Monitoring LAN Traffic

Data for a LAN interface can be gathered by capturing current information and placing it into a buffer. This data can then be displayed.

Configuring the Monitor

To configure the parameters used in a capture, press [B] at the Traffic Monitor Menu (or [C], [E], [B] from the Main Menu). This will display a screen similar to the fol- lowing:

Nod e Name=n ode_xyz

	LAN Cap ture Statu s an d Control Men u
Protocols:		I P: N ot Loaded I PX : Not Loaded			Bridge: Not Load ed
R ecording: Active			Bu ffer: Allocated 4% (40 Even ts)
LA N0: Typ e: 802. 5			Cap ture: On	Options : IP, IPX, Brid ge, U nkn own
A	LAN Card:	0		D	Trace Brid ge:	On
B	Trace IP:	On		E	Trace Un know n:	On
C	Trace IPX:	Off		F	When Full:	S top

Option:

F1: R efresh F2: Stop Captu re F3: Exit F4: Purge Captu re F7: S tart Captu re

Figure 20-8 LAN Capture Status and Control Menu

[C], [E],[B] from Main Menu

Information in this Display:

●Protocols – shows whether or not each LAN protocol is loaded. (See Chapter 5.)

●Recording – will be Active or Not Active, depending on whether or not a capture is currently occurring.

●Buffer – will be Allocated if Recording is Active, or Not Allocated if Recording is

Not Active. If Allocated, the percentage of buffer filled and the number of events will also be shown.

●LAN0 – identifies the LAN interface type, shows whether or not a capture is occurring on the interface, and identifies the traffic type(s) to be monitored.

Each of the configurable parameters (items A–F) will toggle through the valid settings when selected. Note, however, that the changes will not be displayed on the LAN0 line above until you press [F1] to refresh the display.

Status Displays

20-17

1800 specifications

Cabletron Systems, a leading player in network management and telecommunications solutions during the late 20th century, introduced several innovative products that played a crucial role in shaping enterprise networking. Among these were the Cabletron FRX6000, FRX4000, and the FRX1800, which delivered advanced features aimed at enhancing network performance, security, and scalability.

The Cabletron FRX6000 was designed as a robust multi-layer switch, ideal for large-scale enterprise environments. It supported extensive routing capabilities, allowing organizations to manage traffic efficiently even under heavy loads. The FRX6000 boasted high throughput rates and low latency, making it suitable for demanding applications. With support for various network protocols, including IP, IPX, and AppleTalk, its adaptability made it a versatile choice for diverse networking needs. Moreover, security features like VLAN support and Access Control Lists (ACLs) provided enhanced protection against potential threats.

Moving to the FRX4000, this model offered a balance between performance and cost-effectiveness. The FRX4000 maintained many of the essential features of its larger counterpart while catering to medium-sized enterprises. It provided Layer 3 routing and could handle multiple simultaneous connections, ensuring seamless communication across departments. The modular design allowed for easy upgrades, enabling businesses to expand their network infrastructure without significant overhauls. This made the FRX4000 an attractive option for organizations looking to optimize their network investments.

Lastly, the FRX1800, designed for small to medium businesses, focused on simplicity and ease of use while still incorporating powerful network management capabilities. Its user-friendly interface made it accessible for organizations lacking extensive IT resources. The FRX1800 provided essential functionalities such as Integrated Layer 2 switching and routing, network monitoring, and basic security features, ensuring that even smaller companies could maintain efficient, reliable networking without overwhelming complexity.

All three models utilized advanced technologies, including a high bandwidth backbone and state-of-the-art switching architecture, to enable fast and reliable data transfer. They also supported Quality of Service (QoS) mechanisms, allowing businesses to prioritize critical applications and ensure consistent performance across the network.

In summary, the Cabletron FRX6000, FRX4000, and FRX1800 were pivotal in enhancing network capabilities, providing organizations with scalable, secure, and high-performance options tailored to their specific needs.

Cabletron Systems 1800 manual Monitoring LAN Traffic, Configuring the Monitor

Models: 1800