The 100 Gbps switch fabric of the E320 router allocates 3.4 Gbps of overall bandwidth to each regular line module slot and 10 Gbps of overall bandwidth to each of the turbo slots (slots 2 and 4). The line interface on the ES2 4G LM when installed in a 100 Gbps fabric configuration is 3.4 Gbps; you can achieve this rate with packet sizes greater than 128 bytes.
The 320 Gbps switch fabric of the E320 router allocates 10 Gbps of overall bandwidth to each line module slot. The line interface on the ES2 4G LM when installed in a 320 Gbps fabric configuration is 3.9 Gbps; you can achieve this rate with random packet sizes from 64–1518 bytes or a mixture of packet sizes that represent Internet mix traffic (IMIX).