The method and apparatus of probing survival time of address translation entries on NAT equipment

The method and apparatus of probing survival time of address translation entries on NAT equipment

  • CN 101,800,683 B
  • Filed: 04/26/2010
  • Issued: 10/21/2015
  • Est. Priority Date: 04/26/2010
  • Status: Active Grant
First Claim
Patent Images

1. the method for address translation entry time-to-live on detection network address transition NAT device, is characterized in that, comprising:

  • Step 1, access device send the cycle information preset to client, make client send probe message according to described cycle information to described access device;

    Whether step 2, described access device receive and detect the data-message of described client transmission, identical with the IP tunnel of the adjacent data message received, and if so, perform step 3, otherwise, perform step 4;

    The time of the data-message that step 3, described access device send according to the described client received, with the time of previous interactive data message, writing time interval, and when the data message type that described client sends is probe message, heighten described cycle information, judge whether the cycle information after heightening reaches preset maximum value, if so, performs step 4;

    Otherwise, using the cycle information after described heightening as the cycle information preset, return step 1;

    Wherein, described interaction data message is data-message mutual between described access device and described client;

    Step 4, described access device with the maximum in the described time interval for the address translation entry time-to-live on NAT device.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×