Netgear XSM4324FS User Manual - Page 383

M4300 Intelligent Edge Series Fully Managed Stackable Switches Table 138. OSPF AS Opaque Link State Database Table (continued) Field LS ID Age Sequence Checksum Description 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. The time since the link state advertisement was first originated, in seconds. 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. 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. Configure the OSPF Virtual Link To configure the OSPF virtual link: 1. Launch a web browser. 2. In the address field of your web browser, enter the IP address of the switch. The login window opens. 3. Enter admin as the user name, enter your local device password, and click the Login button. The first time that you log in, no password is required. However, you then must specify a local device password to use each subsequent time that you log in. The System Information page displays. 4. Select Routing > OSPF > Advanced > Virtual Link Configuration. 5. In the Area ID field, enter the OSPF area ID. An area ID is a 32-bit integer in dotted-decimal format that uniquely identifies the area to which a router interface connects. Configure OSPF and OSPFv3 383 User Manual