Specifications

Configuration MP.11 5054-R/2454-R Installation and Management
Network Parameters
67
NOTE: You must know the data rate required for the applications running and you must ensure (during network
deployment) that the ranges and RF links can support the necessary data rate. You also must set the default
DDRS data rate at the capacity necessary for the application so that it connects to the next Base Station at the
required capacity if roaming occurs. Set the “Default DDRS Data Rate” (ddrsdefdatarate) to a greater value (24,
36, 48 or 54 Mbps, for example) for applications requiring session persistence when roaming occurs.
Configuring Roaming
Click Configure > Network > Roaming to configure Roaming. The screen differs depending on whether the unit is
configured as a BSU or as an SU.
BSU Screen
Enable or disable the Roaming feature by selecting the Enable Roaming Status check box. The default value is
disabled (clear). If you enable roaming, you may set the Announcement Period (from 25 to 100 ms, default is 100 ms).
On this screen you may also enable or disable the Multi-Frame Bursting (default value is enabled).
An SU scans all available channels for a given bandwidth during roaming. In order to reduce the number of channels an
SU has to scan and thus decrease the roaming time, a channel priority list that tells the SU what channels to scan is
implemented. Each channel in the channel priority list is specified with its corresponding bandwidth and the priority with
which it should be scanned, either “Active” (standard priority), “Active High” (high priority), or “Inactive”.
An SU will scan all channels indicated as “Active” during roaming. However, it will scan active channels indicated as
“High Priority” before scanning active channels indicated as standard priority. Channels that are not going to be used in
the wireless network should be configured as “Inactive” so that the SU can skip over those channels during scanning
saving this way time.
A BSU broadcasts the channel priority list to all valid authenticated SUs in its sector. It re-broadcasts the channel priority
list to all SUs every time the list is updated on the BSU.
Click Edit Table Entries to make changes; enter your changes and click OK.