415U Condor-long-range wireless I/O and gateway
User Manual MAN_415U-C
Effective September 2022
Beacon Interval This setting applies to Access Point (Manual mode),
Base (ProMesh and Fixed Link modes), Mesh Node
(ProMesh) and Repeater (Fixed Link) stations. These stations regularly send a special beacon message to identify themselves and allow other devices to connect to them.
You can change the interval between beacons with this setting. You may need to increase this interval if you have a very large number of devices in close proximity which are all sending beacons.
Client Inactivity
Time (AP Only)
Management
Frame Attempts
Management
Frame Response
Timeout
Missed Beacons
Before Link Loss
(Client Only)
ProMesh Mesh Node stations only send beacons when they are acting as a repeater for another station.
Thistimeout determines how long the upstream device will maintain a link without receiving any message from the downstream device. When this time expires, the downstream device is removd from the connectivity list.
Management frames co-ordinate link establishment and maintenance between radio devices. This is the number of times that management frames are re-transmitted if no response is received.
The timeout waiting for a response to a management frame before re-transmitting the message.
This timeout determines how long the downstream device will maintain a linke without receiving any beacon message from the upstream device (AP). Multiply this by the Beacon Time to find the timeout.
Performance and Contention Settings
These settings control the way the radio accesses the shared radio channel, and how contention for the radio channel between multiple devices is handled.
RTS Threshold his value sets the messages size where RTS contention control is activated. RTS contention control sends a short message to reserve the radio channel before sending the longer message. If you have a system with large messages and where remote stations cannot receive each other’s messages, then setting this to a value of 100 may help reduce contention.
Slot Time This time is the step-size in the radio random holdoff used inthe channel access protocol.
Contention
Window
This is the maximum number of slots in the radio random holdoff algorithm.
Holdoff Time This is the fixed holdoff used in the radio channel access protocol.
Compression and Statistics Settings
Data
Compression
Enable Radio
Statistics
Compress data as it is trasferred over the radio channel.
Make radio statistics available in the on-board registers
(30421-30490).
Roaming Settings
These setting scontrol how the radios decide to roam between upstream devices. These settings apply to both ProMesh and Fixed Links with Roaming networking modes.
Roam Scan
Thresold
Roam
Changeover
Margin.
Connection
Threshold
The radio won’t start looking for alternative upstream device until the RSSI reaches this level
The radio won’t change to another upstream unless it is at least this amount better than the current connection.
This settin applies to ProMesh mode. The MeshNode won’t connect to a multi-hop path unless the path’s adjusted RSSI is at least this good.
Maximum
Bridged
Devices
When the network topology changes due to roaming or ProMesh changes, the internal MAC routing tables throughout the netwrok need to be refreshed. This is done by the transmission of a Gratuitous ARP message. If you have a large number of host device s connected to the ethernet on one radio, you should adjust this setting.
Traffic Control
Traffic Control applies intelligent filters to Ethernet network traffic reaching the radio network. Host protocols that are designed for high speed network can sometimes re-try messages before the original message has been delivered, and can sometimes send out multiple requests in a very short period. Two protocols that will typically impact radio traffic are ARP and
TCP (during connection establishment).These settings limit the number of outstanding requests (ARP and TCP) that can be active at one time. This limits the traffic reaching the radio network.
Rate limiting is achieved by setting an Interval and a maximum number of messages to transmit during the interval. If there are a large number of remote devices in your system, it may be advisable to set the number and the interval both higher.
ARP Request
Interval
Max ARPs to Tx per Interval
The Interval for ARP Requests. 0 to disable ARP request rate-limit. Typical 10 sec
The maximum number of ARP requests to transmit during the intervale. Typical 20 (per 10 secs).
TCP SYN Interval The Interval for TCP SYN Requests. 0 to disable TCP SYN rate-limit. Typical 10 sec
TCP SYN Interval The maximum number of TCP SYN to transmit during the intervale. Typical 20 (per 10 secs).
Drop Buffered
Duplicate Arps
Drop Buffered
Duplicate TCP
Frames
Radio Queue
Length
Radio Tx Retry
Attempts
Check this to drop ARP messages that are duplicates of message tat are already in the radio Tx Queue.
Check this to drop ARP messages that are duplicates of messages that are already in the radio Tx Queue.
The maximum number of messages that can be buffered waiting to be transmitted on the radio.
For Fixed data rates, the number of times to send a transmission looking for an acknowledgement. (For automatic data rate, the Tx Retry attempts are managed by the rate control algorithm).
Repeaters
Repeaters setting allows you to configure arbitrary radio networks between different devices. Repeaters configuration is only available to devices configured as Access Point (Manual mode).
The Repeaters configuration is managed automatically in ProMesh mode and in Fixed Link mode.
The 415U networking architecture allows you to configure an arbitary set of
Virtual Client and Virutal Access Point devices. This allows you to set up any network structure needed.
Use the “Add Entry”, button to add a row to the repeaters table. Once this is complete, select the following:
Connection
Mode
SSID
Encryption
Passphrase
Select the desired connection mode This is either “Client/
Station (Uplink)”. or “Access Point (Downlink)”. This creates a virtual network endpoint, which you can use to connect to another Endpoint with matching SSID.
This is the SSID of the Access Point you want to connect to. If you’re connecting to a Fixed links network, this is the device name of the Repeater or Base that you want to connect to. For Roaming in a fixed links network, and for
ProMesh connection, this is the System Name.
This is set to match the encryption used in the remote endpoint you want to connect to.
This is set to match the encryption passphrase in the remote endpoint you want to connect to.
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