Kami menggunakan pengaturan tautan radio 1Gbit / s berikut: Lokasi A:
- gateway internet dengan 1Gbits / s sym. serat
- sebagian besar server kami termasuk dhcp, dns, fileservers (smb), voip-server, exchange-server
- 55 klien / pengguna
- directional radio relay A (Lightpointe AireLink 60 SX) - 1Gbits / s
Lokasi B:
- satu server file (seseorang)
- 30 klien / pengguna
- radio directional relay B (Lightpointe AireLink 60 SX) - 1Gbits / s
Jarak antara lokasi A dan B adalah 177 meter. Kedua lokasi berbagi satu subnet: 192.168.0.0/24 untuk klien dan server, telepon VoIP ada di subnet 10.6.3.0/24 (dibagi dengan kedua lokasi juga). Jadi tidak ada perutean antara kedua lokasi dan tautan radio berfungsi sebagai jembatan.
Pengaturan relay radio directional A:
Link Status: UP
Mode: Data
RSSI, dBm: -46
RSSI Alarm Thrshld, dBm: -60
RSSI Alarm Clear, dBm: -50
RF Link: high
TX RF Band, GHz: 62.5
RX RF Band, GHz: 59.5
TX Power, dBm: -7
Distance: Very short
ACM: Enabled
Modulation: 16QAM 5/8
TX Lock: normal lock
RX Lock: normal lock
Modem Lock: locked
Pengaturan relay radio directional B:
Link Status: UP
Mode: Data
RSSI, dBm: -49
RSSI Alarm Thrshld, dBm: -60
RSSI Alarm Clear, dBm: -50
RF Link: low
TX RF Band, GHz: 59.5
RX RF Band, GHz: 62.5
TX Power, dBm: -4
Distance: Very short
ACM: Enabled
Modulation: 16QAM 5/8
TX Lock: normal lock
RX Lock: normal lock
Modem Lock: locked
RF Link RX Relai Radio Directional A: 0 RF Link RX Relai Radio Directional B: 0
Kami mengalami masalah berikut di lokasi B:
- Interupsi audio VoIP (sebagian besar hanya satu arah waktu masing-masing sekitar 3 detik)
- throughput seseorang terkadang turun menjadi 5 Mbit / dtk atau bahkan lebih rendah
- surat keluar (exchange server) terkadang sangat lambat
- koneksi internet lambat
Kecepatan transfer file turun ke nol dan membatalkan transfer file dengan 0x8007003B (lokasi A-> B):
Singkatnya: sepertinya ada sesuatu yang menyebabkan penurunan throughput besar-besaran, tetapi kita tidak tahu apa yang terjadi di sini. Kami memasang dua server "man-in-the-middle" dengan dua port Ethernet yang saling terhubung masing-masing untuk mengumpulkan beberapa data dengan ntopng
dan tshark
di kedua lokasi antara port data tautan radio dan port switch yang menghubungkannya ke jaringan lokal.
Tidak ada masalah mengakses server lokasi A dari klien lokasi A dan mengakses server lokasi B dari klien lokasi B.
- server.location-a = 192.168.0.149
- server.location-b = 192.168.0.242
iperf menunjukkan kecepatan data yang baik:
user@location-a:~$ iperf -c server.location-b -i 2 -t 20
------------------------------------------------------------
Client connecting to server.location-b, TCP port 5001
TCP window size: 512 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.0.149 port 63378 connected with 192.168.0.242 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 2.0 sec 198 MBytes 832 Mbits/sec
[ 3] 2.0- 4.0 sec 195 MBytes 817 Mbits/sec
[ 3] 4.0- 6.0 sec 198 MBytes 831 Mbits/sec
[ 3] 6.0- 8.0 sec 199 MBytes 836 Mbits/sec
[ 3] 8.0-10.0 sec 165 MBytes 692 Mbits/sec
[ 3] 10.0-12.0 sec 198 MBytes 829 Mbits/sec
[ 3] 12.0-14.0 sec 195 MBytes 817 Mbits/sec
[ 3] 14.0-16.0 sec 193 MBytes 810 Mbits/sec
[ 3] 16.0-18.0 sec 200 MBytes 838 Mbits/sec
[ 3] 18.0-20.0 sec 199 MBytes 833 Mbits/sec
[ 3] 0.0-20.0 sec 1.89 GBytes 814 Mbits/sec
kedua arah dengan --tradeoff (-r)
user@location-a:~$ iperf -c server.location-b -i 2 -t 20 -r
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 1.00 MByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to server.location-b, TCP port 5001
TCP window size: 512 KByte (default)
------------------------------------------------------------
[ 4] local 192.168.0.149 port 49535 connected with 192.168.0.242 port 5001
[ ID] Interval Transfer Bandwidth
[ 4] 0.0- 2.0 sec 191 MBytes 801 Mbits/sec
[ 4] 2.0- 4.0 sec 196 MBytes 824 Mbits/sec
[ 4] 4.0- 6.0 sec 196 MBytes 822 Mbits/sec
[ 4] 6.0- 8.0 sec 193 MBytes 809 Mbits/sec
[ 4] 8.0-10.0 sec 196 MBytes 821 Mbits/sec
[ 4] 10.0-12.0 sec 187 MBytes 783 Mbits/sec
[ 4] 12.0-14.0 sec 164 MBytes 690 Mbits/sec
[ 4] 14.0-16.0 sec 166 MBytes 697 Mbits/sec
[ 4] 16.0-18.0 sec 191 MBytes 803 Mbits/sec
[ 4] 18.0-20.0 sec 196 MBytes 820 Mbits/sec
[ 4] 0.0-20.0 sec 1.83 GBytes 787 Mbits/sec
[ 4] local 192.168.0.149 port 5001 connected with 192.168.0.242 port 45775
[ 4] 0.0- 2.0 sec 221 MBytes 928 Mbits/sec
[ 4] 2.0- 4.0 sec 221 MBytes 929 Mbits/sec
[ 4] 4.0- 6.0 sec 222 MBytes 933 Mbits/sec
[ 4] 6.0- 8.0 sec 222 MBytes 933 Mbits/sec
[ 4] 8.0-10.0 sec 222 MBytes 932 Mbits/sec
[ 4] 10.0-12.0 sec 188 MBytes 789 Mbits/sec
[ 4] 12.0-14.0 sec 223 MBytes 935 Mbits/sec
[ 4] 14.0-16.0 sec 222 MBytes 932 Mbits/sec
[ 4] 16.0-18.0 sec 223 MBytes 934 Mbits/sec
[ 4] 18.0-20.0 sec 222 MBytes 933 Mbits/sec
[ 4] 0.0-20.0 sec 2.14 GBytes 918 Mbits/sec
membalikkan server dan klien iperf:
user@location-b:~# iperf -c server.location-a -i 2 -t 20
------------------------------------------------------------
Client connecting to server.location-a, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.0.242 port 45778 connected with 192.168.0.149 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 2.0 sec 220 MBytes 921 Mbits/sec
[ 3] 2.0- 4.0 sec 218 MBytes 916 Mbits/sec
[ 3] 4.0- 6.0 sec 217 MBytes 910 Mbits/sec
[ 3] 6.0- 8.0 sec 221 MBytes 926 Mbits/sec
[ 3] 8.0-10.0 sec 213 MBytes 892 Mbits/sec
[ 3] 10.0-12.0 sec 188 MBytes 787 Mbits/sec
[ 3] 12.0-14.0 sec 218 MBytes 916 Mbits/sec
[ 3] 14.0-16.0 sec 218 MBytes 916 Mbits/sec
[ 3] 16.0-18.0 sec 219 MBytes 919 Mbits/sec
[ 3] 18.0-20.0 sec 223 MBytes 937 Mbits/sec
[ 3] 0.0-20.0 sec 2.10 GBytes 904 Mbits/sec
dualtest dengan -d:
user@location-b:~# iperf -c server.location-a -i 2 -t 10 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to server.location-a, TCP port 5001
TCP window size: 255 KByte (default)
------------------------------------------------------------
[ 5] local 192.168.0.242 port 45784 connected with 192.168.0.149 port 5001
[ 4] local 192.168.0.242 port 5001 connected with 192.168.0.149 port 52423
[ ID] Interval Transfer Bandwidth
[ 5] 0.0- 2.0 sec 210 MBytes 882 Mbits/sec
[ 4] 0.0- 2.0 sec 45.7 MBytes 192 Mbits/sec
[ 5] 2.0- 4.0 sec 172 MBytes 722 Mbits/sec
[ 4] 2.0- 4.0 sec 50.8 MBytes 213 Mbits/sec
[ 5] 4.0- 6.0 sec 205 MBytes 859 Mbits/sec
[ 4] 4.0- 6.0 sec 65.5 MBytes 275 Mbits/sec
[ 5] 6.0- 8.0 sec 215 MBytes 901 Mbits/sec
[ 4] 6.0- 8.0 sec 73.0 MBytes 306 Mbits/sec
[ 5] 8.0-10.0 sec 223 MBytes 934 Mbits/sec
[ 5] 0.0-10.0 sec 1.00 GBytes 860 Mbits/sec
[ 4] 8.0-10.0 sec 55.0 MBytes 231 Mbits/sec
[ 4] 0.0-10.0 sec 290 MBytes 243 Mbits/sec
iperf kedua arah saat memulai lokasi transfer file seseorang A -> B (tidak ada masalah memulai transfer file seseorang dari lokasi B -> A:
user@location-b:~# iperf -c server.location-a -i 1 -t 30 -r
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to server.location-a, TCP port 5001
TCP window size: 238 KByte (default)
------------------------------------------------------------
[ 5] local 192.168.0.242 port 45787 connected with 192.168.0.149 port 5001
[ ID] Interval Transfer Bandwidth
[ 5] 0.0- 1.0 sec 111 MBytes 934 Mbits/sec
[ 5] 1.0- 2.0 sec 109 MBytes 913 Mbits/sec
[ 5] 2.0- 3.0 sec 111 MBytes 928 Mbits/sec
[ 5] 3.0- 4.0 sec 111 MBytes 932 Mbits/sec
[ 5] 4.0- 5.0 sec 111 MBytes 928 Mbits/sec
[ 5] 5.0- 6.0 sec 101 MBytes 844 Mbits/sec
[ 5] 6.0- 7.0 sec 73.8 MBytes 619 Mbits/sec
[ 5] 7.0- 8.0 sec 111 MBytes 929 Mbits/sec
[ 5] 8.0- 9.0 sec 109 MBytes 916 Mbits/sec
[ 5] 9.0-10.0 sec 112 MBytes 938 Mbits/sec
[ 5] 10.0-11.0 sec 109 MBytes 918 Mbits/sec
[ 5] 11.0-12.0 sec 111 MBytes 933 Mbits/sec
[ 5] 12.0-13.0 sec 106 MBytes 891 Mbits/sec
[ 5] 13.0-14.0 sec 85.8 MBytes 719 Mbits/sec
[ 5] 14.0-15.0 sec 112 MBytes 935 Mbits/sec
[ 5] 15.0-16.0 sec 111 MBytes 934 Mbits/sec
[ 5] 16.0-17.0 sec 110 MBytes 924 Mbits/sec
[ 5] 17.0-18.0 sec 112 MBytes 937 Mbits/sec
[ 5] 18.0-19.0 sec 112 MBytes 940 Mbits/sec
[ 5] 19.0-20.0 sec 112 MBytes 935 Mbits/sec
[ 5] 20.0-21.0 sec 111 MBytes 928 Mbits/sec
[ 5] 21.0-22.0 sec 110 MBytes 923 Mbits/sec
[ 5] 22.0-23.0 sec 79.1 MBytes 664 Mbits/sec
[ 5] 23.0-24.0 sec 112 MBytes 937 Mbits/sec
[ 5] 24.0-25.0 sec 112 MBytes 936 Mbits/sec
[ 5] 25.0-26.0 sec 111 MBytes 934 Mbits/sec
[ 5] 26.0-27.0 sec 112 MBytes 937 Mbits/sec
[ 5] 27.0-28.0 sec 111 MBytes 928 Mbits/sec
[ 5] 28.0-29.0 sec 112 MBytes 938 Mbits/sec
[ 5] 29.0-30.0 sec 112 MBytes 941 Mbits/sec
[ 5] 0.0-30.0 sec 3.15 GBytes 901 Mbits/sec
[ 4] local 192.168.0.242 port 5001 connected with 192.168.0.149 port 52898
[ 4] 0.0- 1.0 sec 104 MBytes 872 Mbits/sec
[ 4] 1.0- 2.0 sec 103 MBytes 867 Mbits/sec
[ 4] 2.0- 3.0 sec 97.9 MBytes 822 Mbits/sec
[ 4] 3.0- 4.0 sec 95.9 MBytes 804 Mbits/sec
[ 4] 4.0- 5.0 sec 101 MBytes 851 Mbits/sec
[ 4] 5.0- 6.0 sec 102 MBytes 860 Mbits/sec
[ 4] 6.0- 7.0 sec 103 MBytes 867 Mbits/sec
[ 4] 7.0- 8.0 sec 103 MBytes 868 Mbits/sec
[ 4] 8.0- 9.0 sec 50.0 MBytes 419 Mbits/sec
[ 4] 9.0-10.0 sec 14.8 MBytes 124 Mbits/sec
[ 4] 10.0-11.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 11.0-12.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 12.0-13.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 13.0-14.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 14.0-15.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 15.0-16.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 16.0-17.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 17.0-18.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 18.0-19.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 19.0-20.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 20.0-21.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 21.0-22.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 22.0-23.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 23.0-24.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 24.0-25.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 25.0-26.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 26.0-27.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 27.0-28.0 sec 0.00 Bytes 0.00 bits/sec
[ 4] 0.0-28.9 sec 876 MBytes 255 Mbits/sec