четвъртък, юли 30, 2015

Juniper EX4200

From EX4200 datasheet

Packet Switching Capacities
• 48P/48T: 136 Gbps
• 24F: 88 Gbps
• 24P/24T: 88 Gbps
Aggregate Switch Capacities
• 24P/24T/24F: 216 Gbps
• 48P/48T: 264 Gbps

 The difference between the switching capacity and throughput is what they are measured in -> the capacity is in Gbps (gigabits per second) whereas the throughput is in Mpps (Megapackets per second).

48 x 1 Gbps -- 48 Gbps (48 x 1 Gbps ports) 2 x 10 Gbps -- + 20 Gbps (2 x 10 Gbps ports) --------- = 68 Gbps (total switching half duplex) x 2 (because switches are full duplex) --------- = 136 Gbps (total revenue switching capacity) + 128 Gbps (backplane bandwidth for VC) ---------- = 264 Gbps Total "switching" capacity per switch

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