (4 cards)
•
Cyclades (
http://www.cyclades.com
) Cyclom-Y Series 4 to 32 port PCI multiport
asynchronous board with maximum of 128 ports (4 cards)
Page 1 of 6
•
Cyclades (
http://www.cyclades.com
) Cyclades-Z Series 16 to 64 port PCI multiport
asynchronous board with maximum of 256 ports (4 cards)
•
TCL DataBooster 4 or 8 port High Speed Buffered PCI Communication Controllers
Specifications
Packages required:
ppp
License required:
level1
Home menu level:
/interface ppp-client, /interface ppp-server
Standards and Technologies:
PPP (RFC 1661)
Hardware usage:
Not significant
Related Documents
•
Package Management
•
Device Driver List
•
IP Addresses and ARP
•
Log Management
•
AAA
Additional Documents
•
http://www.ietf.org/rfc/rfc2138.txt?number=2138
•
http://www.ietf.org/rfc/rfc2138.txt?number=2139
Serial Port Configuration
Home menu level:
/port
Property Description
name
(
name
; default:
serialN
) - port name
used-by
(
read-only: text
) - shows the user of the port. Only free ports can be used in PPP setup
baud-rate
(
integer
; default:
9600
) - maximal data rate of the port
data-bits
(
7
|
8
; default:
8
) - number of bits per character transmitted
parity
(
none
|
even
|
odd
; default:
none
) - character parity check method
stop-bits
(
1
|
2
; default:
1
) - number of stop bits after each character transmitted
flow-control
(
none
|
hardware
|
xon-xoff
; default:
hardware
) - flow control method
Notes
Keep in mind that
baud-rate
,
data-bits
,
parity
,
stop-bits
and
flow control
parameters must be the
same for both communicating sides.
Page 2 of 6
Example
[admin@MikroTik] > /port print
# NAME
USED-BY
BAUD-RATE
0 serial0
Serial Console
9600
1 databooster1
9600
2 databooster2
9600
3 databooster3
9600
4 databooster4
9600
5 databooster5
9600
6 databooster6
9600
7 databooster7
9600
8 databooster8
9600
9 cycladesA1
9600
10 cycladesA2
9600
11 cycladesA3
9600
12 cycladesA4
9600
13 cycladesA5
9600
14 cycladesA6
9600
15 cycladesA7
9600
16 cycladesA8
9600
[admin@MikroTik] > set 9 baud-rate=38400
[admin@MikroTik] >
PPP Server Setup
Home menu level:
/interface ppp-server
Description
PPP server provides a remode connection service for users. When dialing in, the users can be
authenticated locally using the local user database in the
/user
menu, or at the RADIUS server
specified in the
/ip ppp
settings.
Property Description
port
(
name
; default:
(unknown)
) - serial port
authentication
(
multiple choice: mschap2, mschap1, chap, pap
; default:
mschap2, mschap1,
chap, pap
) - authentication protocol
profile
(
name
; default:
default
) - profile name used for the link
mtu
(
integer
; default:
1500
) - Maximum Transmission Unit. Maximum packet size to be
transmitted
mru
(
integer
; default:
1500
) - Maximum Receive Unit
null-modem
(
no
|
yes
; default:
no
) - enable/disable null-modem mode (when enabled, no modem
initialization strings are sent)
modem-init
(
text
; default:
""
) - modem initialization string. You may use "s11=40" to improve
dialing speed
ring-count
(
integer
; default:
1
) - number of rings to wait before answering phone
name
(
name
; default:
ppp-inN
) - interface name for reference
Example
You can add a PPP server using the
add
command:
Page 3 of 6
[admin@MikroTik] interface ppp-server> add name=test port=serial1
[admin@MikroTik] interface ppp-server> print
Flags: X - disabled, R - running
0 X name="test" mtu=1500 mru=1500 port=serial1
authentication=mschap2,chap,pap profile=default modem-init=""
ring-count=1 null-modem=no
[admin@MikroTik] interface ppp-server> enable 0
[admin@MikroTik] interface ppp-server> monitor test
status: "waiting for call..."
[admin@MikroTik] interface ppp-server>
PPP Client Setup
Home menu level:
/interface ppp-client
Description
The section describes PPP clients configuration routines.
Property Description
port
(
name
; default:
(unknown)
) - serial port
user
(
text
; default:
""
) - P2P user name on the remote server to use for dialout
password
(
text
; default:
""
) - P2P user password on the remote server to use for dialout
profile
(
name
; default:
default
) - local profile to use for dialout
allow
(
multiple choice: mschap2
,
mschap1
,
chap
,
pap
; default:
mschap2, mschap1, chap, pap
) -
the protocol to allow the client to use for authentication
phone
(
integer
; default:
""
) - phone number for dialout
tone-dial
(
yes
|
no
; default:
yes
) - defines whether use tone dial or pulse dial
mtu
(
integer
; default:
1500
) - Maximum Transmission Unit. Maximum packet size to be
transmitted
mru
(
integer
; default:
1500
) - Maximum Receive Unit
null-modem
(
no
|
yes
; default:
no
) - enable/disable null-modem mode (when enabled, no modem
initialization strings are sent)
modem-init
(
text
; default:
""
) - modem initialization strings. You may use "s11=40" to improve
dialing speed
dial-on-demand
(
yes
|
no
; default:
no
) - enable/disable dial on demand
add-default-route
(
yes
|
no
; default:
no
) - add PPP remote address as a default route
use-peer-dns
(
yes
|
no
; default:
no
) - use DNS server settings from the remote server
Notes
•
Additional client profiles must be configured on the server side for clients to accomplish logon
procedure. For more information see
Related Documents
section.
•
PPP client profiles must match at least partially (
local-address
and values related to
encryption should match) with corresponding remote server values.
Page 4 of 6
Example
You can add a PPP client using the
add
command:
[admin@MikroTik] interface ppp-client> add name=test user=test port=serial1 \
\... add-default-route=yes
[admin@MikroTik] interface ppp-client> print
Flags: X - disabled, R - running
0 X name="test" mtu=1500 mru=1500 port=serial1 user="test" password=""
profile=default phone="" tone-dial=yes modem-init="" null-modem=no
dial-on-demand=no add-default-route=yes use-peer-dns=no
[admin@MikroTik] interface ppp-client> enable 0
[admin@MikroTik] interface ppp-client> monitor test
[admin@MikroTik] interface ppp-client> monitor 0
status: "dialing out..."
[admin@MikroTik] interface ppp-client>
PPP Application Example
Client - Server Setup
In this example we will consider the following network setup:
For a typical server setup we need to add one user to the
R1
and configure the PPP server.
[admin@MikroTik] ppp secret> add name=test password=test local-address=3.3.3.1 \
\... remote-address=3.3.3.2
[admin@MikroTik] ppp secret> print
Flags: X - disabled
0 name="test" service=any caller-id="" password="test" profile=default
local-address=3.3.3.1 remote-address=3.3.3.2 routes=""
[admin@MikroTik] ppp secret> /int ppp-server
[admin@MikroTik] interface ppp-server> add port=serial1 disabled=no
[admin@MikroTik] interface ppp-server> print
Flags: X - disabled, R - running
0 name="ppp-in1" mtu=1500 mru=1500 port=serial1
authentication=mschap2,mschap1,chap,pap profile=default modem-init=""
ring-count=1 null-modem=no
[admin@MikroTik] interface ppp-server>
Page 5 of 6
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