Cisco AP541N Dual-band Single-radio Access Point Administration ...

5SNMPConfiguring SNMP on the Access PointTable 25FieldSNMP Settings (Continued)Restrict the source ofSNMP requests toonly the designatedhosts or subnetsHostname, address orsubnet of NetworkManagement SystemDescriptionYou can restrict the source of permitted SNMP requests.To restrict the source of permitted SNMP requests, clickEnabled.To permit any source submitting an SNMP request, clickDisabled.Specify the IPv4 DNS hostname or subnet of themachines that can execute get and set requests to themanaged devices.As with community names, this provides a level ofsecurity on SNMP settings. The SNMP agent only acceptsrequests from the hostname or subnet specified here.To specify a subnet, enter one or more subnetworkaddress ranges in the form address/mask_lengthwhere address is an IP address and mask_length is thenumber of mask bits. Both formats address/mask andaddress/mask_length are supported. Individual hostscan be provided for this, i.e. I.P Address or Hostname. Forexample, if you enter a range of 192.168.1.0/24 thisspecifies a subnetwork with address 192.168.1.0 anda subnet mask of 255.255.255.0.The address range is used to specify the subnet of thedesignated NMS. Only machines with IP addresses in thisrange are permitted to execute get and set requests onthe managed device. Given the example above, themachines with addresses from 192.168.1.1 through192.168.1.254 can execute SNMP commands on thedevice. (The address identified by suffix .0 in asubnetwork range is always reserved for the subnetaddress, and the address identified by .255 in the rangeis always reserved for the broadcast address).As another example, if you enter a range of10.10.1.128/25, machines with IP addresses from10.10.1.129 through 10.10.1.254 can executeSNMP requests on managed devices. In this example,10.10.1.128 is the network address and 10.10.1.255is the broadcast address. 126 addresses are designated.107 Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide