Defining the Networks to Be Advertised
The network command determines the networks that are originated by this router. This is a different use of the network command than you are accustomed to configuring with EIGRP, OSPF, and RIP. This command does not identify the interfaces on which to run BGP; it states the networks that are available within the AS. Multiple network commands may be used as needed. The mask portion is used because BGP can handle subnetting and supernetting. The command syntax is Router(..
Removing a Path or Router from the Topology Table
The process of removing a path or router from the topology table is far more complex and gets to the crux of EIGRP. 1. If a network connected to Router A is disconnected, Router A updates its topology and routing table and sends an update to its neighbors. 2. When a neighbor receives the update, it updates the neighbor table and the topology table. 3. The neighbor searches for an alternative route to the remote network. It examines the topology tabl..
IP prefixes from each routing process are inserted in the central forwarding information base (FIB). This is the routing table used for actual packet forwarding. When there are two equal-length prefixes from the different RIBs or different routing processes or protocols, an administrative distance is applied to break the tie. This distance typically is applied to the whole routing process—with the notable exception being BGP, which has different administrative distances for..
FCAPS (fault, configuration, accounting, performance and security), the ISO model for network management, is a functional approach that segments management areas into discrete categories, which allows the network manager or management framework to address each in turn and ensure that no area is overlooked. FCAPS is a model, not a product. Many network management applications and designs adopt FCAPS, and internally developed procedures and tools can also be architected along t..
Configuring SDLC for Multidrop Connections
SDLC supports multidrop connections. These are serial links that connect to several downstream devices in series. Each device has its own SDLC address, which must be configured in the router. The global DLSw configuration for this example is omitted here because it is identical to the previous example: dlsw-branch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. dlsw-branch(config)#interface Serial1 dlsw-branch(config-if)#description Conn..
