US5671224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for interconnecting local area networks or network segments and a local area network bridge
Assignee: Nokia Oyj
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Filing: 1993-10-01
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Granted: 1997-09-23
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Expires: 2013-10-01
Abstract
Abstract A method for interconnecting local area networks or network segments by means of a bridge. In the method, a local area network frame is received at the bridge and forwarded across the bridge if its destination address refers to a network or network segment on the other side of the bridge. In order that a bridge simple in structure can be utilized in cases where priority is to be assigned to terminal traffic over datafile transfer traffic, the length of the frame to be forwarded is determined for classification into a respective one of at least two categories, by length, and the obtained length classifications are utilized in the transmission of the frames for assigning priority to at least some of the shorter frames over the longer frames.
Inventors
- 👤 Seppo Pyhalammi
- 👤 Olli-Pekka Lintula
- 👤 Antti Kokkinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:56
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/462; H04L12/4625
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
A method for interconnecting local area networks or network segments by a bridge, comprising: receiving local area network frames in the bridge and forwarding each across the bridge only if its destination address refers to a network or network segment on the other side of the bridge, classifying each frame to be forwarded as to its length, into a respective one of at least two different, and using the respective obtained length classifications in the transmission of the frames, for assigning priority to at least some of the frames which are shorter, over at least some of the remaining frames which are longer.
Claim 2
Independent Claim
103 words
A method for interconnecting local area networks or network segments by a bridge, comprising: receiving local area network frames in the bridge and forwarding each across the bridge only if its destination address refers to a network or network segment on the other side of the bridge, classifying each frame to be forwarded as to its length, into a respective one of at least two different, and using the respective obtained length classifications in the transmission of the frames, for assigning priority to at least some of the frames which are shorter, over at least some of the remaining frames which are longer.
Claim 3
Dependent Claim
15 words
The method according to claim 1, wherein: the frames are classified into two length categories.
Claim 4
Dependent Claim
50 words
The method according to claim 2, wherein: a frame classified as short is assigned priority over the frames if there does not simultaneously occur a frame which has no priority and which is transmitted from a same transmitting party to a same receiving party as said frame classified as short.
Claim 5
Dependent Claim
50 words
The method according to claim 1, wherein: a frame classified as short is assigned priority over other frames if there does not simultaneously occur a frame which has no priority and which is transmitted from a same transmitting party to a same receiving party as said frame classified as short.
Claim 6
Dependent Claim
141 words
A local area network bridge for the interconnection of local area networks or network segments, comprising: two network interfaces and means for analyzing the physical address contained in each frame to be transmitted in a local area network, including: means for classifying frames to be forwarded across the bridge on the basis of their length into at least two length categories each having a respective priority status; means for comparing the source and destination addresses of each respective frame to be passed across the bridge with the corresponding addresses of frames already placed in a transmission queue and having a lower priority status than said respective frame; and at least two buffers dividing the frames to be passed across the bridge on the basis of the length classification and address checking, into at least two transmission queues having different priority statuses.
Claim 7
Dependent Claim
141 words
A local area network bridge for the interconnection of local area networks or network segments, comprising: two network interfaces and means for analyzing the physical address contained in each frame to be transmitted in a local area network, including: means for classifying frames to be forwarded across the bridge on the basis of their length into at least two length categories each having a respective priority status; means for comparing the source and destination addresses of each respective frame to be passed across the bridge with the corresponding addresses of frames already placed in a transmission queue and having a lower priority status than said respective frame; and at least two buffers dividing the frames to be passed across the bridge on the basis of the length classification and address checking, into at least two transmission queues having different priority statuses.
Claim 8
Independent Claim
196 words
A method for providing routing network services, comprising: interconnecting a plurality of customer-specific local area networks and a public network via a respective plurality of transmission lines, including connecting each local area network to the respective said transmission line by a respective bridge, and providing respective customer-specific routers for said transmission lines, each on the public network side of the respective bridge; and for each said local area network, receiving local area network frames in the respective bridge and forwarding each across the respective bridge only if its destination address refers to the respective local area network; classifying each frame to be forwarded, as to its length, into a respective one of two different length categories; and using the respective obtained length classifications in the transmission of the frames, for assigning priority to at least some of the frames which are shorter over at least some of the remaining frames which are longer, a frame classified as short being assigned priority over other frames if there does not simultaneously occur a frame which has no priority and which is transmitted from a same transmitting party to a same receiving party as said frame classified as short.
Claim 9
Independent Claim
196 words
A method for providing routing network services, comprising: interconnecting a plurality of customer-specific local area networks and a public network via a respective plurality of transmission lines, including connecting each local area network to the respective said transmission line by a respective bridge, and providing respective customer-specific routers for said transmission lines, each on the public network side of the respective bridge; and for each said local area network, receiving local area network frames in the respective bridge and forwarding each across the respective bridge only if its destination address refers to the respective local area network; classifying each frame to be forwarded, as to its length, into a respective one of two different length categories; and using the respective obtained length classifications in the transmission of the frames, for assigning priority to at least some of the frames which are shorter over at least some of the remaining frames which are longer, a frame classified as short being assigned priority over other frames if there does not simultaneously occur a frame which has no priority and which is transmitted from a same transmitting party to a same receiving party as said frame classified as short.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-22 | 2001-03-24 | 2001-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-22 | 2005-03-24 | 2005-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-22 | 2009-03-24 | 2009-09-23 | $7700.00 | Window Closed / Lapsed |