, . SNMP (Simple Management Network Protocol ) . IP-, , 1 . , (, , ) CMIP, ITU-T.
(SNMPv2), . IETF , (SNMPv3). , , SNMPvl, SNMPv3 .
SNMP , TCP/IP, , IPX/SPX. SNMP , , MIB. SNMP MIB SNMP, MIB-I MIB-II.
, , SNMP:
( SNMP).
MIB SNMP- ASN.1 ( ISO 8824:1987, ITU-T .208). MIB, , (, ).
MIB (MIB-I, MIB-II, RMON, RMON 2), ISO. MIB () , , - MIB.
.
SNMP -, , , . :
Get-request - .
GetNext-request ( ) .
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Get-response SNMP- Get-request GetNext-request.
Set - . Set . , , , VLAN . . Set , SNMP- . , , , , , . , .
Trap .
SNMPv2 GetBulk, .
SNMP MIB
SNMP. MIB-I MIB-II, RMON (Remote Monitoring) MIB. , I- (, MIB MIB ), MIB - .
MIB-I . MIB-II.
MIB-I (RFC 1156) 114 , 8 :
1. System (, , ).
2. Interfaces (, , , , ).
3. Address Translation Table (, ARP).
4. Internet Protocol , IP ( I-, , IP-).
5. ICMP , ICMP.
6. TCP , TCP (, -).
7. UDP , UDP ( , UPD-).
8. EGP , EGP, ( ).
, MIB-I , TCP/IP.
MIB-II (RFC 1213), 1992 , ( 185) , 10.
.17.5 MIB-II ().
17.5 MIB-II. 10 System ( Sys) Interfaces ( if).
SysUpTime , SysObjectID (, ).
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ifNumber , ifEntry , . ifType ifAdminStatus , Ethernet.
, :
ifType , . .
ifMtu , .
if Speed (100 Fast Ethernet).
ifPhysAddress , Fast Ethernet -.
ifAdminStatus : up ; down ; testing .
ifOperStatus , , ifAdminStatus.
iflnOctets , , , SNMP-.
iflnUcastPkts , .
iflnNUcastPkts , .
iflnDiscards , , , , - .
iflnErrors , - .
, , , .
MIB-II, Ethernet, , , .
.17.6 ISO.
, ISO , . , , ISO, ITU ISO-ITU. , ISO , ( org). (Department of Defense, DoD) , MIB dod-internet, , , mgmt. , ISO, , . , . , , . MIB iso.org.dod. intemet.mgmt.mib 1.3.6.1.2.1.
private (4) , , Cisco, Hewlett-Packard . . CMIP TMN.
, MIB-I MIB-II , , .
SNMP-
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SNMP-, , . SNMP- , .
SNMP- : , .
(community string) , . , , SNMP, ( public).
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;
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SNMP MIB, .
17.7 SNMP, SysDescr ( 1.3.6.1.2.1.1.1).
.17.7 SNMP.
, 30 ( ), SEQUENCE () , . (41 ). , (integer) 1 (vers) SNMP ( 0, SNMPvl, a 1 SNMPv2). community string ( ) 6 public. GetRequest-PDU. To, Get-request, , 28 . Getrequest-PDU ( 4- 05 56 02). , 0. , , . 1.3.6.1.2.1.1.1.0, SysDescr. null ( 05) , .
SNMP
SNMP , :
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UDP ( SNMP) , . SNMP, . ( CMIP OSI .)
. , HP OV Telecom DM TMN, ISO, SNMP, SNMP- .
IP-, IP .
, , DWDM SDH. () . IP- .
, IP ATM Frame Relay, .
IP- , IP , ATM Frame Relay, IP- ( PDH/SDH/DWDM).
IP : HDLC . , . HDLC . HDLC , , , .
, , . - . CHAP.
MPLS . MPLS: , .
TCP/IP , (LSR), IP-, .
MPLS: MPLS IGP, MPLS MPLS VPN. MPLS IGP , MPLS , MPLS VPN VPN .
(NMS) , , .
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TFTP
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WEB-
WEB-. WEB- . WEB- . ,WEB- .
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8. SNMP.
9. SNMP?
10. SNMP.
11. SNMP.
12. SNMP?
13. TFTP, ?
14. WEB-, ?
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16. Telnet, ?
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