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US 2025/0168104 A1Published application
Segment routing ipv6 extension to support multicast in ran and pc
AssigneeMavenir Systems, Inc.
InventorAnish Peter
Life of this patent
Estimating the term…
Abstract
Point-to-Multipoint (p2mp) delivery of data in a SRv6 network for multicast/p2mp data delivery. Function and Argument bits are encoded Segment Routing (SRv6) as a Last Significant Bit in an IPv6 address. An SRv6 node can be encoded with a Segment ID to tunnel multicast through a node that does not support Bit Index Explicit Replication (BIER) SRv6 forwarding.
Claims17
A method comprising:
- providing an Internet Protocol Version (IPv6) index format including a bitstring configured to address egress routers in a Bit Index Explicit Replication (BEIR) subdomain for Point-to-Multipoint delivery of data for Segment Routing (SR), the bitstring being a Bit-Index-6 format (BI6) configured to identify each of the egress routers with a Bit-Forwarding Router id (BFR-id), wherein the BFR-id translates to a Set Identifier (SI) and bitstring, wherein the SI is identified by a SI Locator, the SI Locator is a routable prefix configured to reach a specific set of the egress routers in the SI, and the IPv6 index format includes a Function bit and an Argument bit each configured as a Last Significant Bit (LSB) in an IPv6 address.
A method comprising:
- obtaining at a router a notice of a Bit-Index-6 format (BI6) capability of a neighboring device;
- forming a map of a Bit-Forwarding Egress Router BFER to the nearest Bit-Forwarding Router (BFR) in an egress path;
- and
- if a BFR is not connected, inserting the non-connected BFR's Segment ID (SID) into a packet SRH prior to forwarding the packet.
1 more element
An apparatus comprising:
- a router configured to at least obtain a notice of a Bit-Index-6 format (BI6) capability of a neighboring device;
- form a map of a Bit-Forwarding Egress Router BFER to the nearest Bit-Forwarding Router (BFR) in an egress path;
- and if a BFR is not connected, inserting the non-connected BFR's Segment ID (SID) into a packet SRH prior to forwarding the packet.
Dependencies are inferred from the claim text.