These queues empty at different rates depending on port speeds or network congestion.Įgress Policy – Egress policy examines outgoing frames and modifies them (Tagging/Un-tagging frames based on 802.1Q or Port based VLANs) as they exit the switch. Output Queues – The output queues transmit the received packets in the order received for any given priority. Queue Controller – The brain of the switch which controls the switching architecture.
These ingress policies determine the states of the switch management ports and implement features like Port Based VLANs or 802.1Q VLANs (tag processing). Ingress policies examine an incoming frame for Quality of Service (QoS) priority information for the Queue Controller. Ingress Policy – Used to modify the normal flow of frames through the switch. GMAC – Gigabit Media Access Controller responsible for frame formatting, frame stripping, FCS (Frame Check Sequence), CSMA/CD handling and collision handling. PHY – Physical interface to receive and transmit frame to and from a port’s Gigabit MAC.
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