Cisco 801 and a hub

Discussion in 'Cisco' started by Sean Rima, May 22, 2005.

  1. Sean Rima

    Sean Rima Guest

    I am getting a 801 which I plan on plugging into my wifi router. I plan
    on using it as the WAN device and connected to the WAN port.

    As I am dialup in a very expensive country, I don't want the ISDN ppp
    to go live automatically. Can I set it to manual, or can I set hours
    between which it can automatically dialup. I tried searching for an
    answer on the Cisco site but could not find an answer.

    Sean Rima, May 22, 2005
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  2. Hi Sean,

    when you config isdn dial on demand you have to configure which protocol
    can open the connection. The command is
    dialer-list dialer-group protocol protocol-name {permit | deny | list
    access-list-number | access-group}
    for example
    dialer-list 1 protocol ip permit opens the isdn connection as soon as an
    ip packet is arriving the router with routing table entry for isdn.
    But instead of defining "any" ip you can define an access list. In this
    access list you allow any ip packets, too. But you can use time based
    access lists. There you can define exactly when the isdn is allowed to
    be established.
    Description of tbacl:

    Please note that the access list, bound to the dialer-list does not
    limit packets at the isdn interface. The dialer-list feature defines
    only the packets which are interesting for the isdn connection, i. e.
    which can open the isdn line. As soon as the isdn connection is
    established all other packets are send over the isdn line, too. If you
    want to limit ip packets for sending over isdn you have to bound an
    access list to the isdn interface in the interface configuration mode.

    Other possibity:
    Just define an access list where you only allow packets to an specific
    ip destination. And you wrote a batch file with a neverending ping
    command. As soon as you want access over isdn you start the batch file.
    As long as the batch file sends ping packets, the isdn line will be
    open. If you stop the batch file, the isdn line is brought down after
    the dialer idle timeout.

    Hopefully my english were correct an understandable ...

    Regards from munich
    Stefan Emilius
    Stefan Emilius, May 22, 2005
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  3. Sean Rima

    Sean Rima Guest

    Stefan Emilius laid this down on his screen :
    Thanks, that is very helpfull and I think I will use a batch to ping a
    site or stop the autoloading of Trillian and use that as the connect
    script :)

    Sean Rima, May 22, 2005
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