Route Map match Commands for Route Redistribution

Route maps use the match command to define the fields and values used for matching the routes being processed. If more than one match command is configured in a single route-map clause, a route is matched only if all the match commands’ parameters match the route. The logic in each match command itself is relatively straightforward. Table 11-2 lists the match command options when used for IGP route redistribution. Table 11-2 match Command Options for IGP Redistribution &n..

Understanding Summarization

This section describes the process of summarization. Summarization is the technique of grouping IP networks together to minimize advertisements. For instance, imagine that a division's network consisted of the subnets 172.21.0.0/24 through 172.21.255.0/24. To advertise each network using a routing protocol, the division will send 256 advertisements to other divisions.  To extend the example, consider Figure 2-4. There are many routers in this company, but the three rou..

RIPV2 and the Distance Command

The distance command is used to change the administrative distance of the routing protocol and to sort the information received from different routing protocols. The default behavior of a Cisco router maintains RIP as the least believable protocol among all the interior gateway routing protocols. Now, consider the situation in Figure 7-7. As discussed in Chapter 6, RIP does not consider real-time parameters, which can cause suboptimal routing. R1 reaches the network 10.10.1..

MSM Layer 3 Switching

The initial Layer 3 switching engine for the Catalyst 6000 family consisted of the Multi-layer Switch Model (MSM). Based on Catalyst 8510 technology, the MSM provides a router-on-a-stick configuration integrated into the Catalyst 6000 chassis. Therefore, the MSM brings the power of the 8510 to the Catalyst 6000 family (namely IP and IPX routing at approximately 5 million packets per second [mpps]). Note The MSM contains a faster CPU that is currently used in the 8510. From..

Viewing SDLC Status Information

You can get a lot of useful SDLC information simply by looking at the interface: Router>show int serial1 Serial1 is up, line protocol is up   Hardware is HD64570   Description: Connection to three remote SDLC devices   MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,      reliability 255/255, txload 1/255, rxload 1/255   Encapsulation SDLC, loopback not set     Router link station role: PRIMARY (DCE)     R..