LSA involved:
Route Information Opaque LSA (RFC4970)
OSPFv2 routers will advertise a link scoped, area-scoped, or AS-scoped Opaque-LSA [OPAQUE].
Extended Prefix Opaque LSA (RFC7684)
Allows advertisement of additional attributes for prefixes advertised in Router-LSAs, Network-LSAs, Summary-LSAs (IP network), NSSA-LSAs, and AS-external-LSAs [OSPFV2][RFC3101].
Extended Link Opaque LSA
Allows advertisement of additional attributes for links advertised in Router-LSAs.
TLV involved:
OSPFv2 Extended Prefix TLV
Top-level TLV advertising attributes for a prefix in the OSPFv2 Extended Prefix Opaque LSA
supported route types are:
0 - Unspecified
1 - Intra-Area
3 - Inter-Area
5 - Autonomous System (AS) External
7 - Not-So-Stubby Area (NSSA)External
OSPFv2 Extended Link TLV
Top-level TLV advertising attributes for a link in the OSPFv2 Extended Link Opaque LSA. Only one OSPFv2 Extended Link TLV SHALL be advertised in each OSPFv2
Extended Link Opaque LSA, allowing forfine granularity changes in the topology
Router Informational Capabilities TLV
SR-Algorithm TLV
The SR-Algorithm TLV is a top-level TLV of the Router Information Opaque LSA
SID/Label Range TLV
The SID/Label Range TLV is a top-level TLV of the Router Information Opaque LSA
SID/Label Binding Sub-TLV
The SID/Label Binding Sub-TLV is a Sub-TLV of the OSPF Extended Prefix TLV described in [RFC7684] and the OSPF Extended Prefix Range TLV described in Section 4
SID/Label Sub-TLV
The SID/Label Sub-TLV appears in multiple TLVs or Sub-TLVs defined later in this document MUST appear in the SID/Label Binding Sub-TLV and it SHOULD only appear once. If the SID/Label Sub-TLV is not included in the SID/Label Binding Sub-TLV, the SID/Label Binding Sub-TLV MUST be ignored.
SR Local Block Sub-TLV
the SR Local Block (SRLB) Sub-TLV is a top-level TLV of the Router Information Opaque LSA
Adj-SID Sub-TLV (note the V/L flag)
Adj-SID is an optional Sub-TLV of the Extended Link TLV defined in [RFC7684].
LAN Adj-SID Sub-TLV
LAN Adj-SID is an optional Sub-TLV of the Extended Link TLV defined in [RFC7684].
SRMS Preference Sub-TLV
The SRMS Preference Sub-TLV is a top-level TLV of the Router Information Opaque LSA
OSPF Extended Prefix Range TLV
a new top level TLV of the Extended Prefix LSA described in [RFC7684]
Prefix SID Sub-TLV (note the V/L flag)
The Prefix SID Sub-TLV is a Sub-TLV of the OSPF Extended PrefixTLV described in [RFC7684] and the OSPF Extended Prefix Range TLV described in Section 4.
ERO Metric Sub-TLV
The ERO Metric Sub-TLV is a Sub-TLV of the SID/Label Binding TLV.
ERO Sub-TLVs
All ERO Sub-TLVs must immediately follow the SID/Label Sub-TLV.
All Backup ERO Sub-TLVs must immediately follow the last ERO Sub-TLV.
IPv4 ERO Sub-TLV
The IPv4 ERO Sub-TLV is a Sub-TLV of the SID/Label BindingSub-TLV.
Unnumbered
Interface ID ERO Sub-TLV
The Unnumbered Interface ID ERO Sub-TLV is a Sub-TLV of theSID/Label Binding Sub-TLV.
IPv4 Backup ERO Sub-TLV
IPv4 Prefix Backup ERO Sub-TLV is a Sub-TLV of the SID/LabelBinding Sub-TLV.
Unnumbered Interface ID Backup ERO Sub-TLV
The Unnumbered Interface ID Backup ERO Sub-TLV is a Sub-TLV of theSID/Label Binding Sub-TLV.
SR standard arch overview
SR overview
SR architecture (cover two segment type: IGP segment, BGP peering segment and check its detail on item application in BGP peer engineering)
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-10 (Segment Routing Architecture draft-ietf-spring-segment-routing-10)
how SR operate on MPLS data plane (cover remain three segment type: LDP LSP segment, RSVP-TE LSP segment, BGP LSP segment)
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-mpls-05 (SegmentRouting with MPLS data plane draft-ietf-spring-segment-routing-mpls-05)
SR introduction from cisco
SR usecase
https://tools.ietf.org/html/draft-filsfils-spring-segment-routing-use-cases-01(Segment Routing Use Cases draft-filsfils-spring-segment-routing-use-cases-01)
BGP SR
BGP protocol extension
https://tools.ietf.org/html/draft-ietf-idr-bgp-prefix-sid-03 (Segment Routing Prefix SID extensions for BGPdraft-ietf-idr-bgp-prefix-sid-03)
applicationin BGP peer engineering
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-central-epe-02 (Segment Routing Centralized BGP Peer Engineeringdraft-ietf-spring-segment-routing-central-epe-02)
applicationin data center
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-msdc-02 (BGP-Prefix Segment in large-scale data centersdraft-ietf-spring-segment-routing-msdc-02)
BGP-LS introduction
https://www.ietf.org/proceedings/89/slides/slides-89-idr-6.pdf
https://www.ietf.org/archive/id/draft-gredler-idr-bgp-ls-segment-routing-extension-02.txt (BGP Link-State extensions for Segment Routingdraft-gredler-idr-bgp-ls-segment-routing-extension-02)
IGP SR
Router Information (RI) Link State Advertisement (LSA)
https://tools.ietf.org/html/rfc4970 (Extensions to OSPF for Advertising Optional Router Capabilities)
OSPFv2 protocol extension
https://tools.ietf.org/html/draft-ietf-ospf-segment-routing-extensions-10 (OSPF Extensions for Segment Routing draft-ietf-ospf-segment-routing-extensions-10)
https://tools.ietf.org/html/rfc7684 (OSPFv2 Prefix/Link Attribute Advertisement)
OSPVv3 protocol extension
https://tools.ietf.org/html/draft-ietf-ospf-ospfv3-segment-routing-extensions-07(OSPFv3 Extensions for Segment Routingdraft-ietf-ospf-ospfv3-segment-routing-extensions-07)
ISIS protocol extension
https://tools.ietf.org/html/draft-ietf-isis-segment-routing-extensions-09(IS-IS Extensions for Segment Routing draft-ietf-isis-segment-routing-extensions-09)
consist of a standard LSA header followed by application-specific information
https://tools.ietf.org/html/rfc5250 (The OSPF Opaque LSA Option)
legacy BGP protocol to carry label information
https://tools.ietf.org/html/rfc3107(Carrying Label Information in BGP-4)
