Page 39 - CITS - Computer Software Application -TT

COMPUTER SOFTWARE APPLICATION - CITS

RMON
RMON1, or Remote Network Monitoring Version 1, is an initial. version of the Remote Network Monitoring (RMON)
standard. It was designed to facilitate remote monitoring and analysis of network traffic and performance on
specific network segments. RMON1 focuses on providing essential statistics and information relating to network
traffic and errors, primarily at the physical and data link layers of the OSI model.
Key features of RMON1 include:
1 Packet and Byte Counts: RMON1 allows administrators to gather information on the number of packets and
bytes transmitted and received on a network segment. This data helps in understanding network utilization.

2 Error Statistics: RMON1 provides insights into various types of errors occurring on the network, such as CRC
errors, collision counts, and other anomalies.
3 Utilization Metrics: Administrators can monitor the utilization of network resources, which helps in identifying
congestion and potential performance issues.
4 Promiscuous Mode: RMON1 enables network devices to capture packets in promiscuous mode, allowing
administrators to analyses all traffic passing through a specific segment.
5 Historical Data: RMON1 supports historical data collection, allowing administrators to track network trends
over time.

6 Alarms and Events: RMON1 can generate alarms or events based on specified thresholds, notifying
administrators when specific conditions are met (e.g., excessive errors).
7 Protocol Distribution: This feature provides statistics about the distribution of different network protocols,
helping administrators understand the composition of network traffic.

The wireless channel - Link level design - Channel
Access Network design - Standards

It seems like you’re looking for information on wireless communication, link-level design, channel access methods,
and standards. I’ll provide a brief overview of each topic:
1 Wireless Channel: The wireless channel refers to the medium through which wireless signals propagate
between devices. It’s influenced by factors such as distance, obstacles, interference, and environmental
conditions. To design an effective wireless communication system, understanding the characteristics of
the wireless channel is crucial. Different wireless technologies (e.g., Wi-Fi, cellular, Bluetooth) use various
frequency bands and modulation schemes to mitigate channel effects and improve signal reliability.
2 Link-Level Design: Link-level design focuses on optimizing the communication link between a transmitter and
a receiver. This involves choosing modulation schemes, coding techniques, and error correction mechanisms
to maximize data throughput while maintaining a reliable connection. The design also considers signal-to-
noise ratio (SNR), bit error rate (BER), and other performance metrics to ensure efficient data transmission.
3 Channel Access Methods: In wireless networks, multiple devices share the same channel, which can lead to
collisions and reduced efficiency. Channel access methods determine how devices access and use the shared
channel. Common methods include:
• Frequency Division Multiple Access (FDMA): Divides the channel into frequency bands, with each device
allocated a specific band.
• Time Division Multiple Access (TDMA): Divides the channel into time slots, allowing different devices to
transmit at different times.
• Code Division Multiple Access (CDMA): Uses unique codes to differentiate between devices, allowing
multiple devices to transmit simultaneously.
• Carrier Sense Multiple Access (CSMA): Devices listen for a clear channel before transmitting to avoid
collisions. Variants include CSMA/CA (Collision Avoidance) used in Wi-Fi and CSMA/CD (Collision
Detection) used in Ethernet.

26

CITS : IT&ITES - Computer Software Application - Lesson 01-17