Application No. 11/123,801
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`Amendment dated July 28, 2008
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`Reply to Office Action of May 14, 2008
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`DocketNo.: 06727/0202901-US0
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`AMENDMENTS TO THE CLAIMS
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`1. (Currently amended) A method for processing data packets in a communication network,
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`compnsmg:
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`establishing a path for a flow of the data packets through the communication network;
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`at a node along the path, which is connected to a subsequent node along the path by a Link
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`Aggregation (LAG) group comprising having a plurality of aggregated physical ports, selecting a
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`port from among the plurality LAG group to serve as part of the path;
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`choosing a label responsively to the selected port;
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`attaching the label to the data packets in the flow at a point on the path upstream from the
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`node;and
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`upon receiving the data packets at the node, switching the data packets to the subsequent
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`node through the selected port responsively to the label.
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`thea tunnel through the path comprises to claim 1, wherein 2. (Original) The method according
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`communication network.
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`3. (Original) The method according to claim 2, wherein the tunnel comprises a MPLS (Multi­
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`Protocol Label Switching) tunnel, and wherein establishing the path comprises receiving and
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`responding to a RSVP-TE (Resource Reservation Protocol) PATH message.
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`4. (Currently amended)
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`The method according to claim 1, wherein the plurality of aggregated
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`ports compnses a LAG (Link A.ggregation) group, according conforms to an IEEE 802.3ad
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`specification.
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`5. (Original) The method according to claim 1, wherein establishing the path compnses
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`receiving a request to establish the path from a preceding node in the communication network,
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`which is located upstream along the path, and wherein attaching the label comprises sending the
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`label to the preceding node, to be attached to the packets sent by the preceding node.
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`2
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 1 of 6
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`Application No. 11/123,801
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`
`Amendment dated July 28, 2008
`008
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`
`Reply to Office Action of May 14, 2
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`
`Docket No.: 06727/0202901-US0
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`6.(Original) The method according to claim 1, wherein establishing the path comprises receiving an
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`indication of a requested service property of the flow, and wherein selecting the port comprises
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`assigning the port to the flow so as to comply with the requested service property.
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`7.(Original) The method according to claim 6, wherein the requested service property comprises at
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`least one of a guaranteed bandwidth, a peak bandwidth and a class-of-service.
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`8 .. (Original) The method according to claim 7, wherein assigning the port comprises selecting the
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`port having a maximum available bandwidth out of the plurality of aggregated ports.
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`9.(Original) The method according to claim 7, wherein assigning the port comprises selecting the
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`port having a minimum available bandwidth out of the plurality of aggregated ports, which is still
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`greater than or equal to the guaranteed bandwidth.
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`10.(Original) The method according to claim 1, wherein switching the data packets comprises
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`mapping the data packets to the selected port responsively to the label.
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`11.(Original) The method according to claim 10, wherein mapping the data packets comprises
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`applying a hashing function to the label so as to determine a number of the selected port, and
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`wherein choosing the label comprises applying an inverse of the hashing function to the number of
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`the selected port.
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`12.(Original) The method according to claim 10, wherein choosing the label comprises inserting
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`port, and wherein into the label one or more bits that correspond to a number of the selected
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`mapping the data packets comprises extracting the one or more bits from the label so as to
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`determine the number of the selected port.
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`3
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 2 of 6
`
`

`

`Application No. 11/123,801
`
`
`Amendment dated July 28, 2008
`
`Reply to Office Action of May 14, 2008
`
`
`
`Docket No.: 06727/0202901-US0
`
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`13.(Original) The method according to claim 10, wherein choosing the label comprises storing the
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`label and a number of the selected port in a memory, and wherein mapping the data packets
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`comprises extracting the number from the memory responsively to the label so as to determine the
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`number of the selected port.
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`14.(Original) The method according to claim 1, and comprising:
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`allocating another port from among the plurality of aggregated ports, different from the
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`selected port, to serve as a backup port; and
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`responsively to a service interruption of the selected port, replacing the selected port with the
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`backup port as part of the path.
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`15.(Currently amended) Apparatus for processing data packets at a node in a communication
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`network, the apparatus comprising:
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`a plurality of aggregated ports, which are connected to another node in the communication
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`data to transmit the network, are configured as a Link Aggregation (LAG) group, and are arranged
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`packets to the other node over a respective plurality of physical links;
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`a mapper, which is arranged to receive the data packets from the network, and to map the
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`data packets to the plurality of aggregated ports for onward transmission; and
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`a processor, which is arranged to establish the f!: path for a flow of the data packets through
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`the communication network, to select a port from among the plurality of aggregated ports LAG
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`group to serve as part of the path, to choose a label responsively to the selected port, and to cause
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`the chosen label to be attached to the data packets in the flow at a point on the path upstream from
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`the node, so that the mapper, upon receiving the data packets, switches the data packets through the
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`selected port to the other node responsively to the label.
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`16.(Original) The apparatus according to claim 15, wherein the path comprises a tunnel through
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`the communication network.
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`4
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 3 of 6
`
`

`

`Application No. 11/123,801
`
`
`Amendment dated July 28, 2008
`
`
`Reply to Office Action of May 14, 2008
`
`
`
`Docket No.: 06727/0202901-US0
`
`
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`17.(Original) The apparatus according to claim 16, wherein the tunnel comprises a MPLS (Multi­
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`and respond Protocol Label Switching) tunnel, and wherein the processor is arranged to receive to a
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`RSVP-TE (Resource Reservation Protocol) PATH message so as to establish the tunnel.
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`18.(Currently amended) The apparatus according to claim 15, wherein the plurality of
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`aggregated ports comprises a LAG (Link frggregation) group, according conforms to an IEEE
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`802.3ad specification.
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`19. (Original) The apparatus according to claim 15, wherein the processor is arranged to receive
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`a request to establish the path from a preceding node in the communication network, which is
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`located upstream along the path, and to send the label to the preceding node, to be attached to the
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`packets sent by the preceding node.
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`20.(Original) The apparatus according to claim 15, wherein the processor is arranged to receive an
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`indication of a requested service property of the flow, and to assign the port to the flow so as to
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`comply with the requested service property.
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`21.(Original) The apparatus according to claim 20, wherein the requested service property
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`comprises
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`at least one of a guaranteed bandwidth, a peak bandwidth and a class-of-service.
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`22.(Original) The apparatus according to claim 21, wherein the processor is arranged to select the
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`port having a maximum available bandwidth out of the plurality of aggregated ports.
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`23.(Original) The apparatus according to claim 21, wherein the processor is arranged to select the
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`port having a minimum available bandwidth out of the plurality of aggregated ports, which is still
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`greater than or equal to the guaranteed bandwidth.
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`24.(Original) The apparatus according to claim 15, wherein the mapper is arranged to map the data
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`packets· to the selected port responsively to the label.
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`5
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 4 of 6
`
`

`

`Application No. 11/123,801
`
`
`Amendment dated July 28, 2008
`
`Reply to Office Action of May 14, 2008
`
`
`
`Docket No.: 06727/0202901-US0
`
`
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`25.(Original) The apparatus according to claim 24, wherein the mapper is arranged to apply a
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`hashing function to the label so as to determine a number of the selected port, and wherein the
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`processor is arranged to apply an inverse of the hashing function to the number of the selected port.
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`26.(Original) The apparatus according to claim 24, wherein the processor is arranged to insert into
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`the label one or more bits that correspond to a number of the selected port, and wherein the mapper
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`is arranged to extract the one or more bits from the label so as to determine the number of the
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`selected port.
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`27.(Original) The apparatus according to claim 24, wherein the processor is arranged to store the
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`label and a number of the selected port in a memory, and wherein the mapper is arranged to extract
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`the number from the memory responsively to the label, so as to determine the number of the
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`selected port.
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`28.(Original) The apparatus according to claim 15, wherein the processor is arranged to allocate
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`another port from among the plurality of aggregated ports, different from the selected port, to serve
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`as a backup port, and to replace the selected port with the backup port as part of the path,
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`responsively to a service interruption of the selected port.
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`29.(New) The method according to claim 1, wherein the node comprises a Label Switched
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`Router (LSR).
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`30.(New) The apparatus according to claim 15, wherein the node comprises a Label Switched
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`Router (LSR).
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`comprising:31.(New) A method for processing data packets in a communication network,
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`establishing a path for a flow of the data packets through the communication network;
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`6
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 5 of 6
`
`

`

`Application No. 11/123,801
`
`
`Amendment dated July 28, 2008
`
`
`Reply to Office Action of May 14, 2008
`
`
`
`Docket No.: 06727/0202901-US0
`
`
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`at a node along the path having a plurality of aggregated ports, mapping the data packets to
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`the ports by applying a hashing function to respective labels conveyed by the data packets;
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`selecting a port from among the plurality to serve as part of the path;
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`applying
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`an inverse of the hashing function to an index of the selected port, so as to produce
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`a label;
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`attaching the label to the data packets in the flow at a point on the path upstream from the
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`node;and
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`upon receiving the data packets at the node, switching the data packets through the selected
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`port responsively to the label.
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`32.(New) Apparatus for processing data packets at a node in a communication network, the
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`apparatus comprising:
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`a plurality of aggregated ports, which are arranged to transmit the data packets over a
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`respective plurality of physical links;
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`a mapper, which is arranged to receive the data packets from the network, and to map the
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`data packets to the plurality of aggregated ports for onward transmission by applying a hashing
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`function to respective labels conveyed by the data packets; and
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`a processor, which is arranged to establish a path for a flow of the data packets through the
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`communication network, to select a port from among the plurality of aggregated ports to serve as
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`part of the path, to apply an inverse of the hashing function to an index of the selected port so as to
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`produce
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`a label, and to cause the label to be attached to the data packets in the flow at a point on the
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`path upstream from the node, so that the mapper, upon receiving the data packets, switches the data
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`packets through the selected port responsively to the label.
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`7
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`Orckit Exhibit 2010
`Cisco Systems, Inc. v. Orckit Corp.
`IPR2023-00554, Page 6 of 6
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