ZyXEL ISG50-PSTN User Guide - Page 308

Chapter 15 Routing Protocols Click Configuration > Network > Routing > OSPF to open the following screen. Figure 204 Configuration > Network > Routing > OSPF The following table describes the labels in this screen. See Section 15.3.2 on page 309 for more information as well. Table 94 Configuration > Network > Routing Protocol > OSPF LABEL OSPF Router ID DESCRIPTION Select the 32-bit ID the ISG50 uses in the OSPF AS. Default - the highest available IP address assigned to the interfaces is the ISG50's ID. Redistribute Active RIP Type User Defined - enter the ID (in IP address format) in the field that appears when you select User Defined. Select this to advertise routes that were learned from RIP. The ISG50 advertises routes learned from RIP to Normal and NSSA areas but not to Stub areas. Select how OSPF calculates the cost associated with routing information from RIP. Choices are: Type 1 and Type 2. Type 1 - cost = OSPF AS cost + external cost (Metric) Metric Active Static Route Type Type 2 - cost = external cost (Metric); the OSPF AS cost is ignored. Type the external cost for routes provided by RIP. The metric represents the "cost" of transmission for routing purposes. The way this is used depends on the Type field. This value is usually the average cost in the OSPF AS, and it can be between 1 and 16777214. Select this to advertise routes that were learned from static routes. The ISG50 advertises routes learned from static routes to all types of areas. Select how OSPF calculates the cost associated with routing information from static routes. Choices are: Type 1 and Type 2. Type 1 - cost = OSPF AS cost + external cost (Metric) Type 2 - cost = external cost (Metric); the OSPF AS cost is ignored. 308 ISG50 User's Guide