Chapter 5

Configuring the Switch

The switch can be configured to accept management commands from Simple Network Management Protocol (SNMP) applications.. You can configure the switch to respond to SNMP requests or generate SNMP traps..

When SNMP management stations send requests to the switch (either to return information or to set a parameter), the switch provides the requested data or sets the specified parameter.. The switch can also be configured to send information to SNMP managers (without being requested by the managers) through trap messages, which inform the manager that certain events have occurred..

The switch includes an SNMP agent that supports SNMP version 1, 2c, and 3 clients.. To provide management access for version 1 or 2c clients, you must specify a community string.. The switch provides a default MIB View (i..e.., an SNMPv3 construct) for the default “public” community string that provides read access to the entire MIB tree, and a default view for the “private” community string that provides read/write access to the entire MIB tree.. However, you may assign new views to version 1 or 2c community strings that suit your specific security requirements..

SNMP > Global Parameters

An SNMPv3 engine is an independent SNMP agent that resides on the switch..This engine protects against message replay, delay, and redirection.. The engine ID is also used in combination with user passwords to generate the security keys for authenticating and encrypting SNMPv3 packets..

A local engine ID is automatically generated that is unique to the switch.. This is referred to as the default engine ID.. If the local engine ID is deleted or changed, all SNMP users will be cleared.. You will need to reconfigure all existing users..

SNMP > Global Parameters

A new engine ID can be specified by entering 5 to 32 octets in hexadecimal characters..

Local Engine ID  Enter an ID of 5 to 32 hexadecimal characters and then click Save..

User Default  Check this box to set as default..

Enable Authentication Traps  Issues a notification message to specified IP trap managers whenever authentication of an SNMP request fails.. Click the check box to enable Authentication traps..

Enable Link-up and Link-down Traps  Issues a notification message whenever a port link is established or broken.. Click the check box to enable Link-up/down traps..

To send inform messages to an SNMPv3 user on a remote device, you must first specify the engine identifier for the SNMP agent on the remote device where the user resides.. The remote engine ID is used to compute the security digest for authenticating and encrypting packets sent to a user on the remote host..

SNMP passwords are localized using the engine ID of the authoritative agent.. For informs, the authoritative SNMP agent is the remote agent.. You therefore need to configure the remote agent’s SNMP engine ID before you can send proxy requests or informs to it..

The engine ID can be specified by entering 5 to 32 hexadecimal characters..

Remote Engine ID  Enter an ID of 5 to 32 hexadecimal characters..

Remote IP Host  The Internet address of the remote device where the user resides..

Action  Click to add or remove the Remote Engine ID and Remote host details entered..

48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet

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Cisco Systems SRW248G4P manual Snmp Global Parameters
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SRW248G4P specifications

Cisco Systems SRW248G4P is a high-performance Layer 2 switch designed specifically for small to medium-sized businesses that require robust networking solutions. This switch supports Power over Ethernet (PoE), providing a highly flexible option for powering devices such as IP phones, wireless access points, and surveillance cameras.

One of the standout features of the SRW248G4P is its 48 10/100 Ethernet ports, which ensure ample connectivity for various networked devices. Additionally, it offers four Gigabit Ethernet uplink ports, allowing for seamless integration with existing network infrastructure and facilitating high-speed data transfer. The combination of these ports enables businesses to expand their network capabilities as needed without the immediate requirement for added devices.

The SRW248G4P comes equipped with advanced Layer 2 switching capabilities, including VLAN support, which enables the segmentation of network traffic for improved performance and security. It also supports Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP), which help prevent network loops and ensure redundancy. With features like Link Aggregation Control Protocol (LACP), multiple physical connections can be combined into a single logical link, enhancing bandwidth and providing failover capabilities.

Another critical attribute of the Cisco SRW248G4P is its user-friendly management interface. The switch can be managed through a web-based interface, allowing IT administrators to configure settings, monitor performance, and troubleshoot issues with ease. Additionally, it supports SNMP (Simple Network Management Protocol) for integration with network management systems, further simplifying monitoring tasks.

Power over Ethernet functionality is a significant advantage of the SRW248G4P, providing up to 15.4 watts per port. This capability simplifies installation and reduces the clutter of power cords and outlets. Organizations can deploy PoE-enabled devices in locations that lack power sources, thus enhancing overall flexibility in network design.

In summary, the Cisco Systems SRW248G4P is a feature-rich switch tailored for small to medium-sized enterprises. Its blend of performance, management capabilities, and advanced features like PoE makes it a valuable asset in any organization's networking setup. By ensuring reliable connectivity and ease of management, businesses can focus more on growth and their core objectives rather than worrying about network complexities.
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