SNMP MIB的snmpwalk故障排除

Question

我有一个来自供应商的MIB文件，用来询问一个特定的软件(在本例中，是业务关键)。

当我对请求执行snmptable时，我将MAGIC-MIB::queryRtTable: No entries作为响应，但当我使用wireshark观看时，我可以看到wireshark发送响应。

下面是在wireshark中发送响应的服务器：

对于MIB的建设，我一无所知，我希望下面是MIB的相关部分：

MAGIC-MIB DEFINITIONS ::= BEGIN

IMPORTS
        enterprises
                FROM RFC1155-SMI
        OBJECT-TYPE
                FROM RFC-1212  
        DisplayString
                FROM RFC1213-MIB;

magic         OBJECT IDENTIFIER ::= {enterprises 15687}
manage          OBJECT IDENTIFIER ::= {magic 2}
query           OBJECT IDENTIFIER ::= {magic 3}

queryRtTable OBJECT-TYPE
             SYNTAX  SEQUENCE OF QueryRtEntry
             ACCESS  not-accessible
             STATUS  mandatory
             DESCRIPTION
                     "The list of loaded enterprise servers"
             ::= { query 3 }

          queryRtEntry OBJECT-TYPE
              SYNTAX  QueryRtEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server entry"
              INDEX   { entServerEntryIndex }
              ::= { queryRtTable 1 }

          QueryRtEntry ::=
              SEQUENCE {
                              entServerEntryIndex
                      INTEGER,
                              entServerHost
                      DisplayString,
                              entServerPort
                      INTEGER,
                               openedApplication
                      DisplayString , 
                               entPriority
                      INTEGER,
                               runningThreads
                      INTEGER,
                               peakThreads
                      INTEGER,
                               runningContexts
                      INTEGER,
                               peakContexts
                      INTEGER,
                               requestsServed
                      INTEGER,
                               executionErrors
                      INTEGER
              }

          entServerEntryIndex OBJECT-TYPE
              SYNTAX  INTEGER (1..100000)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "A unique identifier for an enterprise server"
              ::= { queryRtEntry 1 }

          entServerHost OBJECT-TYPE
              SYNTAX  DisplayString
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise's host name"
              ::= { queryRtEntry 2 }

           entServerPort OBJECT-TYPE
              SYNTAX  INTEGER 
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server's port number"
              ::= { queryRtEntry 3 }

          openedApplication OBJECT-TYPE
              SYNTAX  DisplayString
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The application that is running on the enterprise server."
              ::= { queryRtEntry 4 }

           entPriority OBJECT-TYPE
              SYNTAX  INTEGER 
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The priority of the enterprise server"
              ::= { queryRtEntry 5 }

           runningThreads OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server's running thread counter"
              ::= { queryRtEntry 6 } 

           peakThreads OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server's peak thread counter"
              ::= { queryRtEntry 7 }

           runningContexts OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server's running context counter"
              ::= { queryRtEntry 8 } 

           peakContexts OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The enterprise server's peak context counter"
              ::= { queryRtEntry 9 }

           requestsServed OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of requests served"
              ::= { queryRtEntry 10 }

           executionErrors OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of execution errors"
              ::= { queryRtEntry 11 }   

有什么想法，我应该找出为什么snmptable不返回任何数据，即使数据是发送的？我猜这是MIB中的一个错误，但我真的不知道从哪里开始。

Answer 1

原来这是软件的SNMP代理中的一个bug，您请求哪个OID，它总是返回相同的一个。这意味着如果这是您想要收集的OID，很好-如果您想要任何其他数据，那就太糟糕了。