| .. _l2: |
| |
| ======= |
| Layer 2 |
| ======= |
| |
| This section identifies the features associated with Layer 2: |
| |
| MAC Layer |
| --------- |
| * Ethernet |
| |
| Discovery |
| --------- |
| * Cisco Discovery Protocol |
| * Link Layer Discovery Protocol (LLDP) |
| |
| Link Layer Control Protocol |
| --------------------------- |
| * Bit Index Explicit Replication – Link Layer Multi-cast forwarding. |
| * Link Layer Control (LLC) - multiplex protocols over the MAC layer. |
| * Spatial Reuse Protocol (SRP) |
| * High-Level Data Link Control (HDLC) |
| * Logical link control (LLC) |
| * Link Agg Control Protocol (Active/Active, Active/Passive) – 18.04 |
| |
| Virtual Private Networks |
| ------------------------ |
| * MPLS |
| |
| * MPLS-o-Ethernet – Deep label stacks supported |
| |
| * Virtual Private LAN Service (VPLS) |
| * VLAN |
| * Q-in-Q |
| * Tag-rewrite (VTR) - push/pop/Translate (1:1,1:2, 2:1,2:2) |
| * Ethernet flow point Filtering |
| * Layer 2 Cross Connect |
| |
| Bridging |
| --------- |
| * Bridge Domains |
| * MAC Learning (50k addresses) |
| * Split-horizon group support |
| * Flooding |
| |
| ARP |
| --- |
| * Proxy |
| * Termination |
| * Bidirectional Forwarding Detection |
| |
| Integrated Routing and Bridging (IRB) |
| ------------------------------------- |
| * Flexibility to both route and switch between groups of ports. |
| * Bridged Virtual Interface (BVI) Support, allows traffic switched traffic to be routed. |
| |
| |