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SNMP (Avantages : :check: (Centralized Access, Security[Within SNMPv3],…
SNMP
Avantages : :check:
Centralized Access
Security[Within SNMPv3]
Fiability
Evolution
works on different devices
disadvantages :red_cross:
user credentials ofr every SNMP PACKET
Huge waste of bandwidth
Complexity of getBulk
Repetitive Header information within SNMP PACKET [version,community..]
very talkative Protocol
Presentation :
WHY?
troubleshooting network-related issues was extremely difficult
The lack of functionality and interoperability
Using a multitude of management systems and network-related
commands
purpose?
to monitor network devices and hosts
to manage network devices and hosts
BASICS :
manages information in both single- and multivendor environments [LAN/WAN]
sent by UDP/IP through ports 161 and 162
Layer 7 of the OSI model[Application layer]
supported on an extensive range of hardware
push and pull communications between network devices and the NMS
Versions:
SNMPv1
SNMPv2
SNMPv2c
SNMPv2u
SNMPv3
What are its Components?
SNMP Manager[or NMS]
ENTERPRISE-grade platforms
FREE NMS
SNMP Agents
MIB
Extensions
RMON
SMON
Commands :
NMS Side
[UDP PORT 161]
interrogation Commands
GET-Request
GET-NextRequest
Get-Bulk
SET
Possible cases of Response
Agent Side:
[UDP PORT 162]
Trap
Enterprise
Agent Addess
Specific Trap Code
Generic Trap Type
Time Stamp
Variable Binding
Inform [snmpv2c]
Implementation of SNMP within a Network :
Primary Configuration
Information Retrieving
What Future for SNMP?