OpenView Network Node Manager: Designing and Implementing an Enterprise Solution

Router Interfaces and DNS

A router is a multihomed device because it has multiple network adapters. A file server with two fast Ethernet adapters is another example of a multihomed device. Each network adapter is typically assigned an IP address on a different subnet. You can reach a multihomed device using any one of the network adapters by specifying the IP address. For example, suppose the router named myrouter has two network adapters with the IP addresses 15.24.44.65 and 192.6.173.101. You can log in to myrouter using any of these commands:

					telnet 15.24.44.65
					telnet 192.6.173.101
					telnet myrouter
				

You normally don’t want to bother specifying the IP address of one of the adapters. If adapter 15.24.44.65 is down, then the telnet command to ...