This soft copy for use by IBM employees only.
Table 11 (Page 2 of | 2). Bandwidth Improvement with Ethernet LAN Switch Module | |||||
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Device |
| Maximum Bandwidth Available (Kbps) | Bandwidth | |||
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| Server | ATM | Micro- | ATM25 | |
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| Ratio2 | ||||
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| Offload | Server | segment | Offload | |
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Ethernet Desktop |
| 250 | 250 | 4000 | 57143 | 25x |
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ATM Desktop |
| 250 | 250 | 4000 | 25000 | 110x |
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Note:
1In this case assuming an even distribution of three workstations per segment on each of 16 available Ethernet segments.
2Calculated by dividing the total bandwidth available after the change by the original bandwidth available per device, which was calculated by dividing the total bandwidth available by the number of devices sharing it. In this case, the original bandwidth calculation is: 10,000 Kbps/segment *
1 segment / (40 users + 4 servers) = 227 Kbps/device. To be fair, this is a nominal value: in reality, the available bandwidth on a shared Ethernet segment rarely exceeds
3This is an average value. The four segments with one device would actually receive 10,000 Kbps/device, while the remaining 12 segments would have two devices a piece, each receiving 5,000 Kbps.
