OSPFv3 Message Format
- OSPFv3 Hello packet
- OSPFv3 database description packet
OSPFv3 Message Format
┃ 8bit | 8bit | 8bit | 8bit ┃
┏---------+------+----------------┓
┃Version=3| Type | Packet Length ┃
┠---------+------+----------------┨
┃ Router ID ┃
┠---------------------------------┨
┃ Area ID ┃
┠----------------+---------+------┨
┃ Checksum | 实例ID | 0x00 ┃
┠----------------+---------+------┨
OSPFv3 Hello packet
┃ 8bit | 8bit | 8bit | 8bit ┃
┏---------+------+----------------------┓
┃Version=3|Type=1| Packet Length ┃
┠---------+------+----------------------┨
┃ Router ID ┃
┠---------------------------------------┨
┃ Area ID ┃
┠----------------+---------+------------┨
┃ Checksum | 实例ID | 0x00 ┃
┠----------------+---------+------------┨
┃ Hello Interval | Router Dead Interval ┃
┠----------------+----------------------┨
┃ Designated Router ┃
┠---------------------------------------┨
┃ Back-up Designated Router ┃
┠---------------------------------------┨
┃ Neighbor ┃
┠---------------------------------------┨
┃ ... ┃
┠---------------------------------------┨
┃ Neighbor ┃
┗---------------------------------------┛
OSPFv3 database description packet
┃ 8bit | 8bit | 8bit | 8bit ┃
┏---------+------+---------------------┓
┃Version=3|Type=2| Packet Length ┃
┠---------+------+---------------------┨
┃ Router ID ┃
┠--------------------------------------┨
┃ Area ID ┃
┠----------------+---------+-----------┨
┃ Checksum | 实例ID | 0x00 ┃
┠---------+------+---------+-----------┨
┃ 0x00 | Option ┃
┠---------+------+--------+-----+-+-+--┨
┃ Interface MTU | 0x00 |00000|I|M|MS┃
┠----------------+--------+-----+-+-+--┨
┃ DD Sequence Number ┃
┠--------------------------------------┨
┃ LSA Header ┃
┗--------------------------------------┛
I:Initial bit
M:More bit
MS:Master/Slave bit