For many years and over many IOS releases, Cisco added QoS features and functions, each of which used its own separate set of configuration and exec commands. Eventually, the number of different QoS tools and different QoS commands got so large that QoS configuration became a big chore. Cisco created the Modular QoS CLI (MQC) to help resolve these problems, by defining a common set of configuration commands to configure many QoS features in a router or switch. MQC is not a to..
The show clns interface Command
Misconfiguration of the interface can result in the inability to create adjacencies. Typically, the error is a simple mismatch of parameters, which can be seen by using the show clns interface command. Router# show clns interface [type number] In Example 10-10, Frame Relay is configured with point-to-point links. The circuit ID shows the system ID of a router, rather than a pseudonode. The octet following the system ID indicates whether this ID is a pseudonode r..
Although it is possible to have a router attach to more than three areas, the Cisco Technical Assistance Center (TAC) recommends that a greater number of areas be created only after careful consideration. The results of having more areas will vary depending on the router (memory and CPU), as well as network topology and how many LSAs are generated. Various sources recommend that the number of routers per area not exceed 40 to 80; however, this is a rough guideline and not a s..
Policing a Subset of the Traffic
One of the advantages of CB Policing is the ability to perform policing per class. Example 16-9 shows CB Policing with HTTP traffic classified and policed differently than the rest of the traffic, with the following criteria: ■ Police web traffic at 80 kbps at ingress to the ISP-edge router. Transmit conforming and exceeding traffic, but discard violating traffic. ■ Police all other traffic at 16 kbps at ingress to the ISP-edge router. Mark down exceeding and violating ..
When LWAPP or CAPWAP tunnels are built from a WLC to one or more LAPs, the WLC can begin offering a variety of additional functions. Think of all the puzzles and shortcomings that were discussed for the traditional WLAN architecture as you read over the following list of WLC activities: ■ Dynamic channel assignment—The WLC chooses and configures the RF channel used by each LAP based on other active access points in the area. ■ Transmit power optimization—The WLC sets..
