2–PlanningiSCSI PerformanceISR651101-00 D 2-3BandwidthBandwidth is a measure of the volume of data that can be transmitted at a giventransmission rate. A 2-Gbps Fibre Channel port can transmit or receive at nominalrates of 2-Gbps, depending on the device to which it is connected. Thiscorresponds to actual bandwidth value of 212MB.LatencyLatency is a measure of how fast a transaction travels through the router.iSCSI PerformanceThe iSR6200 router supports Ethernet service at transmission rates of 1000-, 100-or 10-Mbps with an MTU size of 1500 or 9000 (jumbo frames).Related performance characteristics include the following: Distance Bandwidth LatencyDistanceConsider the physical distance between routers.This is usually measured inround-trip delay. Round-trip delays range anywhere from less than 1 millisecondto as great as 250 milliseconds.BandwidthBandwidth is a measure of the volume of data that can be transmitted at a giventransmission rate. WAN data rates range from 1.5 megabits per second (T1) togreater than 600 megabits per second (OC-12).LatencyLatency is a measure of how fast a transaction travels through the router andLAN/WAN.NOTE:An MTU size greater than 1500 should only be used when the router isconnected to a 1000Mbps Ethernet network.
