Configuring the Pure Point-to-Point Network
If there are many VCs, there might not be enough bandwidth at the access speed of the interface to support the aggregate EIGRP traffic. The subinterfaces should be configured with a bandwidth that is much lower than the real speed of the circuit. In this case, it is necessary to use the bandwidth-percent command to indicate to the EIGRP process that it can still function. The ip bandwidth-percent-eigrp command adjusts the percentage of capacity that EIGRP may us..
Message switching is a technology that overlays packet- or circuit-switched networks. The routing paradigm is one of "store-and-forward." For example, suppose that, as shown in Figure 3-3, host X (Source) wants to send a message to host Y (Destination). Assume that host X cannot send the message directly to host Y because of network congestion, security limitations such as a firewall, or an outage. Instead, host X will pass the message to another node, C, that is closer to&nb..
For some time, the FCC has been encouraging the telephony industry, through legislation, to allow competition in both the long-distance and local-area markets. The Internet is already there without legislation, but certainly has used the help of government policy through the NSF. From a technological viewpoint, the peer-to-peer model of IP has contributed greatly to the ease with which competition has been introduced. Today, a number of national service provider..
Setting the IP Source Address for SNMP Traps
To set the default IP source address for all traps leaving a router, use the following configuration command: Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#snmp-server host 172.25.1.1 ORATRAP Router(config)#snmp-server trap-source loopback0 Router(config)#end Router# Normally, when you enable SNMP traps to a remote server, that server will see the source IP address of the router's closest interface. However, this..
Preventing Routing Domain Loops with Administrative Distance
Each router associates an administrative distance (AD) with every route it considers to be added to the routing table. When a router must consider multiple routes from different sources for the exact same prefix/length, the first item considered by the router is not the metric, but rather the AD. The lower the AD, the better the route. Note that the AD is a local setting on a router and cannot be advertised to neighboring routers. Each routing source has a default AD accordi..
