Async connect

From: wing_lam@jossynergy.com
Date: Mon Jun 30 2003 - 11:44:02 GMT-3


Hi group,

I am just entry in async dialup, sorry to ask the following simple
question:

-- I am setting the following lab scenario, I have a router "R26" and a
router "REMOTEGW":

R26 (Aux 0) -- (modem) ----------(PSTN)-------------- (modem) -- (Line tty
8) Remote
                        phone no 5413
phone no 5001

And I would like to setup routing by async dialup, I have tested at each
router by reverse telnet that the remote modems can be reached, by
"ATDT5001" & "ATDT5413"

The following is my two routers config, I cannot get it to be worked (I
cannot ping the other end)

1) R26

chat-script dial "" "ATZ&F" OK "ATDT 5413" TIMEOUT 60 CONNECT

interface Async65
 ip address 192.168.20.1 255.255.255.0
 encapsulation ppp
 dialer in-band
 dialer map ip 192.168.20.2 name REMOTEGW broadcast 5413
 dialer-group 1
 autodetect encapsulation ppp
 async dynamic routing
 async mode interactive
 ppp authentication chap
!
line aux 0
 script dialer dial
 modem InOut
 modem autoconfigure discovery
 no exec
 transport input all
 speed 115200
 flowcontrol hardware

2) REMOTEGW

chat-script dial "" "ATZ&F" OK "ATDT5001" TIMEOUT 60 CONNECT

interface Async8
 ip address 192.168.20.2 255.255.255.0
 no ip directed-broadcast
 encapsulation ppp
 dialer in-band
 dialer map ip 192.168.20.1 name R26 broadcast 5001
 dialer-group 1
 autodetect encapsulation ppp
 async dynamic routing
 async mode interactive
 ppp authentication chap

line 8
 no exec
 script dialer dial
 modem InOut
 modem autoconfigure discovery
 transport input all
 speed 115200

The following is my debug, you can see that even the async interface is up
(it takes aroung 30 secounds so I keep ping it), PING still not success.

REMOTEGW#p 192.168.20.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:

8w5d: Async8 DDR: Dialing cause ip (s=192.168.20.2, d=192.168.20.1)
8w5d: Async8 DDR: Attempting to dial 5001
8w5d: CHAT8: Attempting async line dialer script
8w5d: CHAT8: Dialing using Modem script: dial & System script: none
8w5d: CHAT8: process started
8w5d: CHAT8: Asserting DTR
8w5d: CHAT8: Chat script dial started.....
Success rate is 0 percent (0/5)
REMOTEGW#p 192.168.20.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
REMOTEGW#
8w5d: CHAT8: Chat script dial finished, status = Success
8w5d: TTY8: destroy timer type 1
8w5d: TTY8: destroy timer type 0
8w5d: %LINK-3-UPDOWN: Interface Async8, changed state to up
REMOTEGW#p 192.168.20.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
REMOTEGW#

Any insight about this? I find that the modem will ring three times before
response to the call, is it the fatal problem? Or I have to make the modem
to certain operation mode so that for async routing to work?

Thx a lot!
BBD (Big Black Dog)

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