network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
a network runs through it

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Thursday, March 15, 2012

broadcasts, multicasts...

routers and multilayer switches offer three essential functions in switched networks...

1) broadcast, multicast control
2) media transition
3) network segmenting services

routers do not forward broadcasts and multicasts by default.  broadcasts and multicasts are controlled...

by caching the addresses, and responding on behalf of remote hosts
by caching advertised network services, and responding on their behalf
by utilizing igmp and pim

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