NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch - Manual (Page 508)

Table 120. OSPFv3 Link State Database
Description Field
A 32-bit number in dotted-decimal format that identifies the switch within the
autonomous system (AS). To change the router ID, you must first disable OSPFv3. After
you set a new router ID, you must reenable OSPFv3 for the change to take effect. The
default value is 0.0.0.0, although this is not a valid router ID. Router ID
The ID of the OSPFv3 area to which one of the switch interfaces is connected. An area
ID is a 32-bit integer in dotted-decimal format that uniquely identifies the area to which
an interface is connected. Area ID
The format and function of the link state advertisement:
• Router LSA: A router can originate one or more Router LSAs for an area. A Router
LSA originates in an area and describes the collected states of all the router’s
interfaces connected to the area.
• Network LSA: A Network LSA is originated by the designated router for each link
to which two or more routers are attached. The LSA lists all the routers attached to
the link.
• Inter-Area Router LSA: This type LSA is originated by an Area Border Router (ABR)
and describes a prefix that is external to the area, yet internal to the autonomous
system (AS).
• AS-External LSA: This type of LSA is originated by an Autonomous System Border
Router (ASBR) and describes a path to a prefix external to the autonomous system
(AS).
• Link LSA: A router originates a separate Link LSA for each attached link. It provides
the router’s link local address to routers that are attached to the link as well as a list
of IPv6 prefixes that can be associated with the link.
• Intra-Area-Prefix LSA: A link’s designated router originates one or more
Intra-Area-Prefix LSAs to advertise the link’s prefixes throughout the area. A router
can originate multiple Intra-Area-Prefix LSAs for an area to advertise its own prefixes
and those of its attached stub links.
LSA Type
The link state ID identifies the part of the routing domain that is being described by
the advertisement. The value of the LS ID depends on the advertisement’s LS type. LS ID
The time in seconds since the link state advertisement was first originated. Age
A signed 32-bit integer that is used to detect old and duplicate link state
advertisements. The larger the sequence number, the more recent the advertisement. Sequence
The checksum of the complete contents of the advertisement, except the LS age field.
The checksum is used to detect data corruption of an advertisement. This corruption
can occur while an advertisement is being flooded, or while it is being held in a router’s
memory.
Checksum
Main User Manual 508 Configure OSPF and OSPFv3
Fully Managed Switches M4350 Series Main User Manual