Appendix C Translated Safety Warnings

Switch Installation In Hazardous Location

Switch Installation In Hazardous Location

Warning In switch installations in a hazardous location, the DC power source could be located away from the vicinity of the switch. Before performing any of the following procedures, locate the DC circuit to ensure that the power is removed and cannot be turned on accidentally, or verify that the area is nonhazardous before proceeding. Statement 1059

Waarschuwing Bij schakelinstallaties in een gevaarlijke locatie, mag de gelijkstroombron zich niet in de buurt van de schakelaar bevinden. Voordat u een van de volgende procedures uitvoert, dient u bij het gelijkstroomcircuit te controleren of de stroom is afgesloten en niet per ongeluk kan worden aangezet of dient u te controleren of het gebied niet gevaarlijk is voordat u doorgaat.

Varoitus Kun kytkimen asennus tehdään vaaralliselle paikalle, tasavirtalähde voidaan sijoittaa pois kytkimen läheisyydestä. Ennen kuin suoritat mitään seuraavista toimista, etsi tasavirtapiiri ja varmista, että virta on katkaistu ja ettei sitä voida kytkeä vahingossa päälle, tai varmista ennen jatkamista, ettei alue ole vaarallinen.

Attention Dans les installations commutées, si le site est dangereux, il est possible d'installer la source d'alimentation CC loin de l'interrupteur. Avant de réaliser l'une des procédures suivantes, identifiez le circuit CC pour vous assurer que l'alimentation est coupée et ne risque pas d'être rétablie par accident. Vérifiez que le site de travail ne présente aucun danger avant de continuer.

Warnung Bei einer Switch-Installation in einem explosionsgefährdeten Gebiet, befindet sich die Gleichstromquelle evtl. nicht in unmittelbarer Nähe des Switches. Bevor Sie einen der folgenden Vorgänge ausführen, informieren Sie sich über den Standort der Gleichstromquelle, und vergewissern Sie sich, dass die Stromzufuhr unterbrochen ist und nicht versehentlich eingeschaltet werden kann, oder überprüfen Sie, dass es sich beim Standort nicht um ein explosionsgefährdetes Gebiet handelt.

 

 

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Cisco Systems Catalyst 2955 manual Switch Installation In Hazardous Location

Catalyst 2955 specifications

The Cisco Systems Catalyst 2955 is a robust and versatile Ethernet switch designed for enterprises seeking reliable Layer 2 switching capabilities. Known for its steadfast performance and extensive feature set, the Catalyst 2955 is particularly favored for environments requiring high-density connectivity and advanced traffic management.

One of the hallmark features of the Catalyst 2955 is its support for IEEE 802.1Q VLAN tagging, which allows for efficient traffic segregation and helps improve network security. The switch can handle up to 256 virtual LANs, supporting a more organized network structure and optimized resource allocation. This VLAN capability is crucial for businesses that need to segment their networks for various departments or applications while maintaining efficient communication between them.

The Catalyst 2955 is equipped with a comprehensive Quality of Service (QoS) mechanism, which prioritizes critical applications and ensures that voice, video, and data traffic receive appropriate bandwidth. By providing features such as classification, marking, queuing, and congestion avoidance, the switch helps meet the demands of real-time applications, thereby enhancing user experience and productivity.

Another remarkable technology integrated into the Catalyst 2955 is Spanning Tree Protocol (STP), which prevents loops in redundant network connections. Enhanced with features like Rapid Spanning Tree Protocol (RSTP), this switch minimizes downtime by allowing for quicker convergence times in case of topology changes. The ability to support both STP and RSTP is vital for maintaining network stability and performance.

The Catalyst 2955 is also designed with network management and monitoring in mind. It includes features like Simple Network Management Protocol (SNMP), which enables administrators to manage network resources effectively and troubleshoot issues more efficiently. With support for Cisco’s proprietary software, it offers insights into traffic patterns and usage statistics that can aid in maintaining optimal network health.

Physical characteristics of the Catalyst 2955 include various configurations with either 24 or 48 ports, suitable for different deployment scenarios. The switch is designed for rack mounting, making it an ideal solution for data centers and enterprise networks where space is a consideration.

In summary, the Cisco Systems Catalyst 2955 stands out for its solid Layer 2 functionality, VLAN support, QoS capabilities, network stability features such as STP, and extensive management tools, making it an excellent choice for organizations aiming to enhance network resiliency and performance. Its balance of performance and manageability continues to make it a viable option in the competitive landscape of networking equipment.