Web Page Reference
102
Hopping Margin:
Spectrum Management uses this margin when making a channel hop decision.
The target channel has to have an interference level 3 dB (default) better than the current active
channel.
Hopping Period (not configurable):
The Spectrum Management algorithm evaluates the met-
rics every ‘Hopping Period’ seconds (180 seconds by default) looking for a channel with lower levels
of interference. If a better channel is located, Spectrum Management performs an automated chan-
nel hop. If SNMP or SMTP alerts are enabled an SNMP TRAP or an email alert is sent warning
the system administrator of the channel change.
Hopping Counter:
is used to record the number of channel hops. The number in the “(+)”
brackets indicates the number of channel changes since the last screen refresh.
Interference Threshold:
Spectrum Management uses the interference threshold to perform in-
stantaneous channel hops. If the measured interference on a channel exceeds the specified threshold,
then iDFS will instruct the wireless to immediately move to a better channel. If a better channel
cannot be found the 500 Series Bridge will continue to use the current active channel. (Default -85
dBm)
Asymmetric DFS:
The default configuration of symmetric operation constrains the link to op-
erate symmetrically, using the same transmit and receive channels. When in symmetric mode the
slave unit will always follow the master. If the master moves to a new channel the slave will hop
to the same channel. When the Point-to-Point link is configured as an asymmetric link both the
master and slave are free to select the best channel from their own set of local interference metrics.
Channel Bandwidth (not configurable):
shows the value of the variable channel bandwidth
selected.
8.3.7.6
Barring Channels
Channels can only be barred / unbarred by the system administrator from the master Spectrum
Management web page. The barring / unbarring operations are disabled on the slave web page. If
an attempt to bar / unbar a channel is made at the slave, a warning dialog is generated.
Barring/Unbarring of channels is performed by clicking the appropriate channel on the local or
peer channel spectrum plots on the master web page. Each bar / unbar attempt will be proceeded
by a confirmation dialog. It should be noted that the channel bar will take effect immediately and
is not related to the measurement quantization period.
8.3.7.7
Master and Slave Channel Spectrum Graphics
Spectrum Management presents its computed statistical measurements in a graphical display on
both the master and slave Spectrum Management web page.
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Страница 1: ...PTP 500 Series User Guide phn 1115 000v001 ...
Страница 74: ...Web Page Reference 74 Figure 37 Save Configuration File Screen ...
Страница 100: ...Web Page Reference 100 Figure 59 Spectrum Management as seen from the Master ...
Страница 108: ...Web Page Reference 108 Figure 66 Spectrum Management Master Screen With Operational Restrictions ...
Страница 112: ...Web Page Reference 112 Figure 68 Remote Management ...
Страница 165: ...Data Rate Calculations 165 Figure 112 QPSK 0 50 Single Payload Figure 113 QPSK 0 75 Single Payload ...
Страница 166: ...Data Rate Calculations 166 Figure 114 16 QAM 0 50 Single Payload Figure 115 16 QAM 0 75 Single Payload ...
Страница 167: ...Data Rate Calculations 167 Figure 116 64 QAM 0 67 Single Payload Figure 117 64 QAM 0 83 Single Payload ...
Страница 168: ...Data Rate Calculations 168 Figure 118 256 QAM 0 75 Single Payload Figure 119 QPSK 0 50 Dual Payload ...
Страница 169: ...Data Rate Calculations 169 Figure 120 QPSK 0 75 Dual Payload Figure 121 16 QAM 0 50 Dual Payload ...
Страница 170: ...Data Rate Calculations 170 Figure 122 16 QAM 0 75 Dual Payload Figure 123 64 QAM 0 67 Dual Payload ...
Страница 171: ...Data Rate Calculations 171 Figure 124 64 QAM 0 83 Dual Payload Figure 125 256 QAM 0 75 Dual Payload ...
Страница 197: ...Glossary 197 UTP Unshielded Twisted Pair VLAN Virtual Local Area Network ...
