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Church Of The
Swimming Elephant

9.2 Circuit Manager Properties Connected: An Internet Encyclopedia
9.2 Circuit Manager Properties

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Up: RFC 1772
Up: 9. Operations over Switched Virtual Circuits
Prev: 9.1 Establishing a BGP Connection
Next: 9.3 TCP Properties

9.2 Circuit Manager Properties

9.2 Circuit Manager Properties

The circuit manager must have sufficient functionality to be able to compensate for the lack of periodic KEEPALIVE messages:

  • It must be able to determine link layer unreachability in a predictable finite period of a failure occurring.

  • On determining unreachability it should:

    • start a configurable dead timer (comparable to a typical Hold timer value).

    • attempt to re-establish the Link Layer connection.

  • If the dead timer expires it should:

    • send an internal circuit DEAD indication to TCP.

  • If the connection is re-established it should:

    • cancel the dead timer.

    • send an internal circuit UP indication to TCP.

Next: 9.3 TCP Properties

Connected: An Internet Encyclopedia
9.2 Circuit Manager Properties


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