From: Lachberg (samlach@xxxxxxx)
Date: Fri May 05 2000 - 12:43:30 GMT-3
Dont know if this is a working config, but it's from the doc homepage, case
studies:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/cs008.htm#xtocid278589
Configuring Callback
Because Dave is located several miles from the central office, calls
to the central office router are metered and billed to Dave's
telephone number. The callback feature (introduced in Cisco IOS 11.0)
allows Dave's router to place a call to the central site router
requesting that the central site router call Dave's router. Then the
central site router disconnects the call and places a return call to
Dave's router.With callback configured, Dave's telephone bill is
reduced because actual data transfers occur when the central office
router calls back. The following commands configure callback on Dave's
router:
interface bri 0
ppp callback request
dialer hold-queue 100 timeout 20
The ppp callback interface configuration command with the request
keyword specifies that when the interface places a call, it is to
request callback. The dialer hold-queue interface configuration
command specifies that up to 100 packets can be held in a queue until
the central site router returns the call. If the central site router
does not return the call within 20 seconds plus the length of the
enable timeout configured on the central site router, the packets are
dropped. The following commands configure callback on the central
office router:
map-class dialer class1
dialer callback-server username
interface serial 1/0:23
dialer map ip 11.108.90.1 name dave-isdn speed 56 class class1 914085553680
ppp callback accept
dialer callback-secure
dialer enable-timeout 1
dialer hold-queue
The map-class global configuration command establishes a quality of
service (QoS) parameter that is to be associated with a static map.
The dialer keyword specifies that the map is a dialer map. The class1
parameter is a user-defined value that creates a map class to which
subsequent encapsulation specific commands apply.
The dialer map interface configuration command has been modified to
include the class keyword and the name of the class, as specified in
the map-class command. The name keyword is required so that, when
Dave's router dials in, the interface can locate this dialer map
statement and obtain the dial string for calling back Dave's router.
The ppp callback interface configuration command with the accept
keyword allows the interface to accept and honor callback requests
that come into the interface. (Callback depends on PPP authentication,
using PAP or CHAP.)
The dialer callback-server map class configuration command allows the
interface to return calls when callback is successfully negotiated.
The username keyword specifies that the interface is to locate the
dial string for making the return call by looking up the authenticated
host name in a dialer map command.
The dialer callback-secure interface configuration command specifies
that the router is to disconnect the initial call, and call back only
if it has a dialer map command with a defined class for the remote
router. If the dialer callback-secure command is not present, the
central router will not drop the connection if it does not have a
dialer map command with a defined class. The dialer enable-timeout
interface configuration command specifies that the interface is to
wait one second after disconnecting the initial call before making the
return call.
----- Original Message -----
From: Brad Johnson
To: ccielab
Sent: Saturday, May 06, 2000 7:55 AM
Subject: isdn callback
does anyone have a working config for isdn callback? If so, could
you send me a copy, thanks
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:23:27 GMT-3