Alcatel-Lucent ALU-Dm 744-I User manual

Dial Routing
ALU-Dm 744-I
Copyright© Version 11.00 Alcatel-Lucent Enterprise
Alcatel-Lucent Enterprise Manual
Dial Routing 1

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ply or use of this manual.
Manual Alcatel-Lucent Enterprise
2 Dial Routing

Table of Contents
I RelatedDocuments................................. 1
Chapter1 Introduction..................................... 2
1.1 DialRoutingInterface.................................. 2
1.2 StaticRoutesID.................................... 2
1.3 Function........................................ 2
1.4 Configuringcorrectly.................................. 3
1.5 ConfigurationProcedure................................. 3
1.5.1 Creatinginterfaces................................... 3
1.5.2 Configuring the Dial Routing Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5.3 Configuring the AT Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.5.4 Configuring the ISDN Interfaces (BRI) . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.5.5 Configuring the PPP Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.5.6 ConfiguringIP.................................... 24
1.5.7 AddingIDstaticroutes ................................ 26
1.5.8 ConfigurationSummary................................ 26
Chapter2 Configuration................................... 31
2.1 Dial Routing Interface Configuration Commands . . . . . . . . . . . . . . . . . . . . . 31
2.1.1 Configuringconnections................................ 31
2.1.2 Configuring the pool name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.1.3 Configuring the quarantine time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.1.4 Configuring the IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.1.5 Displaying the configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.1.6 Return to the previous menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.2 ID Static Routes Configuration Commands . . . . . . . . . . . . . . . . . . . . . . . . 34
2.2.1 Adding a static route with identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.2.2 Deleting a static route with identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
2.2.3 Listing configured ID routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter3 Monitoring..................................... 36
3.1 Monitoring the Dial Routing Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.1.1 ?(HELP) ...................................... 36
3.1.2 Displaying the monitoring information . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.1.3 Return to the previous menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.2 Monitoring the ID Static Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.2.1 ActiveroutesTable.................................. 38
3.2.2 Calculatingthenexthop................................ 39
3.2.3 StaticroutesTable.................................. 39
Alcatel-Lucent Enterprise Table of Contents
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Table of Contents Alcatel-Lucent Enterprise
ii Dial Routing

I Related Documents
ALU-Dm 702-I TCP/IP
ALU-Dm 705-I Generic Serial Interfaces
ALU-Dm 710-I PPP Interface
ALU-Dm 729-I BRI ISDN Interface
ALU-Dm 772-I Common Configurations for Interfaces
Alcatel-Lucent Enterprise Related Documents
Dial Routing 1

Chapter 1 Introduction
1.1 Dial Routing Interface
The Dial Routing interface is a virtual interface that distributes IP traffic via a pool of “Dial PPP” interfaces. A series of
connections is defined in the configuration of the said interface such as the Dial PPP interfaces pool name. Each pro-
file has an identifier (ID) which uniquely identifies this as well as a set of associated parameters (called number, user
and password). Each Dial PPP interface can be registered in the pool through configuration. On enabling the Dial
Routing facility, you need to introduce the pool name configured within the Dial Routing interface.
1.2 Static Routes ID
The static routes ID are static routes whose next hop is a Dial Routing interface with an extra parameter: the ID
(profile identifier). By default, these routes have cost 3 assigned.
1.3 Function
Through the combination of the static routes ID and the Dial Routing interface, you can make the router act as a Dial
PPP connections server. Supposing we have the following network:
In the connections server, you add as many routes ID as distinct BRANCHES networks that exist. In the example
case, supposing we add a route to the LAN network of each branch (A1, A2 …..An). If a device located in network S
needs to address branch X LAN (AX), the IP packets exit with source S with destination AX, will reach the connec-
tions server in the first hop. In the initial state, assuming that an alternative lower cost route to the said destination
network does not exist, the first IP packet uses the route ID. This packet will pass to the specified Dial Routing inter-
face in the next route hop together with the ID. The Dial Routing interface will check if the said ID is in use and in
contrary cases will search for a free PPP Dial interface among those that are registered. If one is found, this will re-
serve it, dynamically configured it with the ID profile parameters and will run over all the routes IDs whose next hop is
the Dial Routing interface and whose ID is the past ID and will add for each of these a static route dynamically cre-
ated with the same destination and mask, but with the next hop being the reserved Dial PPP interface and with cost
1. The rest of the IP packets will use the new static route. When the call is released due to release time without data
or due to another cause, this dynamically created static route will disappear.
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1.4 Configuring correctly
• Create as many PPP interfaces as B channels or modem connections you wish to reserve for the connections (you
create as many simultaneous connections as you wish to have).
• Create the Dial Routing interface.
• From the Dial Routing interface configuration, add as many connections as existing destinations. Each profile is
composed of a unique identifier, an ISDN telephone number, a login and a password; these parameters must be
the parameters of the branch they represent.
• From the Dial Routing interface configuration, configure the connections pool name.
• From the configuration for each Dial PPP that you wish to participate in the pool, enable the Dial Routing facility
and configure the same pool name as assigned in the previous step.
• Add unnumbered addresses to the PPP and Dial Routing interfaces. Configure the internal IP address. Enable IP
Classless.
• Add static routes ID: destination and mask corresponding to the each branch’s network, next hop the Dial Routing
interface and ID corresponding to the profile associated to the said branch.
• If a determined branch has more than one network, you can configure as many routes ID (with the same ID) as dis-
tinct networks pertaining to the branch.
Configuration of the connections and the routes ID is dynamic: you do not need to restart the device.
1.5 Configuration Procedure
Below, you can see through an example, the sequence of steps required to establish an adequate configuration for a
typical scenario where you need to access networks located through PSTN and ISDN connections. The following fig-
ure displays the user scenario in the example.
The steps required to carry out the configuration of the previous graphic connections server are as follows:
In this example, we start from the router default configuration, which will act as the connections server, however you
can use any router that possesses this function.
1.5.1 Creating interfaces
The first step is to decide which interfaces are required for the said scenario:
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• You need to configure as AT interfaces as many serial lines as simultaneous connections to PSTN destinations are
required without surpassing the number of modems you have. Additionally you need to create a PPP interface for
each AT interface. In the example we have two modems and assume that you wish to use both. Therefore, config-
ure line 1 and 2 as AT interfaces and add two PPP interfaces that will operate over the said AT interfaces.
• You need to create as many PPP interfaces as simultaneous connections to ISDN destinations as required without
surpassing the number of ISDN B channels you have available. In this example we have a BRI interface with two B
channels and assume that both will be used in this scenario. Therefore create two more PPP interfaces to operate
over the two BRI interface B channels. This does not mean that later we can’t configure more connections (as we
are going to do, as this is the objective of dial-routing), it’s simply that we are limiting those that can be simultan-
eous to two.
• Additionally, you need to configure a Dial Routing interface that manages the PSTN connections and uses the PPP
interfaces that operate over AT and another that manages the connections with ISDN destinations using the PPPs
that are configured to operate over the BRI interface.
In short, you need to configure lines 1 and 2 as AT interfaces and add four PPP interfaces and two Dial Routing.
Below you can see the result of executing the SHOW CONFIG command with the aim of getting the device configur-
ation in text mode. Further down the configuration of the interfaces is also shown so you can see which interfaces
are already available and which ones require changes.
*config
Config>show config
; Showing System Configuration for access-level 15 ...
; OA5058 Router
log-command-errors
no configuration
set data-link x25 serial0/0
set data-link x25 serial0/1
set data-link x25 serial0/2
;
;
network ethernet0/0
; -- Ethernet Interface User Configuration --
no ip address
;
exit
;
;
;
network x25-node
; -- X25-node interface configuration --
no ip address
;
exit
;
;
;
dump-command-errors
end
; --- end ---
Config>list devices
Interface Connector Type of interface
ethernet0/0 LAN1 Fast Ethernet interface
serial0/0 SERIAL0/WAN1 X25
serial0/1 SERIAL1/WAN2 X25
serial0/2 SERIAL2/WAN3 X25
bri0/0 BRI/ISDN1 ISDN Basic Rate Int
x25-node --- Router->Node
Config>
As you can see the serial lines are in X.25 mode and therefore require changing. Additionally you do not have any
PPP interfaces or Dial Routing which means these need to be added.
The following sequence of commands shows how to execute this operation. Firstly you need to add the PPP inter-
faces.
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Config>add device ppp 1
Config>add device ppp 2
Config>add device ppp 3
Config>add device ppp 4
Config>list devices
Interface Connector Type of interface
ethernet0/0 LAN1 Fast Ethernet interface
serial0/0 SERIAL0/WAN1 X25
serial0/1 SERIAL1/WAN2 X25
serial0/2 SERIAL2/WAN3 X25
bri0/0 BRI/ISDN1 ISDN Basic Rate Int
x25-node --- Router->Node
ppp1 --- Generic PPP
ppp2 --- Generic PPP
ppp3 --- Generic PPP
ppp4 --- Generic PPP
Config>
Subsequently, the Dial Routing interfaces are created.
Config>add device dial-routing 1
Config>add device dial-routing 2
Config>list devices
Interface Connector Type of interface
ethernet0/0 LAN1 Fast Ethernet interface
serial0/0 SERIAL0/WAN1 X25
serial0/1 SERIAL1/WAN2 X25
serial0/2 SERIAL2/WAN3 X25
bri0/0 BRI/ISDN1 ISDN Basic Rate Int
x25-node --- Router->Node
ppp1 --- Generic PPP
ppp2 --- Generic PPP
ppp3 --- Generic PPP
ppp4 --- Generic PPP
dialroute1 --- Dial Routing
dialroute2 --- Dial Routing
Config>
And finally, change the serial lines configuration.
Config>set data-link at serial0/0
Config>set data-link at serial0/1
Config>list devices
Interface Connector Type of interface
ethernet0/0 LAN1 Fast Ethernet interface
serial0/0 SERIAL0/WAN1 AT COM
serial0/1 SERIAL1/WAN2 AT COM
serial0/2 SERIAL2/WAN3 X25
bri0/0 BRI/ISDN1 ISDN Basic Rate Int
x25-node --- Router->Node
ppp1 --- Generic PPP
ppp2 --- Generic PPP
ppp3 --- Generic PPP
ppp4 --- Generic PPP
dialroute1 --- Dial Routing
dialroute2 --- Dial Routing
Config>
Below you can see the results of the configuration, once the interfaces have been created, in text mode.
Config>show config
; Showing System Configuration for access-level 15 ...
; OA5058 Router
log-command-errors
no configuration
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add device ppp 1
add device ppp 2
add device ppp 3
add device ppp 4
add device dial-routing 1
add device dial-routing 2
set data-link at serial0/0
set data-link at serial0/1
set data-link x25 serial0/2
;
;
network ethernet0/0
; -- Ethernet Interface User Configuration --
no ip address
;
exit
;
;
;
network x25-node
; -- X25-node interface configuration --
no ip address
;
exit
;
;
;
network ppp1
; -- Generic PPP User Configuration --
no ip address
;
exit
;
;
;
network ppp2
; -- Generic PPP User Configuration --
no ip address
;
exit
;
;
;
network ppp3
; -- Generic PPP User Configuration --
no ip address
;
exit
;
;
;
network ppp4
; -- Generic PPP User Configuration --
no ip address
;
exit
;
;
;
network dialroute1
; -- DR interface configuration --
no ip address
;
exit
;
;
;
1 Introduction Alcatel-Lucent Enterprise
6 Dial Routing