Difference between revisions of "CCNA Explorer 4 Frame relay"
From Teknologisk videncenter
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| + | == Virtual Circuits == | ||
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| + | There are two ways to establish VCs: | ||
| + | |||
| + | *SVCs, switched virtual circuits, are established dynamically by sending signaling messages to the network (CALL SETUP, DATA TRANSFER, IDLE, CALL TERMINATION). | ||
| + | *PVCs, permanent virtual circuits, are preconfigured by the carrier, and after they are set up, only operate in DATA TRANSFER and IDLE modes. Note that some publications refer to PVCs as private VCs. | ||
| + | *EN VC er kendt lokalt via sin DLCI - Data Link Connection Identifier. Har kun lokal betydning. | ||
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| + | == (IP) adresse til DLCI mapping == | ||
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| + | === Statisk Adresse til DLCI mapping === | ||
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|[[Image:Exp4fr15.png|800px|left|thumb|Address to DLCI mapping]] | |[[Image:Exp4fr15.png|800px|left|thumb|Address to DLCI mapping]] | ||
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| + | === Dynamisk Adresse til DLCI mapping === | ||
| + | Interfacet udsender Inverse ARP request på alle kendte [[DLCI]]er og modtager addresse retur. (IP) | ||
| + | *Dynamisk Mapping er default aktiveret på alle Cisco Routere. (Inverse ARP) | ||
| + | === LMI - Local Management Interface === | ||
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| + | |[[Image:Exp4fr16.png|800px|left|thumb|Statisk DLCI Mapping]] | ||
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|} | |} | ||
[[Category:CCNA]] | [[Category:CCNA]] | ||
Revision as of 05:41, 10 September 2009
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