Device Configuration : System : Administration : SNMP
SNMP
Device Configuration > System > Administration > SNMP
Simple Network Management Protocol (SNMP) is used as the transport protocol for network management. Network management consists of a station or manager communicating with network elements such as hosts, routers, servers, or printers. The agent is the software on the network element (host, router, and printer) that runs the network management software. In other words, agent is the network element. The agent will store information in a Management Information Base (MIB). Management software will poll the various network elements/agents and get the information stored in them. The manager uses UDP port 161 to send requests to the agent and the agent uses UDP port 162 to send replies or messages to the manager. The manager can ask for data from the agent or set variable values in the agent. Agents can reply and report events.
SNMP collects information in two ways, if SNMP agent is installed on the devices:
The SNMP management station/manager will poll the network devices/agents.
Network devices/agents will send trap/alert to SNMP management station/Manager.
SNMP terms
Trap - An alert that is sent to a management station by agents.
Agent - A program at devices that can be set to watch for some event and send a trap message to a management station if the event occurs
SNMP community – An SNMP community is the group that devices and management stations running SNMP belong to. It helps define where information is sent. The community name is used to identify the group. A SNMP device or agent may belong to more than one SNMP community. It will not respond to requests from management stations that do not belong to one of its communities.
Use SNMP to configure agent, community and the SNMPv3 users. Device supports SNMPv1& SNMPv2c protocols. Agent configuration page is used to configure agent name, agent port and the contact person for the program. The community page is used for adding, managing and deleting the communities for protocols SNMPv1 and SNMPv2c. Use SNMPv3 user page to add, manage and delete v3 users. Apart from IPv4 Addresses, SNMP now supports IPv6 Addresses also.
Below are the screen elements with their description:
Agent Configuration
Use Agent configuration section to configure SNMP agents. The configuration details include name, description, location, contact person, agent port and manager port.
Below are the screen elements with their description:
Enable SNMP Agent
Select to enable SNMP Agent.
Name
Specify a name to identify the agent.
Description
Specify Agent Description.
Location
Specify the physical location of the device.
Contact Person
Specify the contact information for the person responsible for the maintenance of above specified device.
Agent Port
Specify the port which device should use to send traps.
Default - 161
Manager Port
Remote SNMP Management station/Manager uses this port to connect to the device.
Default - 161
Community
Community is a group of SNMP Managers. SNMP Agent may belong to one or more than one community. Agents do not respond to the requests from management stations that do not belong to its communities.
Each Community can support SNMPv1, SNMPv2c or both. Device sends traps to all the communities. You must specify a trap version for each community.
The section provides list of all the communities added and you can sort the list based on community name. The section also provides the option to add a new community, update the parameters of the existing community, or delete the community.
v3 User
SNMP version 3 has the capability of using authentication. Only the authenticated user can request the information.
The section displays the list of all the v3 users. The section also provides the option to add a new v3 user, update the password of the user, or delete the user.