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What are the different PVC encapsulation types?

April 26, 2017different encapsulation PVC types

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What are the different PVC encapsulation types?

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A. These are the four different PVC encapsulation types: • aal5ciscoppp—For Cisco proprietary PPP over ATM, aal5ciscoppp supports only Cisco routers with ATM or asymmetric digital subscriber line (ADSL) interfaces. Use this type of encapsulation when PPP authentication is desired. • aal5mux—AAL5 MUX encapsulation supports only a single protocol, IP or IPX, per PVC. • aal5nlpid—AAL5 Network Layer Protocol Identification (NLPID) encapsulation allows ATM interfaces in order to interoperate with High-Speed Serial Interfaces (HSSIs) that use an ATM data service unit (ADSU) and that run ATM-Data Exchange Interface (DXI). • aal5snap—AAL5 Logical Link Control/Subnetwork Access Protocol (LLC/SNAP) encapsulation supports Inverse ARP and incorporates the LLC/SNAP that precedes the protocol datagram. This allows the multiple protocols to transverse the same PVC. Note: aal5snap is the default encapsulation and the most widely used because it allows multiple protocols to be carried over one PVC.