Computer Networking Concepts RMON RMON Remote Network Monitoring

RMON- Remote Network Monitoring • RMON is a MIB definition that provides for remote

RMON- Remote Network Monitoring con’t • The information that the RMON MIB provides is

RMON- Remote Network Monitoring con’t 5. Host: Statistics can be gathered on individual nodes

RMON- Remote Network Monitoring con’t • SNMP allows you to monitor and control a

RMON- Remote Network Monitoring con’t • SNMP Compliant nodes allow information to be displayed

References Introduction to Data Communications Copyleft Sept. 1999 - Jan 2005 TCP/IP Tutorial and

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Computer Networking Concepts: RMON

RMON- Remote Network Monitoring • RMON is a MIB definition that provides for remote network monitoring and manager to manager communications. • This standard defines the information that a device must collect to provide an accurate picture of a network's health.

RMON- Remote Network Monitoring con’t • The information that the RMON MIB provides is divided into the following 9 groups: 1. Segment Statistics: Statistics on the attached segment: packets, octets, collisions. . . 2. History: Data collected by the statistics group for future retrieval and analysis 3. Alarms: Thresholds can be set for certain alarm condition. (Collisions/sec) 4. Events: Thresholds can be set for certain event conditions to trigger certain activities.

RMON- Remote Network Monitoring con’t 5. Host: Statistics can be gathered on individual nodes or hosts on the LAN. 6. Host Top N: Statistics can be gathered on individual nodes over a user-specified time. 7. Traffic Matrix: Shows the amount of traffic and number of errors between any host pair. 8. Packet Capture: Allows capturing of entire packets or individual slices indicating protocols used. 9. Filters: The filter group specifies the criteria that the packet is going to be captured by.

RMON- Remote Network Monitoring con’t • SNMP allows you to monitor and control a TCP/IP Network using SNMP Managers. • All nodes (Agents) on a network, regardless of whether they are SNMP compliant, should show up on the Network map. • The SNMP non-compliant nodes typically show up as being present but not accessible.

RMON- Remote Network Monitoring con’t • SNMP Compliant nodes allow information to be displayed that indicates how the node is configured. • Machine Type, Ethernet Address, DOS Ver, IP Address, Name, etc. . .

References Introduction to Data Communications Copyleft Sept. 1999 - Jan 2005 TCP/IP Tutorial and Technical Overview An IBM Redbooks publication Published 19 December 2006 Computer Networking: A Top-Down Approach (7 th Edition) James Kurose & Keith Ross