Cisco AP541N-A-K9 Administration Guide - Page 110

SNMP Settings Continued, Management System

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5 107 SNMP Configuring SNMP on the Access Point Table 25 SNMP Settings (Continued) Field Description Restrict the source of You can restrict the source of permitted SNMP requests. SNMP requests to only the designated hosts or subnets To restrict the source of permitted SNMP requests, click Enabled. To permit any source submitting an SNMP request, click Disabled. Hostname, address or Specify the IPv4 DNS hostname or subnet of the subnet of Network machines that can execute get and set requests to the Management System managed devices. As with community names, this provides a level of security on SNMP settings. The SNMP agent only accepts requests from the hostname or subnet specified here. To specify a subnet, enter one or more subnetwork address ranges in the form address/mask_length where address is an IP address and mask_length is the number of mask bits. Both formats address/mask and address/mask_length are supported. Individual hosts can be provided for this, i.e. I.P Address or Hostname. For example, if you enter a range of 192.168.1.0/24 this specifies a subnetwork with address 192.168.1.0 and a subnet mask of 255.255.255.0. The address range is used to specify the subnet of the designated NMS. Only machines with IP addresses in this range are permitted to execute get and set requests on the managed device. Given the example above, the machines with addresses from 192.168.1.1 through 192.168.1.254 can execute SNMP commands on the device. (The address identified by suffix .0 in a subnetwork range is always reserved for the subnet address, and the address identified by .255 in the range is always reserved for the broadcast address). As another example, if you enter a range of 10.10.1.128/25, machines with IP addresses from 10.10.1.129 through 10.10.1.254 can execute SNMP requests on managed devices. In this example, 10.10.1.128 is the network address and 10.10.1.255 is the broadcast address. 126 addresses are designated. Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide

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SNMP
Configuring SNMP on the Access Point
107
Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide
5
Restrict the source of
SNMP requests to
only the designated
hosts or subnets
You can restrict the source of permitted SNMP requests.
To restrict the source of permitted SNMP requests, click
Enabled
.
To permit any source submitting an SNMP request, click
Disabled
.
Hostname, address or
subnet of Network
Management System
Specify the IPv4 DNS hostname or subnet of the
machines that can execute
get
and
set
requests to the
managed devices.
As with community names, this provides a level of
security on SNMP settings. The SNMP agent only accepts
requests from the hostname or subnet specified here.
To specify a subnet, enter one or more subnetwork
address ranges in the form
address/mask_length
where
address
is an IP address and
mask_length
is the
number of mask bits. Both formats
address/mask
and
address/mask_length
are supported. Individual hosts
can be provided for this, i.e. I.P Address or Hostname. For
example, if you enter a range of
192.168.1.0/24
this
specifies a subnetwork with address
192.168.1.0
and
a subnet mask of
255.255.255.0
.
The address range is used to specify the subnet of the
designated NMS. Only machines with IP addresses in this
range are permitted to execute get and set requests on
the managed device. Given the example above, the
machines with addresses from
192.168.1.1
through
192.168.1.254
can execute SNMP commands on the
device. (The address identified by suffix .0 in a
subnetwork range is always reserved for the subnet
address, and the address identified by
.255
in the range
is always reserved for the broadcast address).
As another example, if you enter a range of
10.10.1.128/25
, machines with IP addresses from
10.10.1.129
through
10.10.1.254
can execute
SNMP requests on managed devices. In this example,
10.10.1.128
is the network address and
10.10.1.255
is the broadcast address. 126 addresses are designated.
Table 25
SNMP Settings (Continued)
Field
Description