Chapter 5

Configuring the Switch

Select the entry from the table that you wish to change, then click Edit Class Element.. Add rules to a selected class using the ACL list drop-down menu or the IP DSCP, IP Precedence and VLAN text fields provided, then click Add..

QoS > DiffServ Settings > Edit Class Element

Class Rule  Edits the rules for the class by specifying the type of traffic based on an access list, a DSCP or IP Precedence value, or a VLAN..

ACL  Name of an access control list.. Any type of ACL can be specified, including standard or extended IP ACLs and MAC ACLs.. (Range: 1-16 characters)

IP DSCP  A DSCP value.. (Range: 0-63)

IP Precedence  An IP Precedence value.. (Range: 0-7)

VLAN  A VLAN value.. (Range: 1-4094)

Add  Adds the specified criteria to the class.. Only one entry is permitted per class..

Remove  Deletes the selected criteria from the class..

Policy Map

A policy map can contain multiple class statements that can be applied to the same interface with the Service Policy Settings.. You can configure up to 63 policers (that is, class maps) for Fast Ethernet and Gigabit Ethernet ingress ports..

QoS > DiffServ Settings > Edit Policy Element

Policing is based on a token bucket, where bucket depth (that is, the maximum burst before the bucket overflows) is by specified the“Burst”field, and the average rate tokens are removed from the bucket is by specified by the “Rate” option..

After using the policy map to define packet classification, service tagging, and bandwidth policing, it must be assigned to a specific interface by a service policy to take effect..

Policy name  The name of the policy map.. (Range: 1-32 characters for the name)

Description  A brief description of the Policy.. (Range 1- 256 characters for the description)

Click Add to create a new policy, or select a policy and click“Edit Policy Element”to change the policy rules of the selected policy, or Remove Policy to delete the policy..

Class Name  Name of class map.. Use the drop-down menu to select a different policy..

Action  Configures the service provided to ingress traffic by setting a CoS, DSCP, or IP Precedence value in a matching packet.. (Range - CoS: 0-7, DSCP: 0-63, IP Precedence: 0-7)

Enable Meter  Check this to define the maximum throughput, burst rate, and the action that results from a policy violation..

Rate (kbps)  Rate in kilobits per second.. (Range: 1- 100000 kbps or maximum port speed, whichever is lower)

Burst (byte)  Burst in bytes.. (Range: 64-1522)

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

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Cisco Systems SRW248G4P manual Policy Map

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.