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Advance Member
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上個星期訂了一組 ZyXEL合勤 (PLA-4225) 後再家裡測試，卻發現一個很奇怪的現象
我家有兩個電錶，竟然只有一段電線不能通，而這一段電線有經過兩個 NFC
這一段不能通應該算是正常的
不正常的是我爸口中說的不同電表的區域，竟然也可以通
附上在我家的測試結果
PLC 測試
Server 端：windows xp sp3
Client 端：Mac OS X 10.8.2
下面說的 local 是指網路訊號來源的哪一台，remote 是目的地也就是輸出端
（上面的名稱有點怪，都是我自己亂想的）
＝＝＝＝＝1.直接接在 giga switch 上面測試＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 52112 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 1.10 GBytes 945 Mbits/sec
[ 4] 10.0-20.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 20.0-30.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 30.0-40.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 40.0-50.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 50.0-60.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 60.0-70.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 70.0-80.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 80.0-90.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 90.0-100.0 sec 1.10 GBytes 946 Mbits/sec
[ 4] 100.0-110.0 sec 1.10 GBytes 945 Mbits/sec
[ 4] 0.0-120.0 sec 13.2 GBytes 946 Mbits/sec
＝＝＝＝＝2.兩個都裝在延長線上面＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 51712 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 67.1 MBytes 56.3 Mbits/sec
[ 4] 10.0-20.0 sec 67.4 MBytes 56.5 Mbits/sec
[ 4] 20.0-30.0 sec 67.0 MBytes 56.2 Mbits/sec
[ 4] 30.0-40.0 sec 69.9 MBytes 58.6 Mbits/sec
[ 4] 40.0-50.0 sec 70.5 MBytes 59.1 Mbits/sec
[ 4] 50.0-60.0 sec 70.1 MBytes 58.8 Mbits/sec
[ 4] 60.0-70.0 sec 70.4 MBytes 59.0 Mbits/sec
[ 4] 70.0-80.0 sec 70.1 MBytes 58.8 Mbits/sec
[ 4] 80.0-90.0 sec 68.5 MBytes 57.5 Mbits/sec
[ 4] 90.0-100.0 sec 70.0 MBytes 58.7 Mbits/sec
[ 4] 100.0-110.0 sec 68.9 MBytes 57.8 Mbits/sec
[ 4] 0.0-120.0 sec 829 MBytes 57.9 Mbits/sec
＝＝＝＝＝3.local 端直接接在牆壁上，remote延長線上＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 51762 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 97.4 MBytes 81.7 Mbits/sec
[ 4] 10.0-20.0 sec 94.0 MBytes 78.9 Mbits/sec
[ 4] 20.0-30.0 sec 94.6 MBytes 79.4 Mbits/sec
[ 4] 30.0-40.0 sec 95.5 MBytes 80.1 Mbits/sec
[ 4] 40.0-50.0 sec 93.9 MBytes 78.7 Mbits/sec
[ 4] 50.0-60.0 sec 100 MBytes 84.2 Mbits/sec
[ 4] 60.0-70.0 sec 97.5 MBytes 81.8 Mbits/sec
[ 4] 70.0-80.0 sec 93.5 MBytes 78.4 Mbits/sec
[ 4] 80.0-90.0 sec 109 MBytes 91.6 Mbits/sec
[ 4] 90.0-100.0 sec 98.5 MBytes 82.6 Mbits/sec
[ 4] 100.0-110.0 sec 94.6 MBytes 79.4 Mbits/sec
[ 4] 110.0-120.0 sec 88.6 MBytes 74.3 Mbits/sec
[ 4] 0.0-120.0 sec 1.13 GBytes 80.9 Mbits/sec
＝＝＝＝＝4.local 和 remote 都接在牆壁上，目測距離3公尺，remote電腦的網路線5公尺＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 51845 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 106 MBytes 89.3 Mbits/sec
[ 4] 10.0-20.0 sec 108 MBytes 90.4 Mbits/sec
[ 4] 20.0-30.0 sec 110 MBytes 92.6 Mbits/sec
[ 4] 30.0-40.0 sec 110 MBytes 92.7 Mbits/sec
[ 4] 40.0-50.0 sec 111 MBytes 93.2 Mbits/sec
[ 4] 50.0-60.0 sec 110 MBytes 92.1 Mbits/sec
[ 4] 60.0-70.0 sec 107 MBytes 89.9 Mbits/sec
[ 4] 70.0-80.0 sec 107 MBytes 89.5 Mbits/sec
[ 4] 80.0-90.0 sec 108 MBytes 90.9 Mbits/sec
[ 4] 90.0-100.0 sec 109 MBytes 91.8 Mbits/sec
[ 4] 100.0-110.0 sec 106 MBytes 89.1 Mbits/sec
[ 4] 110.0-120.0 sec 106 MBytes 88.8 Mbits/sec
[ 4] 0.0-120.0 sec 1.27 GBytes 90.9 Mbits/sec
=====5.local 和 remote 都接在牆壁上，目測距離3公尺，remote電腦的網路線2公尺＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 52035 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 106 MBytes 88.5 Mbits/sec
[ 4] 10.0-20.0 sec 110 MBytes 92.0 Mbits/sec
[ 4] 20.0-30.0 sec 112 MBytes 94.1 Mbits/sec
[ 4] 30.0-40.0 sec 109 MBytes 91.8 Mbits/sec
[ 4] 40.0-50.0 sec 109 MBytes 91.5 Mbits/sec
[ 4] 50.0-60.0 sec 107 MBytes 89.4 Mbits/sec
[ 4] 60.0-70.0 sec 106 MBytes 89.3 Mbits/sec
[ 4] 70.0-80.0 sec 107 MBytes 89.5 Mbits/sec
[ 4] 80.0-90.0 sec 109 MBytes 91.3 Mbits/sec
[ 4] 90.0-100.0 sec 110 MBytes 91.9 Mbits/sec
[ 4] 100.0-110.0 sec 110 MBytes 92.2 Mbits/sec
[ 4] 110.0-120.0 sec 108 MBytes 90.8 Mbits/sec
[ 4] 0.0-120.0 sec 1.27 GBytes 91.0 Mbits/sec
＝＝＝＝＝6.同上，只是remote 換到另一個插座＝＝＝＝＝
shinn~ iperf -c 192.168.1.176 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.1.176, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.1.11 port 52152 connected with 192.168.1.176 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 93.2 MBytes 78.2 Mbits/sec
[ 4] 10.0-20.0 sec 94.4 MBytes 79.2 Mbits/sec
[ 4] 20.0-30.0 sec 92.8 MBytes 77.8 Mbits/sec
[ 4] 30.0-40.0 sec 93.1 MBytes 78.1 Mbits/sec
[ 4] 40.0-50.0 sec 94.5 MBytes 79.3 Mbits/sec
[ 4] 50.0-60.0 sec 94.6 MBytes 79.4 Mbits/sec
[ 4] 60.0-70.0 sec 94.8 MBytes 79.5 Mbits/sec
[ 4] 70.0-80.0 sec 95.9 MBytes 80.4 Mbits/sec
[ 4] 80.0-90.0 sec 96.6 MBytes 81.1 Mbits/sec
[ 4] 90.0-100.0 sec 94.0 MBytes 78.9 Mbits/sec
[ 4] 100.0-110.0 sec 92.8 MBytes 77.8 Mbits/sec
[ 4] 110.0-120.0 sec 92.2 MBytes 77.4 Mbits/sec
[ 4] 0.0-120.0 sec 1.10 GBytes 78.9 Mbits/sec
＝＝＝＝＝7.目前已經把兩台電力線網路裝到親戚家裡，速度測試如下＝＝＝＝＝
shinn~ iperf -c 192.168.3.50 -w 100M -t 120 -i 10
------------------------------------------------------------
Client connecting to 192.168.3.50, TCP port 5001
TCP window size: 128 KByte (WARNING: requested 100 MByte)
------------------------------------------------------------
[ 4] local 192.168.3.49 port 49202 connected with 192.168.3.50 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.0 sec 19.1 MBytes 16.0 Mbits/sec
[ 4] 10.0-20.0 sec 7.50 MBytes 6.29 Mbits/sec
[ 4] 20.0-30.0 sec 19.1 MBytes 16.0 Mbits/sec
[ 4] 30.0-40.0 sec 18.8 MBytes 15.7 Mbits/sec
[ 4] 40.0-50.0 sec 18.9 MBytes 15.8 Mbits/sec
[ 4] 50.0-60.0 sec 18.9 MBytes 15.8 Mbits/sec
[ 4] 60.0-70.0 sec 18.5 MBytes 15.5 Mbits/sec
[ 4] 70.0-80.0 sec 18.6 MBytes 15.6 Mbits/sec
[ 4] 80.0-90.0 sec 18.5 MBytes 15.5 Mbits/sec
[ 4] 90.0-100.0 sec 18.4 MBytes 15.4 Mbits/sec
[ 4] 100.0-110.0 sec 18.2 MBytes 15.3 Mbits/sec
[ 4] 110.0-120.0 sec 13.9 MBytes 11.6 Mbits/sec
[ 4] 0.0-120.1 sec 208 MBytes 14.6 Mbits/sec
這是我第一次使用電力線網路，覺得很好用，雖然平均 14.6 Mbits 速度不是很理想但是基本的上網已經夠用了。
在測試的過程中，我得到一個結論：電力線設備越接近越好
在書房的分享器是 RouterBoard 493G，在我家很好用，但是環境不一樣竟然差這麼多
另一個分享器是 RouterBoard 751G-2HnD 放在客廳，這個分享器的位置很重要，因為分享器支援 11n，在方圓十公尺內沒有干擾的情況下跑 50M 以上是完全沒有問題的，所以瓶頸就是卡在電力線設備。
這兩個電力線設備越接近越好，越靠近可以讓local 和 remote之間的速度越快，因為是在室內而且是平面，剩下的就讓 Wi-Fi去解決距離的問題
不過很可惜的是當我自己在測試的時候，上面的4，5，6測試，竟然沒辦法超過100Mbits的速度，這能是線路老舊的關係嗎？
另一個缺點，對其他人可能不算是缺點，那就是他只支援 110V
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