Turning on PIM

Starting PIM on an interface automatically starts IGMP. PIM is enabled at the interface level, so the first step is to analyze your network and understand which router interfaces should support PIM. Once identified, activate PIM in interface-configuration mode, as shown in the following syntax. PIM ...

Neighborship and Reliable Incremental Updates

EIGRP produces reliable updates by identifying its packets using IP protocol 88. Reliable, in a networking context, means that the receiver acknowledges that the transmission was received and understood. EIGRP only repeats itself if an advertisement is lost, so EIGRP is less "chatty" than other prot...

Understanding QoS

Appreciating what QoS tools and methods do to packets in a network is fundamental to appreciating the effect of individual QoS tools discussed in later chapters, and ultimately understanding the network designs and methods that constitute the material in this book. End-to-End QoS Regardless of h...

Technical Overview of Cisco IOS Frame Relay Compression Schemes

This section introduces the different compression schemes for Frame Relay that are supported by the Cisco IOS software. In general, users select a compression scheme that falls under either the payload compression scheme or packet header compression scheme.   Data Payload Comp...

Filtering PIM Neighbors

In this example, we will configure a neighbor filter on Router1's FastEthernet interface, which it uses to connect to a foreign router called Router2: Router1#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. Router1(config)#ip multicast-routing Router1...

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