Managing Ethernet MicroLAN Switches

The Board Trap Selection window is similar to the Repeater Trap Selection window displayed in Figure 5-10, and serves the same function (since, for the Ethernet MicroLAN Switch, a “board” is the equivalent of a repeater channel). If all port-level trap settings are uniform at the current level of device management (i.e., a given trap is either set to enabled or disabled for all ports on a repeated network segment), the check box for a given trap will return with an enabled or disabled state, as appropriate. If port-level trap settings are mixed at the current level of management (i.e., a given trap is enabled at some ports and disabled at other ports on the selected repeater channel), the check box for a given trap will be grayed, as illustrated above for Link State traps.

When you are changing trap settings at the Repeater or Board level, a check box that is left gray for a given trap is treated as a “No SET” indicator, so that the current settings at the individual port level with respect to that trap will not be overridden when you are changing other trap settings.

The Port Trap Selection window is similar to the other Trap Selection windows; however the gray mixed-mode will never appear when you first open the window (since at the port-level, a given trap can only be either enabled or disabled – not some combination of the two).

You can change trap settings from any level window; however, if you have established individual trap settings for any ports, remember that enabling and disabling traps from the repeater- or module-level windows will override those individual setting. Remember, too, that setting trap selection state at the repeater and module levels accomplishes the same thing, as each “board” on the Ethernet MicroLAN Switch is a repeated network.

Trap Definitions

You can enable or disable the following kinds of traps:

Link State Traps

Some Ethernet repeater ports – including RJ45 twisted pair and fiber optic ports – generate a link signal to monitor the status of their connection with the device at the other end of the cable segment. If the cable is removed or broken, the port’s link status goes to “No Link” and the repeater generates a portLinkDown trap. When a port in a “No Link” condition receives a link signal, the port goes to a “Link” condition and the repeater generates a portLinkUp trap. Devices at both ends of the disconnected or broken cable will generate the portLinkDown and portLinkUp traps, even when only one end of the cable has been removed.

Note that BNC (thin coax), AUI, and transceiver ports do not support a link signal. BNC ports respond to changes in link status by generating portSegmenting and portUnsegmenting traps (see description, below); AUI and transceiver ports do not respond at all to changes in link status (unless the port has been segmented due to excessive collisions), and will always display as on, even if no cable is connected.

Trap Selection

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Enterasys Networks 2000 manual Trap Definitions, Link State Traps
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2000 specifications

Enterasys Networks, a key player in the networking space in 2000, was renowned for its innovative solutions that combined high-performance networking with robust security features. Founded with the vision of providing enterprise-level networking infrastructure, Enterasys positioned itself to cater to the growing demands of business networks during the dot-com boom.

One of the main features of Enterasys Networks was its focus on delivering secure, scalable networking solutions that could seamlessly integrate with existing enterprise systems. The company developed a range of products including switches, routers, and wireless solutions that were designed to optimize performance while ensuring security at every layer. Their core offerings provided businesses with the reliability required to handle increasing volumes of data traffic.

A standout technology of Enterasys was its identity and access management solutions. These technologies allowed organizations to control who could access network resources and under what conditions. This was particularly crucial in a time when cyber threats were on the rise, and businesses were becoming more aware of the need for strict network security protocols. The features included role-based access control and authentication measures, which were fundamental in safeguarding sensitive information.

Enterasys also introduced intelligent networking features, which enabled dynamic traffic management and prioritization. This technology helped organizations optimize their network performance by automatically adjusting to changing workload demands. Such capabilities were essential for businesses relying on bandwidth-intensive applications and services.

The company also embraced the rising trend of wireless networking, providing solutions that combined wired and wireless technologies for a unified experience. Enterasys Wireless LAN solutions were groundbreaking at the time, offering seamless connectivity and security to mobile devices, thereby enhancing productivity and flexibility within enterprise environments.

In addition to hardware, Enterasys developed network management software that simplified the administration of complex networks. This software enabled IT professionals to monitor performance, troubleshoot issues, and implement security policies efficiently.

Overall, Enterasys Networks in 2000 was characterized by its commitment to delivering secure, intelligent networking solutions that catered to the needs of modern enterprises. With its innovative technologies and features, Enterasys played a significant role in shaping the networking landscape, laying the groundwork for future advancements in network security and management.
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