- 888 -
Non-Configurable Da ta
Router ID - The 32 bit integer in dotted decimal format that uniquely identifies the router within the
autonomous system (AS). The Router ID is set on the OSPFv3 Interface Configuration page. If you
want to change the Router ID you must first disable OSPFv3. After you set the new Router ID, you
must re-enable OSPFv3 to have the cha nge take effect. The defaul t value is 0.0.0.0, although this is
not a valid Router ID.
Area ID - The ID of an OSPFv3 area to which one of the router interfaces is con nected. An Area ID is
a 32 bit integer in dotted decimal format that uniquely identifies the area to which an interface is
connected.
LSA Type - The format and function of the link st ate advertisement. One of the following:
• Router Links
• Network Links
• Network Summary
• ASBR Summary
• AS-external
LS ID - The Link State ID identifies the piece of the routing domain that is being described by the
advertisement. The value of the LS ID depends on the advertisemen t 's LS type.
Age - The time since the link state advert i seme nt was first originated, in seconds.
Sequence - The sequence numbe r field is a signed 32-bit integer. It is used to detect old and
duplicate link state advertisements. The large r the sequence number, the more recent the
advertisement.
Checksum - The checksu m 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. This
field is the checksum of the complete contents of the advertisement, except the LS age field.
Options - The Options field in the link st ate advertisement header indicates which optional
capabilities are associated with the advertisement.
Rtr Options - The router specific options.
Command Buttons
Refresh - Refresh the data on the screen with the present state of the data in the switch.