Appendix C Translated Safety Warnings

Switch Relays Warning

Aviso Os relés do switch estão regulados para 1A e limite de voltagem de 30 VDC e 0,3A com limite de voltagem de 125 VAC. É perigoso exceder esses limites em um ambiente de risco.

Pode ocorrer um arco elétrico se você conectar ou desconectar os cabos do relé com a alimentação de campo aplicada. Isso pode causar uma explosão em instalações de switches localizadas em um local de risco. Antes de prosseguir, confirme se a alimentação foi removida ou se a área é segura.

¡Advertencia! Los relés del switch son de 1 amp y su límite de voltaje es de 30 V CC y 0,3 amp

aun límite de voltaje de 125 V CA. Resulta peligroso superar estos límites en un entorno de riesgo.

Al conectar o desconectar los cables del relé con suministro de alimentación, se puede crear un arco eléctrico que podría provocar una explosión en las instalaciones de switch que se encuentren en un lugar peligroso. Antes de continuar, asegúrese de que se ha interrumpido el suministro de alimentación o de que el área no es peligrosa.

Varning! Reläomkopplarna har märkvärdet 1 A och har en spänningsgräns på 30 V likström och 0,3 A med en spänningsgräns på 125 V växelström. Det är farligt att överskrida dessa begränsningar i en farlig miljö.

En elbåge kan uppstå när du kopplar till eller från reläledningar med

fältsideffekt på. Detta kan leda till en explosion i omkopplarinstallationer på en farlig plats. Innan du fortsätter ska du kontrollera att strömmen har slagits av och att platsen inte är farlig.

 

 

Catalyst 2955 Hardware Installation Guide

 

 

 

 

 

 

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Cisco Systems Catalyst 2955 manual Appendix C Translated Safety Warnings Switch Relays Warning

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.