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Router Charts

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Mesh Charts

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More fun with Frame Bursting

For a look at best-case throughput improvement from 125* High Speed Mode, I repeated the three Frame Bursting Mode tests at Location 1. Results in Figures 19 and 20 show approximately 17% uplink (27.263 to 31.989 Mbps) and 39% downlink throughput improvement (23.053 to 31.933).

BuffaloTech WZR-RS-G54: Location 1 uplink - Frame Bursting mode comparison

Figure 19: Location 1 uplink - Frame Bursting mode comparison
(click image for larger view)

BuffaloTech WZR-RS-G54: Location 1 downlink - Frame Bursting mode comparison

Figure 20: Location 1 downlink - Frame Bursting mode comparison
(click image for larger view)

The last comparison I did was to see if the WZR could improve throughput for non-125* High Speed Mode Broadcom clients. I used a Linksys WPC54G (original rev) with Win XP 3.30.15.0 driver and once again ran uplink and downlink tests with the WZR set to its three Frame Bursting modes.

BuffaloTech WZR-RS-G54: Location 1 uplink - Frame Bursting mode comparison w/ Linksys WPC54G

Figure 21: Location 1 uplink - Frame Bursting mode comparison w/ Linksys WPC54G
(click image for larger view)

Figure 21 shows no improvement in best-case uplink throughput improvement with the Linksys card, but Figure 22 shows a boost in downlink throughput for both Frame Bursting and 125* High Speed Mode modes. But note that neither improvement matches the performance of the WZR with its matching 125* High Speed Mode-enabled card (the top trace in both plots).

BuffaloTech WZR-RS-G54: Location 1 downlink - Frame Bursting mode comparison w/ Linksys WPC54G

Figure 22: Location 1 downlink - Frame Bursting mode comparison w/ Linksys WPC54G
(click image for larger view)

Given these results, my recommendation would be to switch the WZR's Frame Bursting Mode to its Frame Bursting setting if you want to reach clients anywhere outside of the same room. You'll still get some throughput boost, but more importantly, you'll get vastly improved throughput vs. range performance.

By the way, security mode performance is excellent, with no discernible throughput change when using WEP 128 or WPA-PSK / TKIP or AES modes.

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