EP0841832A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Promiscuous network monitoring utilizing multicasting within a switch
Assignee: AT&T Inc
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Filing: 1997-10-29
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Granted: —
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Expires: 2017-10-29
Abstract
Abstract Multicasting within a switch is utilized to promiscuously monitor switched communication networks. The switch routes data packets from input ports to data output ports and routes copies of the data packets to a monitor output port. A monitor processor is connected to the switch to receive copies of all data packets received at the switch, and thereby monitor the communication network.
Inventors
- 👤 Kadangode K. Ramakrishnan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 13:41
CPC Classifications
H; H04; H04L; H04L63/00; H04L63/30; H04L49/00; H04L49/20; H04L49/201; H04L43/00; H04L49/203; H04L49/25; H04L49/30; H04L49/3081; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5625; H04L49/50
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
127 words
A switch, within a switched communication network, for enabling promiscuous monitoring, comprising: a plurality of input ports including a first input port, said plurality of input ports receiving a plurality of data packets including a first data packet and a second data packet; a plurality of data output ports including a first data output port and a second data output port; a first monitor output port; and an interconnection network connected to i) said plurality of input ports, ii) said plurality of output ports, and iii) said first monitor output port, said interconnection network routing the first data packet from the first input port to the first data output port, said interconnection network routing a copy of the first data packet to said first monitor output port.
Claim 2
Dependent Claim
26 words
The switch of claim 1, wherein a copy of each data packet of the plurality of data packets is routed to said first monitor output port.
Claim 3
Dependent Claim
25 words
The switch of claim 1, wherein a copy of a subset of the plurality of data packets is routed to said first monitor output port.
Claim 4
Dependent Claim
28 words
The switch of claim 1, wherein said interconnection network routes a copy of each data packet received at the first input port to said first monitor output port.
Claim 5
Dependent Claim
37 words
The switch of claim 1, wherein said interconnection network selects a subset of the plurality of data packets received at the first input port and routes a copy of the subset to said first monitor output port.
Claim 6
Dependent Claim
16 words
The switch of claim 5, wherein said interconnection network selects the subset on a dynamic basis.
Claim 7
Dependent Claim
17 words
The switch of claim 5, wherein said interconnection network selects the subset on a virtual circuit basis.
Claim 8
Dependent Claim
29 words
The switch of claim 1, wherein said interconnection network routes to said first monitor output port a copy of each data packet forwarded to the first data output port.
Claim 9
Dependent Claim
38 words
The switch of claim 1, wherein said interconnection network selects a subset of the plurality of data packets forwarded to the first data output port and routes a copy of the subset to said first monitor output port.
Claim 10
Dependent Claim
16 words
The switch of claim 9, wherein said interconnection network selects the subset on a dynamic basis.
Claim 11
Dependent Claim
17 words
The switch of claim 9, wherein said interconnection network selects the subset on a virtual circuit basis.
Claim 12
Dependent Claim
51 words
The switch of claim 1, further comprising: a second monitor output port connected to said interconnection network; said interconnection network routes the second data packet from the second input port to the second data output port and routes a copy of the second data packet to said second monitor output port.
Claim 13
Dependent Claim
60 words
The switch of claim 12, wherein said interconnection network selects a first subset of the plurality of data packets and routes a copy of the first subset to said first monitor output port, said interconnection network selects a second subset of the plurality of data packets and routes a copy of the second subset to said second monitor output port.
Claim 14
Dependent Claim
32 words
The switch of claim 13, wherein said interconnection network balances the load between data packets routed to said first monitor output port and data packets routed to said second monitor output port.
Claim 15
Dependent Claim
20 words
The switch of claim 13, wherein said interconnection network selects the first subset or second subset on a dynamic basis.
Claim 16
Dependent Claim
21 words
The switch of claim 13, wherein said interconnection network selects the first subset or second subset on a virtual circuit basis.
References Cited (Backward Citations)
No citation records indexed.
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