Cabletron Systems SEHI-22/24, SEHI-32/34 manual Monitoring Redundancy, To set the Poll Interval

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Repeater Redundancy

different port to be Primary or Active, the original Primary or Active port automatically resets to Backup/Inactive.

NOTE

NOTE

All backup ports will be disabled as soon as you enable the redundant circuit. The ports remain disabled until they become active due to primary port failure. If you disable the redundant circuit, you must manually enable each backup port in that circuit.

6.Once you have configured all the ports that compose the redundant circuit,

enable the circuit by clicking .

Be sure to make all physical connections to the backup ports once the redundant circuit has been configured and enabled.

To clear the settings in one circuit, highlight the Circuit Name that you want to

clear, and click on .

To clear all redundancy configurations, click on in the All Circuits portion of the window. Reset does the following:

•Deletes all entries in the Circuit Addresses box

•Changes the status of every Circuit to Disabled

•Reverts to previous Circuit Name(s)

•Clears all module and port entries

NOTE

After clearing redundancy settings by either method, backup ports remain disabled until you manually reenable them so that data loops do not occur. Before you enable the ports, disconnect their physical connections.

Monitoring Redundancy

Once you have configured your redundant circuits, you can use the fields in the All Circuits box to set the parameters that the SEHI uses to periodically test each of the circuits. The SEHI automatically polls all enabled circuits through the Primary port and all Backup ports at the time specified in the Test Time box. If the first poll fails (results in a no link condition with all of the circuit IP addresses), the SEHI checks the circuit’s Retries field. If Retries is greater than 0, the SEHI waits the number of seconds specified in the Poll Interval field, and then polls the circuit again.

To set the Poll Interval:

Monitoring Redundancy

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Contents Complete Networking Solution Page Virus Disclaimer Applicable to licenses to the United States Government only Restricted Rights NoticeContents Chapter Source Addressing Chapter Repeater RedundancyChapter Security Appendix a Sehi MIB StructureIntroduction to Spma For the SEHI-22/24 and SEHI-32/34 Using the Sehi User’s GuideUsing the Sehi User’s Guide What’s not in the Sehi User’s Guide ConventionsScreen Displays Introduction to Spma for the SEHI-22/24 and SEHI-32/34 Button Using the MouseFTP Getting HelpSehi Firmware Page Using the Hub View Using the Sehi Hub ViewHub View Front Panel Navigating Through the Hub ViewDate and Time UptimeDevice Name LocationUsing the Sehi Hub View Using the Mouse in the Hub View Ports Display Port Display Form Hub View Port Color CodesMonitoring Hub Performance Port Display Form ErrorsLoad CollisionsPort Type Frame SizesName and Location Checking Device Status and Updating Front Panel InfoContact Chassis Type Checking Module StatusName Active Users Checking Repeater StatusModule Type Link Status Checking Port StatusMedia Type StatusTopology Type Checking StatisticsTotal Packets Received BytesAvg Packet Size Broadcast PacketsAlignment Errors Total ErrorsCRC Errors Multicast PacketsGiant Frames Runt FramesProtocols Viewing the Port Source Address ListManaging the Hub Contact Status Setting the Polling IntervalsDevice General Status Enabling/Disabling PortsDevice Configuration Port Operational StateUsing the Sehi Hub View Using the Sehi Hub View Managing the Hub Link/Seg Traps What is a Segmentation Trap?Enabling and Disabling Link/Seg Traps What is a Link Trap?From the icon From the Hub View From the command line stand-alone modeViewing and Configuring Link/Seg Traps for Hub Modules Configuring Link/Seg Traps for the RepeaterModule Traps Window Viewing and Configuring Link/Seg Traps for PortsPort Traps Window Repeater Redundancy Setting Network Circuit RedundancySpmarun r4red IP address community name Configuring a Redundant CircuitChannel X Redundancy Window Add Circuit Address Window To set the Poll Interval Monitoring RedundancyClick in the All Circuits box Displaying the Source Address List Source AddressingDisplaying the Source Address List Source Addressing Setting the Ageing Time Setting the Hash TypeLocking Source Addresses Source Address Locking on Older Devices Configuring Source Address Traps Module- and Port-level Traps Device-level TrapsSource Addressing Source Addressing Port Source Address Traps Window Finding a Source AddressFind Source Address Window Click on to exit the window Source Addressing Finding a Source Address Security Spmarun r4sec IP address SU community name What is LANVIEWSECURE?Secure address assignment New definitions for station and trunk portsTrunk port security Continuous learning mode Newest Lanviewsecure FeaturesConfigurable violation response Full or partial security against eavesdroppingSecurity on Non-LANVIEWSECUREHubs Learned addresses resetForced non-secure status Configuring Security Security To assign secure addresses to a port Addresses Window Add MAC Address Window Resetting Learned AddressesTips for Successfully Implementing Eavesdropper Protection Enabling Security and Traps Repeater-level Security and Traps Channel a Security Window Hub-level Security and TrapsChannel a Module Security Window Port-level Security and TrapsChannel a Port Security Window Security Security Enabling Security and Traps Sehi MIB Structure Ietf MIB SupportSehi Chassis MGR Sehi IP Services Sehi Host ServicesBrief Word About MIB Components and Community Names Repeater OneSehi MIB Structure Sehi MIB Structure Index Index-2 Index-3 Index Index-4

SEHI-22/24, SEHI-32/34 specifications

Cabletron Systems was a notable player in the networking hardware market during the rise of local area networks (LANs) in the late 20th century. Among its innovative products were the SEHI-22/24 and SEHI-32/34 modules, which were designed to enhance network capabilities in enterprise environments.

The SEHI-22/24 and SEHI-32/34 were versatile high-performance Ethernet switch modules that offered significant advantages in network management and connectivity. These modules were designed to work with Cabletron's modular switching and routing architecture, allowing for scalable solutions tailored to specific network demands. A key feature of the SEHI series was its support for a range of Ethernet standards, ensuring compatibility with diverse networking environments.

One notable characteristic of the SEHI-22/24 was its ability to support both 10Base-T and 100Base-TX Ethernet technologies. This dual support enabled organizations to leverage existing 10 Mbps infrastructure while facilitating upgrades to 100 Mbps speeds without needing a complete overhaul of the network. Similarly, the SEHI-32/34 offered even greater connectivity options, accommodating more users and devices while maintaining high throughput and low latency.

In terms of management features, the SEHI series was equipped with extensive traffic management capabilities, including Quality of Service (QoS) features that prioritized bandwidth for critical applications. This ensured that essential services such as voice over IP (VoIP) and video conferencing could function optimally, even during heavy network loads.

Furthermore, both modules featured advanced diagnostics and monitoring tools that provided network administrators with critical insights into traffic patterns and potential bottlenecks. This functionality was essential for maintaining network health and optimizing performance, especially in dynamic business environments.

Security also played a crucial role in the design of the SEHI-22/24 and SEHI-32/34. The modules incorporated support for various authentication methods and access controls, ensuring that sensitive data remained protected within the corporate network.

In summary, Cabletron Systems’ SEHI-22/24 and SEHI-32/34 offered significant advancements in Ethernet switching technology, allowing organizations to build robust, scalable, and secure networks. With their impressive features, compatibility, and capacity for management and security, these modules were instrumental in shaping reliable networking solutions for enterprises navigating the rapidly evolving digital landscape.
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