- Layer: L3 (network)
- Header: 20 octets (fixed)
| Lower layer | Selector | Value |
|---|
ospfv3_lsu | num_lsas | (any other value) |
| Field | Type | Default | Auto | Description |
|---|
ls_age | uint(16) | 0 | | Time since the LSA was originated, in seconds (keep 0 for an exact Auto checksum). |
ls_type | enum(16) | 8193 (router) | Protocol number of the next layer (see Next layer) | LSA function code with U / S scope bits (Auto from the LSA body layer). |
link_state_id | uint(32) | 0 | | Link State ID identifying the described part of the network. |
advertising_router | ipv4 | 192.0.2.1 | | Router ID of the router that originated the LSA. |
ls_sequence | uint(32) | 2147483649 | | LSA sequence number (0x80000001 = initial). |
ls_checksum | uint(16) | | Fletcher checksum over the header and everything after it; ls_age counted as zero | Fletcher checksum of the LSA without LS age (Auto). |
length | uint(16) | | Length of the header and payload in octets | Length of the LSA including its header, in octets (Auto). |
| Value | Name |
|---|
| 8193 (0x2001) | router |
| 8194 (0x2002) | network |
| 8195 (0x2003) | inter_area_prefix |
| 8196 (0x2004) | inter_area_router |
| 16389 (0x4005) | as_external |
| 8199 (0x2007) | nssa |
| 8 (0x0008) | link |
| 8201 (0x2009) | intra_area_prefix |
The next layer is selected by ls_type; when the field is Auto the builder writes the value of the protocol stacked above.