Netgear M5300-52G3 Web Management User Guide - Page 252

ProSafe M5300 Switch Field Description 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: • 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. Click REFRESH to show the latest OSPF Link State information. Virtual Link Configuration Use the OSPF Virtual Link Configuration page to create or configure virtual interface information for a specific area and neighbor. A valid OSPF area must be configured before this page can be displayed. To display the Virtual Link Configuration page, click Routing OSPF Advanced  Virtual Link Configuration. To configure an OSPF virtual link: 1. Use Area ID to enter the area ID of the OSPF area. Virtual links may be configured between any pair of area border routers having interfaces to a common (non-backbone) area. 2. Use Neighbor Router ID to enter the neighbor portion of a Virtual Link specification. Virtual links may be configured between any pair of area border routers having interfaces to a common (non-backbone) area. Routing 252