Telefonaktiebolaget Lm Ericsson (Publ)

Mats A Persson

Robert Bengt Skog

Ala Nazari

Arne L Lovdin

Ake Gerdfeldter

ÅKe Gerdfeldter

A method is implemented by a transparent proxy to support graceful switchover in a network, where the transparent proxy proxies one or more Transmission Control Protocol (TCP) connections involving a destination Internet Protocol (IP) address. The method includes starting a switchover timer for the destination IP address in response to receiving an instruction from an Application Flow Controller (AFC) to start the switchover timer for the destination IP address and transmitting an indication to the AFC that all of the one or more TCP connections involving the destination IP address that are proxied by the transparent proxy have ended or the switchover timer for the destination IP address has expired in response to a determination that all of the one or more TCP connections involving the destination IP address that are proxied by the transparent proxy have ended or the switchover timer for the destination IP address has expired.

Service aware switch-over of TCP-flows

PCT No. PCT/SE78/00033 Sec. 371 Date May 1, 1979 Sec. 102(e) Date May 1, 1979 PCT Filed Aug. 16, 1978 PCT Pub. No. WO 79/00138 PCT Pub. Date Mar. 22, 1979 An integrated switching and transmission network includes a digital switching system for transferring communication information without congestion. The switching system consists of one-way switch modules (SM) which are connected through two-way time division multiplex transmission links (La-Lb) to link modules (LM) each including a control unit (CU) for establishing communication paths within an associated line group (LG) as well as for controlling the switching system in cooperation with the control units of other line groups. Each of the switch modules (SM x/y) is allotted to two of the two-way links and comprises a time stage (TS) and a signalling logic circuit (SL). The input of each module is connected exclusively to one way (La,x) of one (La,x-Lb,x) of the two-way links, whereas the output of each module is connected exclusively to the other way (Lb,y) of the other two-way link (Lay-Lby). For the reliable control of the network, transmitting control units generate signals. Each signal addresses one of the signalling logic circuits, which converts the signal to an operation signal by which the associated time stage is operated or to a signal intended for the receiving control unit. Furthermore, control messages are used and transferred between the control units through the time stages. The time stages carry out the required time interchanges for the transfer of said control messages and communication information between the line groups.

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Varby, Sweden

Mats A Persson