13.3 Simple Network Management Protocol

Question 1

Describe Simple Network Management Protocol (SNMP)

Answer 1

gathers information from various network devices and uses it to provide system administrators with an overview of the health of the network. This allows problems to be identified and rectified before they cause more severe issues.

Question 2

Describe Poll

Answer 2

The SNMP Manager can poll (query) the SNMP Agents for specific information regarding their associated devices. These are referred to as get messages. The SNMP Manager consolidates this information and makes it available to the system administrator. Poll messages are sent on UDP port 161.

Question 3

Describe Trap

Answer 3

The SNMP Agent can communicate based on traps, which are thresholds for certain parameters. Whenever an agent detects that its associated device has exceeded one of these thresholds, it sends an SNMP trap message to the SNMP Manager (instead of waiting to be polled). Trap messages are sent on UDP port 162. Set messages set variables in SNMP.

Question 4

Router(config)#snmp-server engineID

Answer 4

Configures the Simple Network Management Protocol (SNMP) engine ID.

Question 5

Router(config)#snmp-server group [name] version [version#] [auth]

Answer 5

Configures a new Simple Network Management Protocol (SNMP) group.

Question 6

Router(config)#snmp-server user [username] [groupname] version [version#]

auth [auth-option] [auth-password] [auth] [encryption] [priv-password]

Answer 6

Configures a new user to a Simple Network Management Protocol (SNMP) group.

Question 7

Router(config)#snmp-server enable traps [keyword]

Router(config)#snmp-server enable traps cpu

Router(config)#snmp-server enable traps config

Router(config)#snmp-server enable traps snmp

Answer 7

Enables all Simple Network Management Protocol (SNMP) notification types that are available on the device.

Question 8

Router(config)#snmp-server host [a.b.c.d] traps version [version#] [auth]

Answer 8

Specifies the recipient of a Simple Network Management Protocol (SNMP) notification operation:

Question 9

Router(config)#snmp-server source-interface traps [type] [number]

Answer 9

Specifies the interface from which a Simple Network Management Protocol (SNMP) trap originates the informs or traps.