Configuring IPv6 663
– Intra-Area-Prefix-LSA
•
Link 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 advertisement's LS type.
•
Age
— The time since the link state advertisement was first originated, in seconds.
•
Sequence
— The sequence number field is a signed 32-bit integer. It is used to detect old and
duplicate link state advertisements. The larger the sequence number, the more recent the
advertisement.
•
Checksum
— 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. This
field is the checksum of the complete contents of the advertisement, except the LS age field.
•
Options
— The Options field in the link state advertisement header indicates which optional
capabilities are associated with the advertisement. The options are:
– V6 — When clear, the link is excluded from IPv6 routing calculations.
– E — Describes how AS-external-LSAs are flooded
– MC — Describes whether IP multicast datagrams are forwarded according to the specifications in
– N — Describes how Type-7 LSAs are handled
– R — Shows whether the originator is an active router. The R option is the router bit, and when it is
clear, routes that pass through the advertising node cannot be computed.
– DC — Describes how the system handles demand circuits.
•
Rtr Opt.
— Shows router-specific options.
Displaying OSPFv3 Link State Database Using CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the
CLI Reference Guide
:
• OSPFv3 Commands
The following table summarizes the equivalent CLI commands for this feature.
OSPFv3 Virtual Link Configuration
Use the OSPFv3 Virtual Link Configuration
page to define a new or configure an existing virtual link.
To display this page, a valid OSPFv3 area must be defined through the OSPFv3 Area Configuration page.
Table 10-21. OSPFv3 Link State Database Commands
CLI Command Description
show ipv6 ospf database Displays information about the link state database when OSPFv3 is
enabled.
show ipv6 ospf database database-summary Displays the number of each type of LSA in the database and the total
number of LSAs in the database.
