User manual

VOLKTEK NSH-5509 MANAGED 8-PORT 10/100 + 1-PORT 100-FX SWITCH
Here the user can alter per-port configuration to detect abnormal traffic (like broadcast
traffic) and temporarily or permanently block ports that detect such traffic.
Use this page to configure all selected ports’ reaction to abnormal traffic.
If, for instance, the Threshold is 5000 p/s and the Detection Duration is 60 seconds, it
means that all enabled ports will be blocked if a transmission load of more than 5000 p/s
is experienced on these ports for an uninterrupted period of 60 seconds.
If the Block Duration is set at 600 seconds, these ports will be unblocked again after 600
seconds, but if “Block Port Permanently” is enabled, the Block Duration (600 seconds)
will not apply and the port will be blocked forever or until the manager unblocks it by
accessing the Port Settings page.
Change the above variables according to your requirements.
Enable all ports that will partake in Abnormal Traffic Detection according to the above-
mentioned parameters. Click “Apply” to let changes take effect.
8.19 Firmware Download (Upgrade System)
Use the HTTP Download menu to load software updates into the permanent flash ROM
in the switch. The download file should be in a binary format, otherwise, the agent will
not accept it. The success of the download operation depends on the quality of the
network connection. After downloading the new software, the agent will automatically
restart itself. See the following figure and table:
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