throughput turun mendekati nol menggunakan directional radio relay

10

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): contoh 1: kecepatan transfer file turun menjadi nol dan membatalkan transfer file contoh 2: laju transfer file turun menjadi nol dan membatalkan transfer file

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 ntopngdan tsharkdi 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
networking local-area-network server-message-block wireless-bridge Stephan
sumber
3
Anda memiliki sedikit data yang mendeteksi bahwa masalah ini terjadi, tetapi tidak ada yang mengungkapkan mengapa hal itu terjadi. Sudahkah Anda mengumpulkan dump lalu lintas dari antarmuka nirkabel ini sementara masalahnya muncul sendiri? Setiap anomali di sana akan berpotensi membantu. Saya juga tidak melihat data langsung dari AP sendiri selama hampir-padam ini. Itu akan membantu untuk menentukan apakah ada semacam sinyal memudar di antara keduanya. Mungkin sebuah pabrik kertas mengeluarkan gas kentut yang sudah dijadwalkan.
Spooler
1
Apakah ada hambatan fisik di antara antena? Merpati?
Nikolai
Dan untuk menambah "pengaruh fisik": Adakah kemungkinan antena dapat berayun keluar dari arah yang diperlukan oleh angin, getaran, dll.? Adakah pengirim lain pada frekuensi ini yang mungkin hidup dari waktu ke waktu, dan menyebabkan gangguan? Mungkin perlu mencatat saat-saat ketika throughput Anda turun, dan menghubungkannya dengan kemungkinan pengaruh.
dirkt

Jawaban:

1

refleksi multi-jalur? mencoba untuk mengimbangi pasangan dengan sedikit derajat, saya tidak tahu jenis modulasi apa yang digunakan tetapi saya membayangkan bahwa dalam gaya FHSS Anda dapat memiliki banyak masalah tanpa peringatan dari perangkat keras

Vincent Bellazzi
sumber