Installation guide

2–Planning
iSCSI Performance
ISR651101-00 C 2-3
Bandwidth
Bandwidth is a measure of the volume of data that can be transmitted at a given
transmission rate. A 2-Gbps Fibre Channel port can transmit or receive at nominal
rates of 2-Gbps, depending on the device to which it is connected. This
corresponds to actual bandwidth value of 212 MB.
Latency
Latency is a measure of how fast a transaction travels through the router.
iSCSI Performance
The 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
 Latency
Distance
Consider the physical distance between routers.This is usually measured in
round-trip delay. Round-trip delays range anywhere from less than 1 millisecond
to as great as 250 milliseconds.
Bandwidth
Bandwidth is a measure of the volume of data that can be transmitted at a given
transmission rate. WAN data rates range from 1.5 megabits per second (T1) to
greater than 600 megabits per second (OC-12).
Latency
Latency is a measure of how fast a transaction travels through the router and
LAN/WAN.
NOTE:
An MTU size greater than 1500 should only be used when the router is
connected to a 1000 Mbps Ethernet network.