snmp - 清除 SNMP 陷阱

Question

我正在编写 SNMPv2 代理并需要发送陷阱。

陷阱发送正常，但需要在情况恢复正常时清除陷阱。目前 SNMP 接收器仍处于警报状态，直到手动清除。

我还发送了另一个 OID 吗？我是 SNMP 新手。

Answer 1

清除逻辑在陷阱接收器端实现。这里的代理任务是为此目的发送另一个 SNMP 陷阱。最常用的场景是 RFC1157 和 RFC1215 中定义的 linkDown/linkUp 陷阱:

 linkDown TRAP-TYPE
              ENTERPRISE  snmp
              VARIABLES   { ifIndex }
              DESCRIPTION
                          "A linkDown trap signifies that the sending
                          protocol entity recognizes a failure in one of
                          the communication links represented in the
                          agent's configuration."
              ::= 2

 linkUp TRAP-TYPE
              ENTERPRISE  snmp
              VARIABLES   { ifIndex }
              DESCRIPTION
                          "A linkUp trap signifies that the sending
                          protocol entity recognizes that one of the
                          communication links represented in the agent's
                          configuration has come up."
              ::= 3