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CISCO 2511 - Dialin access / DTR

 
 
robert mcfadzien
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Posts: n/a
 
      07-15-2003
hi

i have a 2511 access server with 8 rockwell based external modems
connected for dialin access.

When initialising the modems via a chat-script, they initialiase ok
but the DTR is not restored. dialing into each modem the first time,
the PPP authetication will fail (no authentication is performed).

After dialing into each modem once, the debug modem displays the DTR
being restored:

..Jul 15 06:38:16.541 UTC: TTY3: restoring DTR

Once its restored, authentication works ok.

If I have a chat-script execute after each session (script reset), the
modems lose DTR after each call, requiring a connection before
restoring.

below are parts of my config, any help would be appreciated.

isco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-I-L), Version 12.0(10), RELEASE SOFTWARE
(fc1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Mon 20-Mar-00 21:43 by phanguye
Image text-base: 0x0302F35C, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c),
RELEASE SOFTWARE (fc1)

ait-dama uptime is 1 week, 4 days, 8 hours, 27 minutes
System restarted by reload at 22:22:34 UTC Thu Jul 3 2003
System image file is "flash:c2500-i-l.120-10.bin"

cisco 2511 (68030) processor (revision M) with 6144K/2048K bytes of
memory.
Processor board ID 20610076, with hardware revision 00000000
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
16 terminal line(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102



interface Group-Async1
ip unnumbered Ethernet0
no ip directed-broadcast
encapsulation ppp
ip tcp header-compression passive
async mode dedicated
peer default ip address pool setup_pool
no cdp enable
ppp authentication pap
group-range 1 7

line 1 8
session-timeout 120 output
exec-timeout 0 30
autoselect during-login
autoselect ppp
script startup dyna-init-save
modem Dialin
autocommand ppp
transport input all
escape-character NONE
stopbits 1
speed 115200
flowcontrol hardware
 
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Aaron Leonard
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Posts: n/a
 
      07-16-2003
Not sure, but "script startup" and "script reset"
have often had some bugs when being used to configure modems.
It is recommended to use modem autoconfigure for this instead.
See http://www.cisco.com/univercd/cc/td/...em.htm#1041895

Aaron

---

~ hi
~
~ i have a 2511 access server with 8 rockwell based external modems
~ connected for dialin access.
~
~ When initialising the modems via a chat-script, they initialiase ok
~ but the DTR is not restored. dialing into each modem the first time,
~ the PPP authetication will fail (no authentication is performed).
~
~ After dialing into each modem once, the debug modem displays the DTR
~ being restored:
~
~ .Jul 15 06:38:16.541 UTC: TTY3: restoring DTR
~
~ Once its restored, authentication works ok.
~
~ If I have a chat-script execute after each session (script reset), the
~ modems lose DTR after each call, requiring a connection before
~ restoring.
~
~ below are parts of my config, any help would be appreciated.
~
~ isco Internetwork Operating System Software
~ IOS (tm) 2500 Software (C2500-I-L), Version 12.0(10), RELEASE SOFTWARE
~ (fc1)
~ Copyright (c) 1986-2000 by cisco Systems, Inc.
~ Compiled Mon 20-Mar-00 21:43 by phanguye
~ Image text-base: 0x0302F35C, data-base: 0x00001000
~
~ ROM: System Bootstrap, Version 11.0(10c), SOFTWARE
~ BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c),
~ RELEASE SOFTWARE (fc1)
~
~ ait-dama uptime is 1 week, 4 days, 8 hours, 27 minutes
~ System restarted by reload at 22:22:34 UTC Thu Jul 3 2003
~ System image file is "flash:c2500-i-l.120-10.bin"
~
~ cisco 2511 (68030) processor (revision M) with 6144K/2048K bytes of
~ memory.
~ Processor board ID 20610076, with hardware revision 00000000
~ Bridging software.
~ X.25 software, Version 3.0.0.
~ 1 Ethernet/IEEE 802.3 interface(s)
~ 2 Serial network interface(s)
~ 16 terminal line(s)
~ 32K bytes of non-volatile configuration memory.
~ 8192K bytes of processor board System flash (Read ONLY)
~
~ Configuration register is 0x2102
~
~
~
~ interface Group-Async1
~ ip unnumbered Ethernet0
~ no ip directed-broadcast
~ encapsulation ppp
~ ip tcp header-compression passive
~ async mode dedicated
~ peer default ip address pool setup_pool
~ no cdp enable
~ ppp authentication pap
~ group-range 1 7
~
~ line 1 8
~ session-timeout 120 output
~ exec-timeout 0 30
~ autoselect during-login
~ autoselect ppp
~ script startup dyna-init-save
~ modem Dialin
~ autocommand ppp
~ transport input all
~ escape-character NONE
~ stopbits 1
~ speed 115200
~ flowcontrol hardware

 
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