WO1998045984B1 - Architecture to support a single system image across multiple network access servers - Google Patents
Architecture to support a single system image across multiple network access serversInfo
- Publication number
- WO1998045984B1 WO1998045984B1 PCT/US1998/002939 US9802939W WO9845984B1 WO 1998045984 B1 WO1998045984 B1 WO 1998045984B1 US 9802939 W US9802939 W US 9802939W WO 9845984 B1 WO9845984 B1 WO 9845984B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication channel
- line
- communications
- remote host
- telephone lines
- Prior art date
Links
- 230000005641 tunneling Effects 0.000 claims abstract 6
- CKRLIWFOVCLXTP-UHFFFAOYSA-N 4-phenyl-1-propyl-3,6-dihydro-2H-pyridine Chemical compound C1N(CCC)CCC(C=2C=CC=CC=2)=C1 CKRLIWFOVCLXTP-UHFFFAOYSA-N 0.000 claims 2
Abstract
The present invention provides a modular architecture for connecting a plurality of telephone lines (140, 142, 144) to a computer network. The invention binds a plurality of network access servers (100, 110, 120) together so that when they form a single system image to the clients dialing into the plurality of network access servers (100, 110, 120). The invention operates by providing a tunneling mechanism for communication between the network access servers (100, 110, 120). The tunneling mechanism facilitates packet re-forwarding so that a call dialed into a physical port (742) in a server (702) can be re-forwarded through a logical port (710) in another server (700). This allows a call to be routed through a physical port in a network server even if no logical port is available in the network access server (700). Packet re-forwarding also allows multilink connections through physical ports (1150, 1152) in multiple network access servers (1110, 1102) to be routed through a single logical port (1130) in a network access server (1110).
Claims
1. An apparatus for routing communications between a plurality of telephone lines and a remote host, comprising: a communication channel coupled to the remote host; a plurality of line servers, line servers in the plurality of line servers coupled to the communication channel and telephone lines in the plurality of telephone lines; and a plurality of packet processors, each packer processor coupled to the communication channel and including a plurality of ports for facilitating communications between line servers in the plurality of line servers and the remote host, wherein the ports of each packet processor include a logical port for communicating with logical connections to the remote host, and a physical port for communicating with other packet processors.
2. The apparatus of claim 1, wherein each packet processor communicates with another packet processor using a tunneling protocol.
3. The apparatus of claim 2, wherein the tunneling protocol includes the PPTP protocol.
4. The apparatus of claim 1 , wherein the communication channel includes a separate communication channel for communications between the packet processors.
5. The apparatus of claim 1, wherein the communication channel includes a separate communication channel for communications between the packet processors and line servers.
6. The apparatus of claim 1 , wherein the communication channel includes a plurality of separate communication channels for communications between the packet processors and the respective line servers.
7. The apparatus of claim 1, wherein the communication channel includes a separate communication channel for communications between the packet processors and the remote host.
8. The apparatus of claim 1, wherein the communication channel is a packet-switched network.
9. The apparatus of claim 1, wherein the communication channel is the Internet.
10. An apparatus for routing communications between a plurality of telephone lines and a remote host, comprising: a communication channel coupled to the remote host; a plurality of line servers, line servers in the plurality of line servers coupled to the communication channel, and to telephone lines in the plurality of telephone lines; and a plurality of packet processors coupled to the communication channel and including a plurality of ports for facilitating communications between line servers in the plurality of line servers and the remote host, the ports for each packet processor including, a first physical port for communications with one of the line servers, and a second physical port for communications with another packet processor, and a plurality of logical ports for facilitating communications with logical connections to the remote host,
-36-
wherein a communication between a telephone line in the plurality of telephone lines coupled to a first line server and the remote host flows through the first physical port of a first packet processor and through the second physical port and logical port of a second packet processor using a tunneling protocol.
11. The apparatus of claim 10, wherein the tunneling protocol includes the PPTP protocol.
12. The apparatus of claim 10, wherein the communication channel includes a separate communication channel for communications between the plurality of packet processors.
13. The apparatus of claim 10, wherein the communication channel includes a separate communication channel for communications between the packet processors and line servers.
14. The apparatus of claim 10, wherein the communication channel includes a plurality of separate communication channels for communications between the packet processors and line servers.
15. The apparatus of claim 10, wherein the communication channel includes a separate communication channel for communications between the packet processors and the remote host.
16. The apparatus of claim 10, wherein the communication channel is a packet-switched network.
17. The apparatus of claim 10, wherein the communication channel is the Internet.
-37-
18. The apparatus of claim 1 , wherein a communication from one ofthe line servers to the remote host sequentially passes through the physical port ofthe first packet processor, the physical port ofthe second packet processor, and the logical port ofthe second packet processor.
19. The apparatus of claim 1 , wherein the packet processor stand alone from the line servers.
20. The apparatus of claim 1, further comprising: a first telephone line coupled to the first line server, said first line server coupled to the first packet processor; a second telephone line coupled to a second line server, said second line server coupled to the second packet processor; and wherein each telephone line communicates with the remote host through the physical and logical port of the first packet processor.
21. The apparatus of claim 10, wherein the communication from one ofthe line servers to the remote host passes through the physical port of a third packet processor.
22. An apparatus for routing communications between a plurality of telephone lines and a remote host, comprising; a communication channel coupled to the remote host; a plurality of line servers, line servers in the plurality of line servers, coupled to the communication channel and telephone lines in the plurality of telephone lines; a plurality of modules, modules in the plurality of modules coupled to the communication channel and including resources for facilitating communications between line servers in the plurality of line servers and the remote host,
- 38-
wherein the resources include, resources for communicating with other modules in the plurality of modules to facilitate communications between telephone lines in the plurality of telephone lines coupled to line servers in the plurality of line servers and the remote host, a plurality of physical ports for facilitating communications with associated telephone lines in the plurality of telephone lines, a plurality of logical ports for facilitating communications with logical connections to the remote host; and wherein a communication between telephone lines in the plurality of telephone lines and the remote host flows from a first telephone line in the plurality of telephone lines through a first physical port in the plurality of physical ports within a first module in the plurality of modules, and from a second telephone line in the plurality of telephone lines through a second physical port in the plurality of physical ports within a second module in the plurality of modules, communications from the first telephone line and the second telephone line flowing through a logical port in the plurality of logical ports within the second module in the plurality of modules.
-39-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU64354/98A AU6435498A (en) | 1997-04-08 | 1998-02-17 | Architecture to support a single system image across multiple network access servers |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/835,536 US6026085A (en) | 1997-04-08 | 1997-04-08 | Architecture to support a single system image across multiple network access servers |
| US08/835,536 | 1997-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998045984A1 WO1998045984A1 (en) | 1998-10-15 |
| WO1998045984B1 true WO1998045984B1 (en) | 1998-12-03 |
Family
ID=25269762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1998/002939 WO1998045984A1 (en) | 1997-04-08 | 1998-02-17 | Architecture to support a single system image across multiple network access servers |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US6026085A (en) |
| AU (1) | AU6435498A (en) |
| WO (1) | WO1998045984A1 (en) |
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| US7037426B2 (en) * | 2000-05-04 | 2006-05-02 | Zenon Environmental Inc. | Immersed membrane apparatus |
| US6147987A (en) * | 1997-04-08 | 2000-11-14 | 3Com Corporation | Supporting load sharing across multiple network access servers |
| US6801509B1 (en) * | 1998-05-08 | 2004-10-05 | Lucent Technologies Inc. | Mobile point-to-point protocol |
| US6212560B1 (en) * | 1998-05-08 | 2001-04-03 | Compaq Computer Corporation | Dynamic proxy server |
| US6496491B2 (en) * | 1998-05-08 | 2002-12-17 | Lucent Technologies Inc. | Mobile point-to-point protocol |
| FI105749B (en) | 1998-06-12 | 2000-09-29 | Ericsson Telefon Ab L M | Data Communications Network |
| FI105748B (en) | 1998-06-12 | 2000-09-29 | Ericsson Telefon Ab L M | Communication method and device |
| US7505455B1 (en) * | 1999-03-19 | 2009-03-17 | F5 Networks, Inc. | Optimizations for tunneling between a bus and a network |
| US7349391B2 (en) * | 1999-03-19 | 2008-03-25 | F5 Networks, Inc. | Tunneling between a bus and a network |
| US7289964B1 (en) | 1999-08-31 | 2007-10-30 | Accenture Llp | System and method for transaction services patterns in a netcentric environment |
| GB9925101D0 (en) * | 1999-10-22 | 1999-12-22 | Virtual Access Ireland Limited | Multi channel communication control system and method |
| DE10046320A1 (en) * | 2000-09-19 | 2002-04-04 | Siemens Ag | Distributed communication system |
| US20020144024A1 (en) * | 2001-03-30 | 2002-10-03 | Kumpf David A. | Method and system for assigning peripheral devices to logical ports of a network peripheral server |
| US8468337B2 (en) * | 2004-03-02 | 2013-06-18 | International Business Machines Corporation | Secure data transfer over a network |
| US7564976B2 (en) * | 2004-03-02 | 2009-07-21 | International Business Machines Corporation | System and method for performing security operations on network data |
| EP1850551B8 (en) * | 2006-04-28 | 2016-11-23 | Unify GmbH & Co. KG | Method and apparatuses for establishing a communication in a packet oriented network |
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-
1997
- 1997-04-08 US US08/835,536 patent/US6026085A/en not_active Expired - Lifetime
-
1998
- 1998-02-17 WO PCT/US1998/002939 patent/WO1998045984A1/en active Application Filing
- 1998-02-17 AU AU64354/98A patent/AU6435498A/en not_active Abandoned
-
1999
- 1999-06-08 US US09/328,191 patent/US6256305B1/en not_active Expired - Fee Related
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