- :
;
- ;
- ;
- ;
, ;
, MIB;
( ), , , ;
( ), , , .
, - .
, .
- Internet, SNMP (Simple Network Management Protocol), ISO/ITU-T, CMIP (Common Management Information Protocol).
, SNMP, , ISO/ITU-T - , , ITU-T. , SNMP, ISO/ITU-T CMIP .
SNMP
SNMP-
, SNMP, :
;
MI SNMP - ASN.1 ( ISO 8824:1987, ITU-T X.208);
MIB (MIB-I, MIB-II, RMON, RMON 2), ISO. . SNMP SNMP MIB Internet . , , , . ITU-T, CMIP, SNMP-. SNMP , ADSL, . .
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SNMP - , TCP/IP, , IPX/SPX. SNMP , , MIB (Management Information Base). SNMP MIB SNMP, MIB I MIB II. , SNMP .
, MIB, , (, ).
MIB () , (private) , - MIB.
SNMP - , , , MIB .
, SNMP , . . , , .
SNMP
SNMP - -, , , . - .
Get-request - .
GetNext-request ( ) .
Get-response SNMP Get-request GetNext-request.
Set - . Set . , , - , VLAN . . Set , SNMP . , , , , , . , .
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Trap .
SNMP v.2 GetBulk, .
SNMP MIB
SNMP. MIB-I MIB-II, RMON MIB. MIB (, MIB MIB ), MIB - .
MIB-I . MIB-II.
MIB-I (RFC 1156) 114 , 8 .
System - (, , ).
Interfaces - (, , , , ).
Address Translation Table - (, ARP).
Internet Protocol - , IP ( IP-, , IP-).
ICMP - , ICMP.
TCP - , TCP (, TCP-)
UDP - , UDP ( , UPD-).
EGP - , Exterior Gateway Protocol, Internet ( ).
, MIB-I , TCP/IP.
MIB-II (RFC 1213), 1992 , ( 185) , 10. . 7.6 MIB-II. 10 - System ( Sys) Interfaces ( if). SysUpTime , SysObjectID - (, ).
. 7.6. MIB-II ()
ifNumber , ifEntry , . ifType ifAdminStatus , Ethernet.
, , .
ifType - , . , rfc877-x25, ethemet-csmacd, iso88023-csmacd, iso88024-tokenBus, iso88025-tokenRlng . .
ifMtu - , .
ifSpeed - (100 Fast Ethernet).
ifPhysAddress - , Fast Ethernet - .
ifAdminStatus - .
up - .
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down - .
testing - .
ifOperStatus - , , ifAdminStatus.
ifInOctets - , , , SNMP-.
iflnUcastPkts - , .
IflnNUcastPkts - , .
ifInDiscards - , , , , - .
ifin Errors - , - .
, , , .
MIB-II, Ethernet, , , .
MIB - RMON MIB, Ethernet, , .