Multiple segment network device configured for a stacked arrangement

• US 6,459,700 B1
• Filed: 05/14/1998
• Issued: 10/01/2002
• Est. Priority Date: 06/23/1997
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Compaq Computer Corporation (HP Inc.)
• Inventors: Hoang, Thao M.
• Primary Examiner(s): Olms, Douglas
• Assistant Examiner(s): Sam, Phirin
• Application Number:
  US09/078,715
• Time in Patent Office: 1,601 Days
• Field of Search: 370/401, 370/293, 370/315, 370/362, 370/391, 370/400, 370/402, 370/404, 370/405, 370/420, 370/437, 370/462, 370/465, 370/501, 370/502, 370/254, 370/255, 370/257, 370/352, 370/353, 370/354, 370/356, 370/492, 370/357, 370/360
• US Class Current: 370/401
• CPC Class Codes: H04L 12/46 Interconnection of networks
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/0686 Additional information in the notification, e.g. enhancement of specific meta-data
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 49/351 for local area network [LAN], e.g. Ethernet switches
• CPC Class Codes: H04L 49/40 Constructional details, e.g. power supply, mechanical construction or backplane

Abstract

A multiple segment network device configured for a stacked arrangement via a common backplane. The device is a repeater that includes a first repeater segment, a second repeater segment and a switch device disposed between the first and second repeater segments that enables communication therebetween within a single logical network domain. The device further includes a backplane connector coupled to the second repeater segment to enable extension of the second repeater segment to a common backplane with external devices while maintaining a single repeater domain. The first repeater segment operates at a first transmission rate and the second repeater segment operates at a second transmission rate. The switch device may be a learning bridge that filters information between the first and second repeater segments. The common backplane enables two or more repeaters to be coupled within the same logical network domain or LAN. The backplane couples each second segment of each repeater into the same repeater or collision domain, and allows nodes coupled through any of the first repeater segments to communicate via the backplane.

Claims

1. A multiple segment network device configured for a stacked arrangement via a common backplane, comprising:

a first repeater segment;

a second repeater segment;

a switch device disposed between said first and second repeater segments that enables communication therebetween within a single logical network domain the switch device comprising a learning bridge; and

a backplane connector coupled to said second repeater segment to enable extension of said second repeater segment to a common backplane with external devices while maintaining a single repeater domain.

2. The multiple segment network device of claim 1, wherein said first and second repeater segments operate at first and second transmission rates, respectively.

3. The multiple segment network device of claim 1, wherein said first repeater segment operates at approximately ten megabits per second.

4. The multiple segment network device of claim 1, wherein said second repeater segment operates at approximately one hundred megabits per second.

5. The multiple segment network device of claim 1, wherein said switch device learns a source address of each packet provided on said first repeater segment.

6. The multiple segment network device of claim 5, wherein said switch device forwards a packet with an unknown destination address provided on said first repeater segment to said second repeater segment.

7. The multiple segment network device of claim 5, wherein said switch device forwards a packet with a known destination address provided on said second repeater segment to said first repeater segment.

8. The multiple segment network device of claim 1, further comprising:

said first repeater segment including a first repeater device operating at a first transmission rate;

said second repeater segment including a second repeater device operating at a second transmission rate;

a plurality of port connectors;

a plurality of physical devices, each coupled to a corresponding one of said plurality port connectors that detects a network device coupled to said corresponding port connector and that negotiates transmission rate between said first and second transmission rates; and

adaptive repeater logic coupled to each of said plurality of physical devices that couples each physical device detecting a coupled network device to one of said first and second repeater devices based on negotiated transmission rate.

9. A network system, comprising:

a first repeater including a first segment, a second segment and a switch device coupled between said first and second segments of said first repeater;

a second repeater including a first segment, a second segment and a switch device coupled between said first and second segments of said second repeater, and wherein each of the switch devices of the first and second repeaters comprise learning devices; and

a backplane bus coupled between said second segments of each of said first and second repeaters to form a single collision domain.

10. The network system of claim 9, further comprising:

said first repeater comprising a managing repeater and said second repeater comprising a manageable repeater forming a managed stack.

11. The network system of claim 10, further comprising:

a third multiple segment repeater including a first segment, a second segment and a switch device coupled between said first and second segments of said third repeater;

a backplane bus coupled between said second segments of each of said first, second and third repeaters forming a single collision domain; and

said first repeater comprising a managing repeater and said second and third repeaters each comprising manageable repeaters to form a managed stack.

12. The network system of claim 10, further comprising:

said managing repeater having a physical address applicable to said first and second segments of both of said managing repeater and said manageable repeater to form one logical network domain.

13. The network system claim 9, further comprising:

said switch device of said first repeater learns a source address of each packet provided on said first segment of said first repeater; and

said switch device of said second repeater learns a source address of each packet provided on said first segment of said second repeater.

14. The network system of claim 13, wherein:

said switch device of said first repeater forwards a packet with an unknown destination address provided on said first segment of said first repeater to said second segment of said first repeater; and

wherein said switch device of said second repeater forwards a packet with an unknown destination address provided on said first segment of said second repeater to said second segment of said second repeater.

15. The network system of claim 13, wherein:

said switch device of said first repeater forwards a packet with a known destination address provided on said second segment of said first repeater to said first segment of said first repeater; and

said switch device of said second repeater forwards a packet with a known destination address provided on said second segment of said second repeater to said first segment of said second repeater.

16. The network system of claim 9, further comprising:

said first segments of each of said first and second repeaters operating at a transmission rate of approximately ten megabits per second; and

said second segments of each of said first and second repeaters operating at a transmission rate of approximately one hundred megabits per second.

17. The network system of claim 9, further comprising:

said first and second repeaters each comprising manageable repeaters that form an unmanaged stack; and

said first repeater including an internal arbiter that arbitrates access of said backplane bus between said first and second repeaters.