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RAS question : Modem isn't answer the incomming call

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  • RAS question : Modem isn't answer the incomming call

    hi all, can any one tell me what am I wrong with this configuration :


    Building configuration...

    Current configuration:
    !
    version 12.0
    service timestamps debug uptime
    service timestamps log uptime
    no service password-encryption
    !
    hostname PlantRouter
    !
    aaa new-model
    aaa authentication login default local
    aaa authentication login no_login none
    aaa authentication ppp default local
    enable secret 5 <deleted>
    !
    username remote password 0 abc123
    !
    !
    !
    !
    ip subnet-zero
    ip host modem1 2001 192.168.1.250
    !
    !
    !
    process-max-time 200
    !
    interface Ethernet0
    description Connect to Plant LAN
    ip address 192.168.1.250 255.255.255.0
    no ip directed-broadcast
    !
    interface Serial0
    description Connect to Ha Noi Site
    ip address 192.168.250.6 255.255.255.252
    no ip directed-broadcast
    !
    interface Serial1
    no ip address
    no ip directed-broadcast
    shutdown
    !
    interface Group-Async1
    ip unnumbered Ethernet0
    no ip directed-broadcast
    encapsulation ppp
    ip tcp header-compression
    async default routing
    async mode interactive
    peer default ip address pool DialUpPool
    ppp authentication pap
    group-range 1 16
    !
    ip local pool DialUpPool 192.168.1.230 192.168.1.245
    ip default-gateway 192.168.1.250
    ip classless
    ip route 0.0.0.0 0.0.0.0 Serial0
    no ip http server
    !
    !
    line con 0
    login authentication no_login
    transport input none
    line 1 16
    autoselect during-login
    autoselect ppp
    modem InOut
    modem autoconfigure discovery
    transport input all
    stopbits 1
    speed 115200
    line aux 0
    line vty 0 4
    !
    end

    PlantRouter#

    The trouble here is modem isn't answer the incomming call, modem Auto Answer turned on already. Reverse telnet to modem worked well, i can use AT command, did reseting to factory default, turn on AA and other settings, modem are Hayes Accura V.92 (http://www.hayes.co.uk), router is Cisco-2511, following are information issued by show version command :
    ------------

    sh ver
    Cisco Internetwork Operating System Software
    IOS (tm) 2500 Software (C2500-I-L), Version 12.0(5)T, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-1999 by cisco Systems, Inc.
    Compiled Fri 23-Jul-99 03:14 by kpma
    Image text-base: 0x03039754, data-base: 0x00001000

    ROM: System Bootstrap, Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1)
    BOOTFLASH: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB1, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1)

    PlantRouter uptime is 1 hour, 45 minutes
    System returned to ROM by power-on
    System image file is "flash:c2500-i-mz_120-5_t.bin"

    cisco 2511 (68030) processor (revision K) with 2048K/2048K bytes of memory.
    Processor board ID 01499917, 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

    PlantRouter#
    --------------------------
    I am in a boring world now, this is not first time I meet this trouble... :(
    TIA
    Cheer !

  • #2
    hi,

    bạn thử turn-on debug lên, capture output và post it here.

    #debug dialer
    #debug ppp authentication
    #debug ppp negotiation

    Ngoài ra, bạn có thể đặt interface Group-Async về dedicated mode:

    # async mode dedicated

    let me know asap,
    Đặng Quang Minh, CCIEx2#11897 (Enterprise Infrastructure, Wireless), DEVNET, CCSI#31417

    Email : dangquangminh@vnpro.org
    https://www.facebook.com/groups/vietprofessional/

    Comment


    • #3
      OK, I am do it immediatly, hope you still here ...
      btw...I am aliosha on routerie.com, are you remember ?
      Cheer !

      Comment


      • #4
        I did it but it isn't show up anything on console screen , what i need to do now ?
        Cheer !

        Comment


        • #5
          hi there,

          glad to hear from you!

          Current configuration:
          !
          version 12.0
          service timestamps debug uptime
          service timestamps log uptime
          no service password-encryption
          !
          hostname PlantRouter
          !
          aaa new-model
          aaa authentication login default local
          aaa authentication login no_login none
          aaa authentication ppp default local
          enable secret 5 <deleted>
          !
          username remote password 0 abc123
          ip subnet-zero
          ip host modem1 2001 192.168.1.250
          process-max-time 200
          !
          interface Ethernet0
          description Connect to Plant LAN
          ip address 192.168.1.250 255.255.255.0
          no ip directed-broadcast
          !
          interface Serial0
          description Connect to Ha Noi Site
          ip address 192.168.250.6 255.255.255.252
          no ip directed-broadcast
          !
          interface Group-Async1
          ip unnumbered Ethernet0
          no ip directed-broadcast
          encapsulation ppp
          ip tcp header-compression
          async mode dedicated
          peer default ip address pool DialUpPool
          ppp authentication pap
          group-range 1 16
          !
          ip local pool DialUpPool 192.168.1.230 192.168.1.245
          ip default-gateway 192.168.1.250
          ip classless
          ip route 0.0.0.0 0.0.0.0 Serial0
          no ip http server
          !
          !
          line con 0
          login authentication no_login
          logging synchronous
          transport input none
          line 1 16
          login
          modem InOut
          modem autoconfigure discovery
          transport input all
          stopbits 1
          flow-control hardware
          speed 115200

          line aux 0
          line vty 0 4
          !
          end
          --------------------
          Try this and lemme know.....

          Just call my name, I'll be there ;-)
          Đặng Quang Minh, CCIEx2#11897 (Enterprise Infrastructure, Wireless), DEVNET, CCSI#31417

          Email : dangquangminh@vnpro.org
          https://www.facebook.com/groups/vietprofessional/

          Comment


          • #6
            man, it still doesn't answer and don't show up any debug info. :(
            Cheer !

            Comment


            • #7
              Re: RAS question : Modem isn't answer the incomming call

              okay,

              first, these debug commands pop up messages to the console if you try to dial to the router. So make sure you turn on these command and try to dial to the access-server.

              Here's a check-list for you:

              1. Did you turn-on the modem?
              2. Can you reverse-telnet to the modem?
              3. From the modem, can you dial outside by using the modem atdt command.
              For example:
              atz
              atdt xxxxx
              4. Try debug modem and show the output.
              5. Use local database for authencation first. I mean:

              #no aaa new-model
              6. Did you access to the router via console or telnet? Output of the debug commands should be on the console.
              7. What did you use to dial to the access-server? From a workstation or from another router?

              I will come back soon,
              Đặng Quang Minh, CCIEx2#11897 (Enterprise Infrastructure, Wireless), DEVNET, CCSI#31417

              Email : dangquangminh@vnpro.org
              https://www.facebook.com/groups/vietprofessional/

              Comment


              • #8
                Re: RAS question : Modem isn't answer the incomming call

                Originally posted by dangquangminh
                okay,

                first, these debug commands pop up messages to the console if you try to dial to the router. So make sure you turn on these command and try to dial to the access-server.

                Here's a check-list for you:

                1. Did you turn-on the modem?
                Surely !

                2. Can you reverse-telnet to the modem?
                I can and also authenticated with local users database ( with AAA enabled )

                3. From the modem, can you dial outside by using the modem atdt command.
                For example:
                atz
                atdt xxxxx
                Work well

                4. Try debug modem and show the output.
                I issued 'debug modem' command and it only show router trying to discovery modem configuration from TTY5 to TTY16. noted here, I just have 4 modem but only 1 phone line pluged to TTY1 already ( 4 modems pluged in to router from TTY1 to TTY4)

                5. Use local database for authencation first. I mean:
                #no aaa new-model
                Before enbale AAA i successded with local authen via telnet
                6. Did you access to the router via console or telnet? Output of the debug commands should be on the console.
                I used both console and telnet

                7. What did you use to dial to the access-server? From a workstation or from another router?
                I used win2k client to dial, use phone to make a call, bot of us won't work :(

                This router will serve dialup users ( client OSes are Window98/Me/XP/2k)

                Thanks,
                Cheer !

                Comment


                • #9
                  Re: RAS question : Modem isn't answer the incomming call

                  okay okay,

                  Để em đóng case này lại giúp anh Minh.

                  1. Theo chairuou mô tả thì kết nối từ router đến modem là ok. Do chairuou có thể thực hiện reversetelnet.
                  2. Quá trình authentication trước khi dùng aaa là ok. Do đó problem nằm ở chổ cấu hình aaa sai.
                  3. Anh chairuou cho biết là anh có thể telnet vào router dùng aaa. Do đó anh kết luận cấu hình aaa của anh là đúng. Kết luận này là không chính xác. PPP authentication ppp được xem là một service khác của AAA (có khoảng 5 loại service).
                  Đây là một cấu hình cho anh chairuou:

                  router# aaa authentication ppp dialup radius local
                  router# aaaa authentication login admins local
                  router#line 1 16
                  router(config-line)# auto select ppp
                  router(config-line)#autoselect during-login
                  router(config-line)#login authentication admins
                  router(config-line)#interface group-async 1
                  router(config-if)# encapsulation ppp

                  router(config-if)# ppp authen ppp dialup

                  Vậy, anh chairuou thử lại cấu hình AAA như trên nhé. Các cấu hình cho phần line đừng thay đổi.

                  Chúc anh thành công,

                  Comment


                  • #10
                    Re: RAS question : Modem isn't answer the incomming call

                    Originally posted by sinhvienngheo
                    okay okay,

                    Để em đóng case này lại giúp anh Minh.

                    1. Theo chairuou mô tả thì kết nối từ router đến modem là ok. Do chairuou có thể thực hiện reversetelnet.
                    2. Quá trình authentication trước khi dùng aaa là ok. Do đó problem nằm ở chổ cấu hình aaa sai.
                    3. Anh chairuou cho biết là anh có thể telnet vào router dùng aaa. Do đó anh kết luận cấu hình aaa của anh là đúng. Kết luận này là không chính xác. PPP authentication ppp được xem là một service khác của AAA (có khoảng 5 loại service).
                    Đây là một cấu hình cho anh chairuou:

                    router# aaa authentication ppp dialup radius local
                    router# aaaa authentication login admins local
                    router#line 1 16
                    router(config-line)# auto select ppp
                    router(config-line)#autoselect during-login
                    router(config-line)#login authentication admins
                    router(config-line)#interface group-async 1
                    router(config-if)# encapsulation ppp

                    router(config-if)# ppp authen ppp dialup

                    Vậy, anh chairuou thử lại cấu hình AAA như trên nhé. Các cấu hình cho phần line đừng thay đổi.

                    Chúc anh thành công,
                    anyway thank, I resolve my prob.
                    sinhvienngheo : trouble not is aaa, and config you show me here just for ppp authen, relook my 1st config above, that config use local authen for login service & ppp and my question is MODEM INS'T ANSWER THE INCOMMING CALL not AUTHENTICATION.

                    Last time, after did some check with callin and out via phone, I addressed the problem is phone line has trouble, after call post office to fix that, I've finished my work
                    Thanks you !
                    Cheer !

                    Comment


                    • #11
                      Grouding problem isn't it ?
                      -------------------------------------------------------
                      Yamaha R6 Rider
                      Tôi là Yuna_admirer.

                      Comment


                      • #12
                        hi there,

                        try upgrade IOS image from "c2500-i-mz_120-5_t.bin" (have some problem) to "c2500-is56i-l.120-27.bin" or the other.

                        good luck,
                        Huỳnh Chí Đại

                        Comment


                        • #13
                          Nếu modem quay số của bạn không trả lời incomming call, bạn có thể thử như sau :
                          - Reverse telnet vào modem
                          - Thực hiện quay số xem output có "RING" hay không, nếu không có thực hiện bước dưới đâyl
                          - Gõ lệnh at&s0=1 hoặc ats0=1
                          - Quay số lại

                          Hy vọng modem của bạn sẽ có tín hiệu trả lời.
                          xmenmsn => xmen today

                          Comment

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