Netgear XSM4324FS User Manual - Page 410

M4300 Intelligent Edge Series Fully Managed Stackable Switches Table 148. Advanced OSPFv3 Link State Database (continued) Field Description 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 as follows: • Q. This enables support for QoS traffic engineering. • E. This describes the way AS-external LSAs are flooded. • MC. This describes the way IP multicast datagrams are forwarded according to the standard specifications. • O. This describes whether opaque LSAs are supported. • V. This describes whether OSPF++ extensions for VPN/COS are supported. Router Options The router-specific options. The following table describes the nonconfigurable information that is displayed in the External Link State Database (LSDB) table. Table 149. Advanced OSPFv3 External Link State Database Table Field Router ID Description 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 Configuration page. To change the router ID you must first disable OSPFv3. After you set the 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. Configure OSPF and OSPFv3 410 User Manual