Snmp Traps; Hardware And Software Requirements And Limitations - ADTRAN NetVanta 1570 Series Configuration Manual

Hardware and Software Requirements and Limitations

SNMP Traps

Trap messages are sent by the SNMP agent to report network conditions or status updates from the network
device. The trap messages are received by the NMS to alert the administrator of current network conditions.
The alarm conditions and thresholds are defined in the ASE MIBs. When the alarms occur within the network
device, the traps are generated and sent out to the NMS. UDP port 162 is the default port used to listen for
SNMP traps. ASE supports the standard traps listed in
Trap notifications in SNMPv1 and SNMPv2c are sent once, and do not require an acknowledgment upon
receipt. With SNMPv3, a new form of notification type was introduced, called an inform message. Unlike a trap
sent with SNMPv1/v2c, an inform message requires a response be sent to the originating entity. If the
originator of the inform message notification does not receive the response before a specified timeout, the
originator can resend until an acknowledgment response is received, or a specified retry threshold is reached.
Sending inform messages require that the originator of the inform message know the user, engine ID of the
remote agent, SNMPv3 security parameters (level, authentication, and encryption), and belong to a SNMP
group that grants access to the information.
Table 3. ASE Supported Standard Traps
Name
alarmTrapStatus
authenticationFail-
ure
coldStart
entConfigChange
fallingAlarm
ipTrapInterfaces-
Link
linkDown
linkUp
lldpRem-
TablesChange
newRoot
psecTrapGlobals-
Main
psecTrapInterfaces
risingAlarm
topologyChange
warmStart
3. Hardware and Software Requirements and Limitations
SNMP features are supported on the NetVanta 1570 ASE products that are running ASE firmware 20.12-3 or
later as outlined in the NetVanta
8
Description
The status of an alarm trap has changed.
The SNMP agent has received a protocol message that is not properly authenticated.
The SNMP agent is reinitializing, creating an opening to edit its configuration.
The value of entLastChangeTime has changed. This trap can be utilized by an NMS to
trigger logical or physical entity table maintenance polls.
The monitored object has crossed the defined falling threshold.
The link status on the IP interface has changed.
The network interface has failed.
The network connection has been reestablished.
The LLDP neighbor table has changed.
A new spanning tree root has been elected.
The maximum number of MAC addresses exceeds 1024 addresses, as set in the Secu-
rity > Network > Port Security > Limit Control GUI menu.
A port security violation has occurred and the violation mode is shut down.
The monitored object has crossed the defined rising threshold.
A port in a bridge has changed from Learning to Forwarding or Forwarding to Block-
ing
The SNMP agent is reinitializing in a manner that prohibits configuration changes.
ASE Switch Feature Matrix
Table 3.
on the Adtran Support Community.
SNMP in the NetVanta 1570
6AMCCG0018-29A