A non-pseudonode is created by IS for propagating information about all other types of links connected to the router that are not broadcast networks, such as point-to-point networks and stub networks. A non-pseudonode LSP carries information about all neighbors, attached prefixes, and metrics of the attached links. NOTE A non-pseudonode could be equated to a router LSA in OSPF. In this case, the IS informs the router about differe..
Hundreds of thousands of data applications exist on the Internet, in all shapes and sizes. Some are TCP, others are UDP; some are delay sensitive, others are not; some are bursty in nature, others are steady; some are lightweight, others are bandwidth hogsthe list goes on. Data traffic characteristics vary from one application to another, as illustrated in Figure 2-4, which compares an enterprise resource planning (ERP) application (Oracle) with another (SAP). F..
If a DHCP server is centrally located in the network, you can configure the multilayer switch to relay DHCP messages between clients and the server, even if they are located on different VLANs or subnets. First, configure a Layer 3 interface that joins the same VLAN as the client machines. This interface can be the default gateway for the clients and can act as a DHCP relay. Next, use the ip helper-address command to identify the IP address of the actual DHCP server, as in t..
Controlling Multicast Scope with TTL
You can define a TTL threshold value for each interface on a router. The ttl-threshold command instructs the router to drop any multicast packets that have a TTL value less than or equal to the specified value. The router will receive packets on this interface normally. This command only affects transmission of multicast packets: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#ip multicast-routing Router1(confi..
RIP Version 1 does not support authentication. If you are sending and receiving RIP Version 2 packets, you can enable RIP authentication on an interface. The key chain determines the set of keys that can be used on the interface. If a key chain is not configured, no authentication is performed on that interface, not even the default authentication. Therefore, you must also perform the tasks in the section "Managing Authentication Keys" in the "Configuring IP Routing Proto..
