SNMP的MIB文件的语法简述
2015-11-18 19:05
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转自：http://blog.csdn.net/shanzhizi/article/details/15340305
XXX-TEST-MIB DEFINITIONS ::= BEGIN
……
……
END
注：分号，英文全角分号。
在一个MIB file中，所有引用到的数据类型均应有引用。
如：
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
在ASN.1中，对象标识符类型描述对象的抽象信息，MIB树中的每一个标号是用对象标识符描述的。
例如：
xxx OBJECT IDENTIFIER ::= {enterprises 22566}
xxx是一个子树支，它定义在enterprises树支下，“22566” 是子树xxx在父树enterprises下的一个唯一对象标识符。
其编译后的视图为：
在每一个树支下，可以定义被管理资源的管理对象，其中一类是标量节点（直观地看象树叶的节点）。利用OBJECT-TYPE定义。其定义的句法如下：
objectname OBJECT-TYPE
SYNTAX (syntax)
MAX-ACCESS (access)
STATUS (status)
DESCRIPTION (description)
::= { ( parent ) ( number )
例如：
Xxxx OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"
"
::= { xxxx 1 }
其声明如下：
tablename OBJECT-TYPE
SYNTAX SEQUENCE OF Entrytype
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION (description)
:: ={ (parent) (number)}
entryname OBJECT-TYPE
SYNTAX Entrytype
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION description
INDEX { index list }
:: ={ (tablename) 1}
(Entrytype) :: =
SEQUENCE {
(column1) (column1type),
(column2) (column1type),
( columnN) (columnNtype) }
源码如下：
XXX-TEST-MIB DEFINITIONS ::= BEGIN
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
xxx OBJECT IDENTIFIER ::= {enterprises 22566}
zkClassInfoTable OBJECT IDENTIFIER ::= {xxx 1}
zkClassInfoTable2 OBJECT IDENTIFIER ::= {xxx 2}
zkClassInfoTable OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 1}
zkClassInfoEntry OBJECT-TYPE
SYNTAX ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable 1}
ZkClassInfoEntry ::= SEQUENCE {
zkClassInfoIndex Integer32,
zkClassInfoSex Integer32,
zkClassInfoAge Integer32,
zkCLassInfoName DisplayString,
zkClassInfoAddress DisplayString
}
zkClassInfoIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 1}
zkClassInfoSex OBJECT-TYPE
SYNTAX Integer32 {
man(1),
woman(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 2}
zkClassInfoAge OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 3}
zkCLassInfoName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 4}
zkClassInfoAddress OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 5}
zkClassInfoTable2 OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 2}
zkClassInfoEntry2 OBJECT-TYPE
SYNTAX ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable2 1}
ZkClassInfoEntry2 ::= SEQUENCE {
zkClassInfoSex2 Integer32,
zkClassInfoAge2 Integer32,
zkCLassInfoName2 DisplayString,
zkClassInfoAddress2 DisplayString
}
zkClassInfoSex2 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry2 1}
END
XXX-TEST_MIB DEFINITIONS ::= BEGIN
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
xxx OBJECT IDENTIFIER ::= {enterprises 40256}
zkClassInfoTable OBJECT IDENTIFIER ::= {xxx 1}
zkClassInfoTable2 OBJECT IDENTIFIER ::= {xxx 2}
zkClassInfoTable OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 1}
zkClassInfoEntry OBJECT-TYPE
SYNTAX ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable 1}
ZkClassInfoEntry ::= SEQUENCE {
zkClassInfoIndex Integer32,
zkClassInfoSex Integer32,
zkClassInfoAge Integer32,
zkCLassInfoName DisplayString,
zkClassInfoAddress DisplayString
}
zkClassInfoIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 1}
zkClassInfoSex OBJECT-TYPE
SYNTAX Integer32 {
man(1),
woman(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 2}
zkClassInfoAge OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 3}
zkCLassInfoName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 4}
zkClassInfoAddress OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 5}
zkClassInfoTable2 OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 2}
zkClassInfoEntry2 OBJECT-TYPE
SYNTAX ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable2 1}
ZkClassInfoEntry2 ::= SEQUENCE {
zkClassInfoSex2 Integer32,
zkClassInfoAge2 Integer32,
zkCLassInfoName2 DisplayString,
zkClassInfoAddress2 DisplayString
}
zkClassInfoSex2 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry2 1}
END
MIB file的开始和结束
所有的MIB file的都以DEFINITIONS ::= BEGIN关键字开始，以END结束。我们所有添加的节点均应在此之间。XXX-TEST-MIB DEFINITIONS ::= BEGIN
……
……
END
模块引用区域
在MIB开始关键字后，即是模块引用区域，利用IMPORTS标识，所有的模块引用及群组的引用均使用FROM关键字说明其出处,引用使用分号（;）结束。注：分号，英文全角分号。
在一个MIB file中，所有引用到的数据类型均应有引用。
如：
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
MIB核心部分（对象标识，标量节点，表格对象的定义）
对象标识
对象标识用关键字OBJECT IDENTIFIER声明，它的主要功能是用来将一类功能的对象结合起来。展开或折叠此对象标识即可展开或折叠此类功能的所有对象。在ASN.1中，对象标识符类型描述对象的抽象信息，MIB树中的每一个标号是用对象标识符描述的。
例如：
xxx OBJECT IDENTIFIER ::= {enterprises 22566}
xxx是一个子树支，它定义在enterprises树支下，“22566” 是子树xxx在父树enterprises下的一个唯一对象标识符。
其编译后的视图为：
标量节点
在每一个树支下，可以定义被管理资源的管理对象，其中一类是标量节点（直观地看象树叶的节点）。利用OBJECT-TYPE定义。其定义的句法如下：objectname OBJECT-TYPE
SYNTAX (syntax)
MAX-ACCESS (access)
STATUS (status)
DESCRIPTION (description)
::= { ( parent ) ( number )
| 关键字 | 说明 | 备注 |
| objectname | 被管理对象的名字 | 必须以小写字母开头 |
| OBJECT-TYPE | 每一个叶子对象所必须的关键字 | |
| syntax | 被管理对象类型的关键字 | Counter(计数) Gauge(标准) DisplayString(显示字符串) Interger(整数) TimeTicks（时间戳） NetworkAddress(网络地址) IpAddress（Ipv4地址） |
| access | 该节点支持的访问方式 | read-only(只读) read-write(读写) read-create(读和创建) no-accessible(不可访问) |
| status | 该节点的状态 | current (当前的) deprecated (反对的) obsolete(废弃的) |
| description | 对被管理对象的功能、特征等进行描述的关键字 |
Xxxx OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"
"
::= { xxxx 1 }
表类型
表类型是一个特殊类型的声明，表内声明的对象称为列对象，表对象可以看作是一些标量对象的集合。利用SEQUENCE和SEQUENCE OF定义表格和表格中的行， 通常来说，表格对象的名字后面加有后缀Table，行对象的名字后面加有后缀Entry。其声明如下：
tablename OBJECT-TYPE
SYNTAX SEQUENCE OF Entrytype
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION (description)
:: ={ (parent) (number)}
entryname OBJECT-TYPE
SYNTAX Entrytype
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION description
INDEX { index list }
:: ={ (tablename) 1}
(Entrytype) :: =
SEQUENCE {
(column1) (column1type),
(column2) (column1type),
( columnN) (columnNtype) }
| 关键字 | 说明 | 备注 |
| tablename | 表格名 | xxxxTable首字母小写 |
| Entrytype | 表对象名 | XxxxEntry首字母大写 |
| not-accessible | 访问方式 | 此处必须是not-accessible |
| entryname | 行名 | 和XxxxEntry名相同，首字母小写xxxxEntry |
| description | 描述信息 |
XXX-TEST-MIB DEFINITIONS ::= BEGIN
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
xxx OBJECT IDENTIFIER ::= {enterprises 22566}
zkClassInfoTable OBJECT IDENTIFIER ::= {xxx 1}
zkClassInfoTable2 OBJECT IDENTIFIER ::= {xxx 2}
zkClassInfoTable OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 1}
zkClassInfoEntry OBJECT-TYPE
SYNTAX ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable 1}
ZkClassInfoEntry ::= SEQUENCE {
zkClassInfoIndex Integer32,
zkClassInfoSex Integer32,
zkClassInfoAge Integer32,
zkCLassInfoName DisplayString,
zkClassInfoAddress DisplayString
}
zkClassInfoIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 1}
zkClassInfoSex OBJECT-TYPE
SYNTAX Integer32 {
man(1),
woman(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 2}
zkClassInfoAge OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 3}
zkCLassInfoName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 4}
zkClassInfoAddress OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 5}
zkClassInfoTable2 OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 2}
zkClassInfoEntry2 OBJECT-TYPE
SYNTAX ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable2 1}
ZkClassInfoEntry2 ::= SEQUENCE {
zkClassInfoSex2 Integer32,
zkClassInfoAge2 Integer32,
zkCLassInfoName2 DisplayString,
zkClassInfoAddress2 DisplayString
}
zkClassInfoSex2 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry2 1}
END
XXX-TEST_MIB DEFINITIONS ::= BEGIN
IMPORTS
enterprises
FROM RFC1155-SMI
Integer32
FROM SNMPv2-SMI
DisplayString
FROM SNMPv2-TC;
xxx OBJECT IDENTIFIER ::= {enterprises 40256}
zkClassInfoTable OBJECT IDENTIFIER ::= {xxx 1}
zkClassInfoTable2 OBJECT IDENTIFIER ::= {xxx 2}
zkClassInfoTable OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 1}
zkClassInfoEntry OBJECT-TYPE
SYNTAX ZkClassInfoEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable 1}
ZkClassInfoEntry ::= SEQUENCE {
zkClassInfoIndex Integer32,
zkClassInfoSex Integer32,
zkClassInfoAge Integer32,
zkCLassInfoName DisplayString,
zkClassInfoAddress DisplayString
}
zkClassInfoIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 1}
zkClassInfoSex OBJECT-TYPE
SYNTAX Integer32 {
man(1),
woman(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 2}
zkClassInfoAge OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 3}
zkCLassInfoName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 4}
zkClassInfoAddress OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry 5}
zkClassInfoTable2 OBJECT-TYPE
SYNTAX SEQUENCE OF ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is test table.
"
::= {xxx 2}
zkClassInfoEntry2 OBJECT-TYPE
SYNTAX ZkClassInfoEntry2
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"
This is teat entry.
"
INDEX {zkClassInfoIndex}
::= {zkClassInfoTable2 1}
ZkClassInfoEntry2 ::= SEQUENCE {
zkClassInfoSex2 Integer32,
zkClassInfoAge2 Integer32,
zkCLassInfoName2 DisplayString,
zkClassInfoAddress2 DisplayString
}
zkClassInfoSex2 OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"
"
::= {zkClassInfoEntry2 1}
END
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