Layer 2 Protocols (Data Link Layer)
- ARCnet　Attached Resource Computer NETwork
- CDP Cisco Discovery Protocol
- DCAP Data Link Switching Client Access Protocol
- Distributed Multi-Link Trunking
- Distributed Split Multi-Link Trunking
- Dynamic Trunking Protocol
- Econet
- FDDI Fiber Distributed Data Interface
- Frame Relay
- ITU-T G.hn Data Link Layer
- HDLC High-Level Data Link Control
- IEEE 802.11 WiFi
- IEEE 802.16 WiMAX
- LACP Link Aggregation Control Protocol
- LattisNet
- LocalTalk
- L2F Layer 2 Forwarding Protocol
- L2TP Layer 2 Tunneling Protocol
- LAPD Link Access Procedures on the D channel
- LLDP Link Layer Discovery Protocol
- LLDP-MED Link Layer Discovery Protocol - Media Endpoint Discovery
- PAgP - Cisco Systems proprietary link aggregation protocol
- PPP Point-to-Point Protocol
- PPTP Point-to-Point Tunneling Protocol
- Q.710 Simplified Message Transfer Part
- Multi-link trunking Protocol
- RPR IEEE 802.17 Resilient Packet Ring
- SLIP Serial Line Internet Protocol (obsolete)
- StarLAN
- STP Spanning Tree Protocol
- Split multi-link trunking Protocol
- Token ring a protocol developed by IBM; the name can also be used to describe the token passing ring logical topology that it popularized.
- VTP VLAN Trunking Protocol
Read more about this topic: List Of Network Protocols (OSI Model)
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