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Simple Network Management Protocol (SNMP) is a protocol used for network management, troubleshooting, and maintenance. SNMP records, stores, and shares information with the help of a two-key software: a Network Management System (NMS) that runs on manager devices and an agent that runs on managed devices. The WAP361 and WAP150 support SNMPv2c and SNMPv3.
SNMPv2c is similar to the original SNMP through improved security and error handling support. This improvement includes expanded error codes that distinguish different types of errors; all types of errors are reported through a single error code in SNMPv1.
SNMPv3 improved the second released version by providing new security features such as Authentication, Privacy, Authorization, and Access control.
This article explains how to configure the general SNMP settings on the WAP361 and WAP150.
Step 1. Log in to the access point web-based utility and choose SNMP > General.
Step 2. In the Global Settings area, check the Enable checkbox to enable SNMP.
Step 3. Enter the UDP port number in the UDP Port field. The SNMP agent checks this port for access requests. The default port is 161.
Timesaver: If you do not need SNMPv2 configuration, skip this step, and jump to Step 11.
Step 4. Enter a read-only community name in the Read-only Community field with alphanumeric characters ranging from 1 to 256. The community name is a user-defined name that acts as a simple authentication mechanism or password to restrict the devices on the network that can request data from the SNMP agent. The community string sent by the sender in the request packet has to match the community string on the agent device. The default string for read-only is cisco_public.
Note: The read-only password gives authority to retrieve information only.
Step 5. Enter a read-write community name in the Read-write Community field with alphanumeric characters ranging from 1 to 256 for permitted SNMP set operations. Only requests from the devices that identify themselves with this community name are accepted. The default is cisco_private. This is a password that allows both to retrieve information from the agent and to modify settings on that agent device.
Note: It is recommended to change both the passwords to a user-defined password in order to avoid security threats.
Step 6. Choose between All or User Defined in the Management Station radio button to choose a management station preference. The management station monitors and updates the values in the Management Information Base (MIB).
Note: The option selected as an example in the image below is User Defined.
All — Allows all the stations in the network to access the Wireless Access Point (WAP) through SNMP as a management station. If you choose this, proceed to Step 8.
User Defined — Limits the access to a specific station or group of stations.
Step 7. Enter the IPv4 or IPv6 addresses, DNS hostname, or subnet of the NMS that can execute, get, and set the requests to the managed devices in the NMSIPv4 Address/Name and NMS IPv6 Address/Name fields, respectively. An NMS refers to the management stations that execute applications that monitor and control managed devices.
Note: The NMS IPv4 address 192.168.1.241 is used as an example in the image below.
Step 8. Enter the global community name associated with SNMP traps in the Trap Community field. The valid range is from 1 to 60 alphanumeric and special characters. In the image below, TrapCommunity is used as an example.
Note: Traps are notifications from agent to manager containing agent information. Traps sent from the device use the string entered as a community name.
Step 9. In the Trap Destination Table area, check the box and choose between IPv4 and IPv6 in the Host IP Address Type drop-down list.
Note: In the example below, the first two boxes were checked with both IPv4 set as the Host IP Address Type.
Step 10. In the Hostname/IP Address field, enter the host names or IP addresses of up to three hosts to receive SNMP traps.
Note: In the image below, an IP address and a hostname were entered as examples.
Step 11. Click Save.
You have successfully configured the SNMP General Settings on your WAP.
For more information on General Settings Simple Network Management Protocol, click on the following links: