User guide

Building Your Canopy Network March 2005
Through Software Release 6.1
Issue 1 Page 213 of 425
Canopy System User Guide
Power Control
In Release 4.1 and later releases, select either
◦ Low to set the SM to operate at 18 dB less than full power to reduce the
possibility of self-interference with a nearby module.
◦ Normal to allow the SM to operate at full power.
CAUTION!
Selection of Low can cause the SM to drop an active RF link to an AP
that is relatively far from the low-power SM. If a link is dropped when
Power Control is set to Low, the link can be re-established by only
Ethernet access.
If you select Low and save the changes and reboot the AP, you should immediately open
the Link Test page and perform a link test.
Community String
Specify a control string that allows a NMS (Network Management Station) to access MIB
information about this SM. No spaces are allowed in this string. The default string is
Canopy.
The Community String value is clear text and is readable by a packet monitor.
Additional security derives from the configuration of the Accessing Subnet, Trap
Address, and Permission parameters.
Accessing Subnet
Specify the addresses that are allowed to send SNMP requests to this SM. The NMS has
an address that is among these addresses (this subnet). You must enter both
◦ The network IP address in the form xxx.xxx.xxx.xxx
◦ The CIDR (Classless Interdomain Routing) prefix length in the form /xx
For example
◦ the /16 in 198.32.0.0/16 specifies a subnet mask of 255.255.0.0 (the first 16 bits
in the address range are identical among all members of the subnet).
◦ 192.168.102.0 specifies that any device whose IP address is in the range
192.168.102.0 to 192.168.102.254 can send SNMP requests to the SM,
presuming that the device supplies the correct Community String value.
The default treatment is to allow all networks access (set to 0). For more information on
CIDR, execute an Internet search on “Classless Interdomain Routing.”