2018-07-26 12:45:10 -04:00
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.. _l2:
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=======
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Layer 2
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=======
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2018-09-06 07:52:59 -04:00
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This section identifies the features associated with Layer 2:
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2018-07-26 12:45:10 -04:00
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MAC Layer
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---------
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* Ethernet
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Discovery
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---------
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* Cisco Discovery Protocol
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* Link Layer Discovery Protocol (LLDP)
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Link Layer Control Protocol
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---------------------------
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* Bit Index Explicit Replication – Link Layer Multi-cast forwarding.
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* Link Layer Control (LLC) - multiplex protocols over the MAC layer.
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* Spatial Reuse Protocol (SRP)
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* High-Level Data Link Control (HDLC)
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* Logical link control (LLC)
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* Link Agg Control Protocol (Active/Active, Active/Passive) – 18.04
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Virtual Private Networks
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------------------------
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* MPLS
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* MPLS-o-Ethernet – Deep label stacks supported
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* Virtual Private LAN Service (VPLS)
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* VLAN
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* Q-in-Q
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* Tag-rewrite (VTR) - push/pop/Translate (1:1,1:2, 2:1,2:2)
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* Ethernet flow point Filtering
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* Layer 2 Cross Connect
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Bridging
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* Bridge Domains
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* MAC Learning (50k addresses)
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* Split-horizon group support
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* Flooding
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ARP
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---
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* Proxy
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* Termination
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* Bidirectional Forwarding Detection
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Integrated Routing and Bridging (IRB)
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-------------------------------------
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* Flexibility to both route and switch between groups of ports.
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* Bridged Virtual Interface (BVI) Support, allows traffic switched traffic to be routed.
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