Cabletron Systems CyberSWITCH CSX200 Configuration Manual

Also see for CyberSWITCH HSIM-W6: Setup guide User guide User guide Installation guide

Contents

Bridging and Routing ConfigurationQuickSET Configuration Guide51Modify IP Host WindowThe Modify IP Host window (Figure 52, below) appears when you click on the Modify button inthe IP Host Map window. The host data displayed will correspond to the Interface Numberdisplayed in the IP Host Map window. When you have finished modifying the data, click the OKbutton to enter the new data into the database. The database will be saved when you click the Savebutton and then exit QuickSET.Figure 52 Modify IP Host WindowOSPF Settings — The OSPF Settings window shown in Figure 53, on the following page,displays after clicking on the OSPF button in the Advanced Routing Configuration window. OSPFOSPF (Open Shortest Path First) is a Link-State Protocol. OSPF distributes routing informationbetween routers belonging to a single Autonomous System (AS). In an Autonomous System,routers exchange routing information through a common routing protocol.An Autonomous System may contain one or more networks, but each network within the AS mayor may not support subnetting. Every OSPF routing domain must have a “Backbone”. An OSPFbackbone distributes routing information between areas in an OSPF routing domain. Thebackbone of an OSPF routing domain is an OSPF area possessing an area ID of 0.0.0.0.Because OSPF Protocol only broadcasts link state updates when the topology has changed, it isconsidered “quiet” when compared to RIP Protocol, which has to periodically send a portion, or allof its routing table to its neighbors.Convergence (the time it takes to recalculate routing tables) under the OSPF Protocol isinstantaneous and not periodic because of the use of IP Multicast to send the link-state updates.Updates are only sent when routing changes occur instead of periodically, ensuring better use ofavailable bandwidth.