1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
RFC1155-SMI DEFINITIONS ::= BEGIN
EXPORTS -- EVERYTHING
internet, directory, mgmt,
experimental, private, enterprises,
OBJECT-TYPE, ObjectName, ObjectSyntax, SimpleSyntax,
ApplicationSyntax, NetworkAddress, IpAddress,
Counter, Gauge, TimeTicks, Opaque;
-- the path to the root
internet OBJECT IDENTIFIER ::= { iso org(3) dod(6) 1 }
directory OBJECT IDENTIFIER ::= { internet 1 }
mgmt OBJECT IDENTIFIER ::= { internet 2 }
experimental OBJECT IDENTIFIER ::= { internet 3 }
private OBJECT IDENTIFIER ::= { internet 4 }
enterprises OBJECT IDENTIFIER ::= { private 1 }
-- definition of object types
OBJECT-TYPE MACRO ::=
BEGIN
TYPE NOTATION ::= "SYNTAX" type (TYPE ObjectSyntax)
"ACCESS" Access
"STATUS" Status
VALUE NOTATION ::= value (VALUE ObjectName)
Access ::= "read-only"
| "read-write"
| "write-only"
| "not-accessible"
Status ::= "mandatory"
| "optional"
| "obsolete"
END
-- names of objects in the MIB
ObjectName ::=
OBJECT IDENTIFIER
-- syntax of objects in the MIB
ObjectSyntax ::=
CHOICE {
simple
SimpleSyntax,
-- note that simple SEQUENCEs are not directly
-- mentioned here to keep things simple (i.e.,
-- prevent mis-use). However, application-wide
-- types which are IMPLICITly encoded simple
-- SEQUENCEs may appear in the following CHOICE
application-wide
ApplicationSyntax
}
SimpleSyntax ::=
CHOICE {
number
INTEGER,
string
OCTET STRING,
object
OBJECT IDENTIFIER,
empty
NULL
}
ApplicationSyntax ::=
CHOICE {
address
NetworkAddress,
counter
Counter,
gauge
Gauge,
ticks
TimeTicks,
arbitrary
Opaque
-- other application-wide types, as they are
-- defined, will be added here
}
-- application-wide types
NetworkAddress ::=
CHOICE {
internet
IpAddress
}
IpAddress ::=
[APPLICATION 0] -- in network-byte order
IMPLICIT OCTET STRING (SIZE (4))
Counter ::=
[APPLICATION 1]
IMPLICIT INTEGER (0..4294967295)
Gauge ::=
[APPLICATION 2]
IMPLICIT INTEGER (0..4294967295)
TimeTicks ::=
[APPLICATION 3]
IMPLICIT INTEGER (0..4294967295)
Opaque ::=
[APPLICATION 4] -- arbitrary ASN.1 value,
IMPLICIT OCTET STRING -- "double-wrapped"
END
|
