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En esta página puede obtener un análisis detallado de una palabra o frase, producido utilizando la mejor tecnología de inteligencia artificial hasta la fecha:
- cómo se usa la palabra
- frecuencia de uso
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- etimología
Qué (quién) es Upper Layer Protocol - definición
NETWORK LAYER PROTOCOL
Packet-Layer Protocol
Upper Layer Protocol
<protocol> 1. (ULP, or upper-layer protocol)
Any protocol residing in OSI layers five or above.
The Internet protocol suite includes many upper layer
protocols representing a wide variety of applications
e.g. FTP, NFS, RPC, and SMTP. These and other network
applications use the services of TCP/IP and other {lower
layer protocols} to provide users with basic network services.
2. A protocol higher in the OSI reference model than the
current reference point. Upper Layer Protocol is often used
to refer to the next-highest protocol in a particular
protocol stack.
(1999-02-17)
L2TP
COMPUTER NETWORK PROTOCOL
NAS/LAC; L2TP; L2P; L2tp; Layer 2 tunneling Protocol; L2TP/IPsec; L2TP Network Server; L2TPv2
Layer 2 Tunneling Protocol (Reference: PPP, VPN, IP, RFC 2661)
Layer 2 Tunneling Protocol
COMPUTER NETWORK PROTOCOL
NAS/LAC; L2TP; L2P; L2tp; Layer 2 tunneling Protocol; L2TP/IPsec; L2TP Network Server; L2TPv2
In computer networking, Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as part of the delivery of services by ISPs. It uses encryption ('hiding') only for its own control messages (using an optional pre-shared secret), and does not provide any encryption or confidentiality of content by itself.
Wikipedia
Packet Layer Protocol
Packet Layer Protocol or PLP is the Network Layer protocol for the X.25 protocol suite. PLP manages the packet exchanges between DTE (data terminal) devices across VCs (virtual calls). PLP also can be used on ISDN using Link Access Procedures, D channel (LAPD).
There are 5 modes of PLP: call setup, data transfer, idle, call clearing, and restarting.
- Call setup mode is used to create VCs (virtual calls) between DTE devices. A PLP uses the 14-digit X.121 addressing scheme to set up the virtual call.
- Data transfer mode is used to send data between DTE devices across a virtual call. At this level PLP handles segmentation and reassembly, bit padding, error control and flow control.
- Idle mode is used when a virtual call is established but there is no data transfer happening.
- Call clearing mode is used to end sessions between DTE devices and to terminate VCs.
- Restarting mode is used to synchronize the transmission between a DTE device and its locally connected DCE (data communications) device.
There are 4 types of PLP packet fields:
- General Format Identifier (GFI): Identifies packet parameters (whether it is data or control information), what type of windowing is being used, and whether delivery confirmation is needed.
- Logical Channel Identifier (LCI): Identifies the virtual call across the local DTE/DCE interface.
- Packet Type Identifier (PTI): Identifies the PLP packet type (17 different types).
- User Data—Contains encapsulated upper-layer information when there is user data present, otherwise additional fields containing control information are added.
