Method for monitoring a bit rate of at least one virtual connect

Details Method for monitoring a bit rate of at least one virtual connect Method for monitoring a bit rate of at least one virtual connect

1991-10-29

1994-01-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, 370 601, H04J 116, H04J 314

Patent

active

052766764

ABSTRACT:
A method for monitoring at least one bit rate of at least one virtual connection, of a plurality of virtual connections, for which connection cells incoming on a transmission link are checked with respect to their temporal frequency. A temporal, average cell spacing of the incoming connection cells is provided according to an average bit rate of the at least one virtual connection and a bit rate on the transmission link. A central counter is clocked by a central counting clock and a counter value of the central counter is read at each of the incoming connection cells and the counter value that is connection-associated with the at least one virtual connection is stored. A counter value difference is formed from the stored counter value for the incoming connection cell and from the counter value that has been previously stored connection-associated with the at least one virtual connection for a previously arrived connection cell of the same virtual connection. A deviation is calculated of a respectively current cell spacing from the prescribed, average cell spacing for the respectively incoming connection cell using the counter value difference. A monitoring counter value is formed by summing the deviation of the cell spacing. A special handling of the virtual connection is implemented when the monitoring counter value transgress a first threshold value.

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"The Policing Function to Control User Access in ATM Networks--Definition and Implementation" by W. Kowalk, Conference Report of Iss IS 88, Boston 1988, Chapter 12.2, IEEE, pp. 240-245.

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