Configuring the Default Metric for OSPF, IS-IS, RIP, or BGP

It is possible to redistribute the routing protocol and then, with a separate command, to state the default metric. There is no advantage to handling metric assignment within the redistribute command or separately.  IS-IS cannot define a default metric. The metric must be stated when redistributing. If no metric is stated, the default (0 cost) is entered and the route discarded. To configure the default metric for OSPF, RIP, or BGP, use the following command syntax: Ro..

Layer 2 Security

The Cisco SAFE Blueprint document (available at http://www.cisco.com/go/safe) suggests a wide variety of best practices for switch security. In most cases, the recommendations depend on one of three general characterizations of the switch ports, as follows: ■ Unused ports—Switch ports that are not yet connected to any device—for example, switch ports that are pre-cabled to a faceplate in an empty cubicle ■ User ports—Ports cabled to end-user devices, or any cablin..

Highway System

Now plan a road trip from Chicago to San Jose. Assume you have just moved to Chicago, you are not yet familiar with the area, and you need help getting out of the city. Before you plan your route, you first need to know where you are going and where you are coming from. Does that sound familiar? This is not unlike using the source and destination addresses in your postal system. Certainly to begin planning the route, you must know where you are starting; but after you begin t..

Foreign Agent Configuration

Here is a minimal configuration for a Foreign Agent to support Mobile Nodes: RouterForeign#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. RouterForeign(config)#router mobile RouterForeign(config-router)#exit RouterForeign(config)#router eigrp 99 RouterForeign(config-router)#network 192.168.110.0 RouterForeign(config-router)#no auto-summary RouterForeign(config-router)#exit RouterForeign(config)#interface Ethernet0/0 RouterForei..

Local Area Mobility

In this example, the roaming device will have a statically configured address in the 192.168.10.0/24 range. We have to configure the home router to use Proxy ARP for mobile nodes, allowing other locally connected devices in the same range to communicate transparently with the roaming device: RouterHome#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. RouterHome(config)#interface FastEthernet0/0 RouterHome(config-if)#ip address 192.168...