1. Pertemuan 10 Perbedaan antar versi SNMP
Matakuliah : H0372/Manajemen Jaringan
Tahun : 2005
Versi : 1/0
Pertemuan 10 Perbedaan antar versi SNMP

2. Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
Menjelaskan karakteristik perbedaan v1,v2, dan SNMPv3

3. Outline Materi
Perbedaan dengan versi 1 dan 2
Security

4. SNMP v1
Primitive types
Defined types
Derived types
Constructive types

5. Major Changes Bulk data transfer Manager-to-manager message
Enhancements to SMI: SMIv2
Module definitions: MODULE-IDENTITY macro
Object definitions: OBJECT-TYPE macro
Trap definitions: NOTIFICATION-TYPE macro
Textual conventions
Conformance statements
Row creation and deletion in table
MIB enhancements
Transport mappings
Security features, originally to be in SNMPv2 moved to SNMPv3
SNMPv2, like SNMPv1, is community-based administrative framework

6. SNMPv2 NM Architecture SNMP Agent SNMP Manager SNMP Manager
Application
PDU
Application
PDU
SNMP Manager
Application
response
get-bulk-request
get-next-request
set-request
snmpV2-trap
get-request
inform-request
SNMP Manager
SNMP Agent
Application
response
get-bulk-request
get-next-request
set-request
snmpV2-trap
get-request
Application
inform-request
get-next-request
get-bulk-request
get-request
set-request
snmpV2-trap
response
SNMP
PDU
SNMP
PDU
SNMP
SNMP
SNMP
UDP
UDP
UDP IP IP IP
DLC
DLC
DLC
PHY
PHY
PHY
Physical Medium
Physical Medium

7. Traps in SNMPv1 Six generic traps have been defined
Encoded in the SNMP message field between 0-5
Other specific traps
Generic Trap field in message is 6
Vendor specific

8. Traps in SNMPv2 Traps are defined using NOTIFICATION-TYPE
Generic traps of snmpv1 have an object id under snmpTraps (a new object in SMIv2)
Each trap has a unique id

9. SNMPv2 Internet Group Objects added to System group
{ }
directory
(2)
mgmt
(2)
experimental
(3)
private
(4)
security
(5)
snmpv2(6)
Objects added to System group
Extensive modification of the SNMP group
Additional SNMPv2 group added
Security group is a placeholder

10. SNMPv2 System Group sysDescr (1) system (1.3.6.2.1.1) sysObjectId (2)
sysUpTime (3)
sysContact (4)
sysORLastChange (8)
sysServices (7)
sysLocation (6)
sysName (5)
sysORTable (9)
sysOREntry (1)
sysORIndex (1)
sysORID (2)
sysORDescr (3)
sysORUpTime (4)

11. SNMPv2 PDU Standardized format for all messages
Error
Error
VarBind 1
VarBind 1
VarBind n
VarBind n
RequestID
...
Type
Status
Index
name
value
name
value
Standardized format for all messages
Interpretation of error status and error index fields; in v1, if error occurs status and index field filled, but varBindList blank
Interpretation Status Index
varBindList ignored x
varBind of index field ignored x x

12. Bilingual Manager Bilingual Manager SNMPv2 Interpreter SNMPv1 Agents
Profile

13. SNMP Proxy Server
SNMPv1
Agents
SNMPv2 Manager
Proxy
Server
SNMPv2

14. SNMP Proxy Server Pass-Through SNMPv2 Manager SNMPv1 Agent
GetNextRequest
GetRequest
SetRequest
Set: 1. non-repeaters = 0
2. max-repetitions = 0
GetBulkRequest
Exception: For 'tooBig' error, contents of variable-bindings
field removed .
Response
Prepend VarBind: 1. sysUpTime.0
2. snmpTrapOID.0
SNMPv2-Trap
GetResponse
Trap
SNMP v2-v1 Proxy Server