Examining the RP

In the current state of the ongoing example, as last shown in Figure 20-16, the RP (R3) has joined the SPT for source 10.1.1.10, group 228.8.8.8. The RP also is the root of the shared tree for group 228.8.8.8. Example 20-9 shows both entries in R3

IEEE 802.11 DCF

Interframe Spaces, shown in Figure 11-3, allow 802.11 to control which traffic gets first access to the channel when carrier sense declares the channel to be free. Figure 11-3. IEEE 802.11 DCF Interframe Spaces [View full size image]     802.11 currently defines three interf...

Changing VTY Timeouts

By default, the router will terminate an EXEC session after 10 minutes of inactivity. Often administrators find that 10 minute inactivity timers are a nuisance and dislike having to log in to a router several times throughout the day. So Cisco provides a way to modify or disable the inactivity time...

VTP Status

 The current VTP parameters for a management domain can be displayed using the show vtp status command. Example 5-1 demonstrates some sample output of this command from a switch acting as a VTP client in the VTP domain called CampusDomain. VTP message and error counters also can be displa...

Frame Relay Traffic Shaping Explained

Cisco's Frame Relay Traffic Shaping feature provides many parameters for handling users' traffic and managing congestion on Frame Relay networks. With Frame Relay Traffic Shaping, users are able to configure rate enforcement to either the CIR level or to other user-defined values on a per-VC basis. ...

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