Multiplex communications – Wide area network – Packet switching
Patent
1994-11-07
1996-04-23
Kizou, Hassan
Multiplex communications
Wide area network
Packet switching
39520002, H04L 1256
Patent
active
055110762
ABSTRACT:
A host system and an ATM network adapter using a chaser packet are presented. The adapter receives cells over a virtual connection on the network and generates, in response to the host system, a chaser packet which allows the host to detect that all data has been transferred form the adapter buffers to host memory. When all data has been transferred, the host may release the virtual connection without data loss. The host and adapter may also transmit data. In data transmission, the chaser packet is used to determine that all data has been transmitted out onto the network before the sending host releases the virtual connection. The chaser packet is also used for resynchronization of credits where the ATM network uses credit-based flow control. The adapter uses the chaser packet to drain the local queue so that the link between the adapter and a source system may be resynchronized.
REFERENCES:
patent: 5050166 (1991-09-01), Cantoni et al.
patent: 5067123 (1991-11-01), Hyodo et al.
patent: 5193149 (1993-03-01), Awiszio et al.
patent: 5237569 (1993-08-01), Sekihata et al.
patent: 5420858 (1995-05-01), Marshall et al.
Ben-Michael Simoni
Ben-Nun Michael
Ramakrishnan Kadangode K.
Roman Peter J.
Dagg David A.
Digital Equipment Corporation
Kizou Hassan
Kuta Christine M.
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