Download SNMP and CMIP

SNMP and CMIP
By,
Vishwajit Singh
Srigiri Laxman Srinivas
ISQS 6341, Spring 2000
What is Network Management?
 NETWORK MONITORING
 NETWORK CONTROL
Network Monitoring
Observing and Analyzing the status and
behavior of the
End Systems
Intermediate Systems
Sub-networks
Network Monitoring Architecture
 Network Monitoring Information.
 Network Monitoring Configurations.
 Polling and Event Reporting.
Network Monitoring Information
 Static : eg. identification of a port on a
router.
 Dynamic : eg. transmission of a packet on
the network.
 Statistical : eg. number of packets
transmitted per unit of time by an end
system.
Network Monitoring
Configurations
Based on Client-Server Model.
Monitoring
Application
Manager
Function
CLIENT
Monitoring Agent
Agent
Function
Managed
Objects
Agent
Function
Managed
Objects
SERVER
Polling and Event Reporting
 Polling : Manager generates the requests
periodically.The initiative is with the
manager.
 Event Reporting : The initiative is with the
agent.
Monitoring Types
 Performance Monitoring
 Fault Monitoring
 Accounting Monitoring
Performance Monitoring
 Availability
 Response Time
 Accuracy
 Throughput
 Utilization
Fault Monitoring
 Unobservable Faults : eg.Vendor may not
have taken care of.
 Partially Observable Faults : eg.Node
failure.
 Uncertainty in Observation : eg:Lack of
response from remote device.
Accounting Monitoring:
Keeping the track of the usage of the
network resources by the users.
Network Control
Is concerned with modifying parameters in,
and causing actions to be taken by, the end
systems, intermediate systems, and
subnetworks that make up the configuration
to be managed.
Configuration Control
Modification Types:
Database update only
Database update plus resource modification
Database update plus action
SNMP
Simple Network Management Protocol is an
Application layer protocol.
Part of the TCP/IP protocol suite.
Basic Components of SNMP:
1. Manager
2. Agent
3. MIB(Management Information Base)
SNMP Management Station
SNMP Agent
Managed Resources
Management
Application
1
2
3
SNMP Managed
Objects
1
4 5
2
3
4 5
SNMP Manager
SNMP Agent
UDP/TCP
UDP/TCP
IP
IP
Network dependent protocols
Network dependent protocols
Network
Or Internet
1. GetRequest
2. GetNextRequest 3. SetRequest
4. GetResponse
5. Trap
Management Information Base
 Database containing the information about
the elements to be managed.
 Each resource to be managed is referred as
an object.
 Network manager monitors the resource by
reading the values of the objects and
controls the objects by modifying these
values.
MIB
 Associated with each object in the MIB is
an identifier called the OBJECT
IDENTIFIER.
 Its used for naming the object.
 It’s a unique identifier for a particular object
type and its value consists of a sequence of
numbers.
Ready for a DEMO??????
 http://www.rad.com/networks/1998/snmp/sn
mp.html