NLSR

LSDB DataSet

=======

LSDB datasets are published in the namespace `/$ROUTER_NAME/lsdb/`:

## LSAs

All LSAs have 3 fields in common represented by an **LsaInfo** block:

    LsaInfo := LSA-TYPE TLV-LENGTH

                 OriginRouter

                 SequenceNumber

                 ExpirationPeriod?

    OriginRouter := ORIGIN-ROUTER-TYPE TLV-LENGTH

                      Name

    SequenceNumber := SEQUENCE-NUMBER-TYPE TLV-LENGTH

                        nonNegativeInteger

ExpirationPeriod is the remaining lifetime of an LSA or omitted if it's infinity.

## Adjacency LSAs

All Adjacency LSAs in the LSDB are published as a [[NFD:StatusDataset|Status Dataset]] at `/$ROUTER_NAME/lsdb/adjacencies`.

    AdjacencyLsa := ADJACENCY-LSA-TYPE TLV-LENGTH

                      LsaInfo

                      Adjacency+

    Adjacency := ADJACENCY-TYPE TLV-LENGTH

                   Name

                   Uri

                   Cost

## Coordinate LSAs

All Coordinate LSAs in the LSDB are published as a [[NFD:StatusDataset|Status Dataset]] at `/$ROUTER_NAME/lsdb/coordinates`.

    CoordinateLsa := COORDINATE-LSA-TYPE TLV-LENGTH

                       LsaInfo

                       HyperbolicRadius

                       HyperbolicAngle

    Double := DOUBLE-TYPE TLV-LENGTH(=8)

                double-precision floating-point number in binary64 format as defined in IEEE 754

    HyperbolicRadius := HYPERBOLIC-RADIUS-TYPE TLV-LENGTH

                          Double                      

    HyperbolicAngle := HYPERBOLIC-ANGLE-TYPE TLV-LENGTH

                         Double

## Name LSAs

All Name LSAs in the LSDB are published as a [[NFD:StatusDataset|Status Dataset]] at `/$ROUTER_NAME/lsdb/names`.

    NameLsa := NAME-LSA-TYPE TLV-LENGTH

                 LsaInfo

                 Name+

## LSDB Status

All LSAs in the LSDB are published as a [[NFD:StatusDataset|Status Dataset]] at `/$ROUTER_NAME/lsdb/list`.

The LSAs in the LSDB are organized and represented as an **LsdbStatus** block:

    LsdbStatus := LSDB-STATUS-TYPE TLV-LENGTH

                    AdjacencyLsa*

                    CoordinateLsa*

                    NameLsa*

## TLV-TYPE assignments

Type                                        | Assigned value    | Assigned value (hex)

------------------------------------------- | ----------------- | --------------------

LsaInfo                                     | 128               | 0x80

OriginRouter                                | 129               | 0x81

SequenceNumber                              | 130               | 0x82

AdjacencyLsa                                | 131               | 0x83

Adjacency                                   | 132               | 0x84

CoordinateLsa                               | 133               | 0x85

Double                                      | 134               | 0x86

HyperbolicRadius                            | 135               | 0x87

HyperbolicAngle                             | 136               | 0x88

NameLsa                                     | 137               | 0x89

LsdbStatus                                  | 138               | 0x8A