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  1. Junior Member Registered Member
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    Feb 2016
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    #1

    Default Async 16A card in 2811 Router

    Hello, I am new to the site and recently started studying for my CCNA. I have my own at home lab which has 3 2811 routers and 3 switches and I have been following Chris Bryant on Udemy. I got tired of having to switch out console cables because you are constantly changing things in a lab so I decided to get an Async card and an octal cable. The problem is I don't know anything about it and Chris Bryant hasn't gone over this stuff yet for the CCNA so I had to dig around the web to try and get everything configured.

    Last night I installed the card and had green lights on the front of the Async card showing me that it was connected properly and when I ran the show line command I saw there were 16 TTY lines available. I then tried to configure the reverse telnet but I failed so after hours of reading from different sites I decided to just turn off my lab and try again the next day with a fresh head. So I turned my lab on today but now the router isn't even recognizing the card. The lights are off and when I run the show line command there are no TTY lines available. I am wondering what happened after coming off the cold start that changed the settings and how to I get the router to recognize it again so I can attempt to configure reverse telnet? I tried deleting NVRAM and reloading the router with no results. The only thing I haven't tried is removing the card and reseating it but I don't think that's the problem. My instinct is the router disabled that interface and I need to enable it but have no idea how. Just a guess. I am hoping someone here can help me out getting the Async stuff figured out so I can go back to studying with Chris Bryant and be able to switch between devices like he does in his videos.
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  3. Senior Member
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    #2
    does the ios notice the card at startup. above where it tells you about the cf size, and how many serial wics are installed, and the virtual vpn.
    and does it show up in the running config after the line console settings.

    then for getting the ttys working. you will need to assign a loopback address. something like this
    interface Loopback0
    ip address 172.21.1.1 255.255.255.255

    then assign some ip hosts:
    ip host R1 2033 172.21.1.1
    ip host R2 2034 172.21.1.1
    ip host R3 2035 172.21.1.1
    ip host R4 2036 172.21.1.1
    a 32a card starts at 2033, a 2509 (8as ttys) starts at 2001, not sure where a 16a starts at.

    then set the tty config
    line 33 64
    exec-timeout 15 0
    logging synchronous
    no exec
    transport input all
    line aux 0

    then telnet to the 2811 ethernet interface using the 20xx host.
    telnet 192.168.1.1 with port number 2033

    make sure the card is installed all the way. and the octal cable is also.
    Last edited by clarson; 02-22-2016 at 07:26 AM.
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  4. Junior Member Registered Member
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    #3
    First off thank you for the response. The card is seated properly and worked fine when I first installed it and the show line command showed the 16 TTY lines available. I feel as though I haven't wiped the entire router's settings and something I did on the first day of installing the card has since "blocked" the Async card connection. It's no longer enabled but the startup shows it's there.

    Installed image archive
    Cisco 2811 (revision 1.0) with 249856K/12288K bytes of memory.
    Processor board ID FTX1215A07R
    2 FastEthernet interfaces
    1 Serial interface
    1 Serial(sync/async) interface
    2 Virtual Private Network (VPN) Modules
    DRAM configuration is 64 bits wide with parity enabled.
    239K bytes of non-volatile configuration memory.
    500472K bytes of ATA CompactFlash (Read/Write)

    But show line command is:

    Tty Line Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
    * 0 0 CTY - - - - - 0 0 0/0 -
    1 1 AUX 9600/9600 - - - - - 0 0 0/0 -
    514 514 VTY - - - - - 0 0 0/0 -
    515 515 VTY - - - - - 0 0 0/0 -
    516 516 VTY - - - - - 0 0 0/0 -
    517 517 VTY - - - - - 0 0 0/0 -
    518 518 VTY - - - - - 0 0 0/0 -

    So the TTY lines are not viewable yet the router knows the async card is there so with my newbie knowledge I am thinking physically everything is fine but logically the settings are messed up and the router cannot use the Async interface as intended.

    So my thought on how to fix it is to completely wipe the settings and go back to the default settings. I thought that's what I did when I cleared the NVRAM but my old settings are still popping up at startup. So how to you completely clear all settings on a 2811 router? After I do that I "think" the TTY lines will show up again and then I can try setting the loopback configurations as you recommended.
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  5. Guest
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    #4
    write erase will erase the startup config


    @clarson the numbering is based on slot location

    On the G1 ISRs
    0/0/x reserved 16 numbers (2002 - 2017)
    0/1/x reserved 16 numbers (2018 - 2033)
    0/2/x reserved 16 numbers (2034 - 2049)
    0/3/x reserved 16 numbers (2050 - 2065)
    1/x reserved 64 numbers (2066 - 2129) (NM-32A will be 2066-2097, NM-16A will be 2066-2081)
    2/x reserved 64 numbers (2130 - 2193)
    3/x reserved 64 numbers (2194 - 2257)
    4/x reserved 64 numbers (2258 - 2321)

    2600 uses 33-64 (NM-32A) and 33-48 (NM-16A)
    Last edited by Priston; 02-22-2016 at 06:55 PM.
    A.A.S. in Networking Technologies
    A+, Network+, CCNA
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  6. Junior Member Registered Member
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    #5
    I got everything erased today by using the erase nvram: command and followed it up with a reload.

    Since I am just starting my CCNA training I am really going beyond my scope for the time being but I wanted to be able to switch between console ports faster than physically doing it every time so I appreciate the feedback.

    I don't think the card is physically showing up now so I am going to power down the lab and reseat the card. I hank the card is in the AIM slot in the 2811 router and if that's true than this information below from IOS is telling me the router has no clue what I have in the slot.

    AIM Module in slot: 0
    Hardware Revision : 1.0
    Top Assy. Part Number : 800-27059-01
    Board Revision : A0
    Deviation Number : 9-4123
    Fab Version : 02
    PCB Serial Number : FOC12083Q5A
    RMA Test History : 00
    RMA Number : 0-0-0-0
    RMA History : 00
    Product (FRU) Number : AIM-VPN/SSL-2
    Version Identifier : V01
    EEPROM format version 4
    EEPROM contents (hex):
    0x00: 04 FF 40 04 F4 41 01 00 C0 46 03 20 00 69 B3 01
    0x10: 42 41 30 80 00 09 10 1B 02 02 C1 8B 46 4F 43 31
    0x20: 32 30 38 33 51 35 41 03 00 81 00 00 00 00 04 00
    0x30: CB 8D 41 49 4D 2D 56 50 4E 2F 53 53 4C 2D 32 89
    0x40: 56 30 31 00 D9 02 40 C1 FF FF FF FF FF FF FF FF
    0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF


    Router#show line
    Tty Line Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
    * 0 0 CTY - - - - - 0 0 0/0 -
    1 1 AUX 9600/9600 - - - - - 0 0 0/0 -
    514 514 VTY - - - - - 0 0 0/0 -
    515 515 VTY - - - - - 0 0 0/0 -
    516 516 VTY - - - - - 0 0 0/0 -
    517 517 VTY - - - - - 0 0 0/0 -
    518 518 VTY - - - - - 0 0 0/0 -

    Line(s) not in async mode -or- with no hardware support:
    2-513

    Still no TTY lines showing up so I am going to try reseating it and powering it back up. If that doesn't work I still have 2 other 2811 routers in my lab so I will try putting the Async card in one of those and see if that works. Maybe the AIM slot is bad on the router or maybe the Async card itself is bad. I am just newbie trying to setup the card so I can go back to talking about vlans with Chris Bryant haha... this is beyond what I need to know right now but hey at least I am learning.
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  7. Junior Member Registered Member
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    #6
    Ok, I reseated the card and did not plug the octal cable back in and success!! I have TTY lines!!!

    Router#show line
    Tty Line Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int
    * 0 0 CTY - - - - - 0 0 0/0 -
    1 1 AUX 9600/9600 - - - - - 0 0 0/0 -
    1/0 66 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/1 67 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/2 68 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/3 69 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/4 70 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/5 71 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/6 72 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/7 73 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/8 74 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/9 75 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/10 76 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/11 77 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/12 78 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/13 79 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/14 80 TTY 9600/9600 - - - - - 0 0 0/0 -
    1/15 81 TTY 9600/9600 - - - - - 0 0 0/0 -
    514 514 VTY - - - - - 0 0 0/0 -
    515 515 VTY - - - - - 0 0 0/0 -
    516 516 VTY - - - - - 0 0 0/0 -
    517 517 VTY - - - - - 0 0 0/0 -
    518 518 VTY - - - - - 0 0 0/0 -

    Now I am hoping I can just scroll up on this thread and use your configs to set everything up

    Thanks!!!
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  8. Senior Member
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    #7
    the aim slots can only be accessed by taking the cover off. you are installing it in a (and being there is only one on a 2811, it is the) network module slot.

    your 2811 has a vpn/ssl card installed. which is why your getting this: "2 Virtual Private Network (VPN) Modules" at startup. the router has 1 by default. The second one is because of the aim card.

    at the "#" prompt do a show inventory
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  9. Senior Member
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    #8
    that is progress. your ttys start at 66. so instead of:
    ip host R1 2033 172.21.1.1
    your need to do
    ip host R1 2066 172.21.1.1

    and increment up for your other ttys
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  10. Junior Member Registered Member
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    Feb 2016
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    #9
    Everything works great and thank you both so much for the information. It was definitely beyond what I need to learn right now, but for some reason Chris Bryant was using it in his videos but didn't show us students how to do it so I was jealous that he could reverse telnet and I couldn't haha... I'm still kinda wondering how the night before the card worked and then after sitting overnight all the sudden it didn't work and had to be reseated but I guess I'll let that thought go as I have other things to learn that are probably more important right now.

    Also, these forums are pretty sweet and I hope I can contribute to them more once I get more knowledge under my belt. Back to the books and thanks again!
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