Cisco Systems 2960 manual QoS and Control Advanced QoS, Granular Rate Limiting

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Feature

Integrated Cisco IOS® Software Features for Bandwidth Optimization

Benefit

•Per-port broadcast, multicast, and storm control prevents faulty end stations from degrading overall systems performance.

•IEEE 802.1d Spanning Tree Protocol support for redundant backbone connections and loop-free networks simplifies network configuration and improves fault tolerance.

•PVST+ allows for Layer 2 load sharing on redundant links to efficiently use the extra capacity inherent in a redundant design.

•IEEE 802.1s Multiple Spanning Tree Protocol allows a spanning-tree instance per VLAN, enabling Layer 2 load sharing on redundant links.

•Egress committed rate (ECR) guarantee provides load balancing and redundancy.

•Local Proxy Address Resolution Protocol (ARP) works in conjunction with Private VLAN Edge to minimize broadcasts and maximize available bandwidth.

•VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link.

•VLAN Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks by flooding broadcast traffic only on trunk links required to reach the destination devices.

•Internet Group Management Protocol (IGMP) version 3 snooping provides fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors.

•IGMP filtering provides multicast authentication by filtering out no subscribers and limits the number of concurrent multicast streams available per port.

•Multicast VLAN registration (MVR) continuously sends multicast streams in a multicast VLAN while isolating e streams from subscriber VLANs for bandwidth and security reasons.

QoS AND CONTROL

Advanced QoS

• Standard 802.1p CoS and DSCP field classification are provided, using marking and reclassification on a per-

 

packet basis by source and destination IP address, source and destination MAC address, or Layer 4 TCP or

 

UDP port number.

 

• Cisco control-plane and data-plane QoS ACLs on all ports help ensure proper marking on a per-packet basis.

 

• Four egress queues per port enable differentiated management of up to four traffic types across the stack.

 

• SRR scheduling ensures differential prioritization of packet flows by intelligently servicing the ingress and

 

egress queues.

 

• Weighted tail drop (WTD) provides congestion avoidance at the ingress and egress queues before a disruption

 

occurs.

 

• Strict priority queuing guarantees that the highest-priority packets are serviced ahead of all other traffic.

 

• There is no performance penalty for highly granular QoS functions.

 

 

Granular Rate Limiting

• The Cisco CIR function guarantees bandwidth in increments as small as 1 Mbps.

 

• Rate limiting is provided based on source and destination IP address, source and destination MAC address,

 

Layer 4 TCP and UDP information, or any combination of these fields, using QoS ACLs (IP ACLs or MAC

 

ACLs), class maps, and policy maps.

 

• Asynchronous data flows upstream and downstream from the end station or on the uplink are easily managed

 

using ingress policing and egress shaping.

 

• Up to 64 aggregate or individual polices are available per Fast Ethernet or Gigabit Ethernet port.

 

 

SECURITY

 

 

 

Networkwide Security Features

•IEEE 802.1x allows dynamic, port-based security, providing user authentication.

•IEEE 802.1x with VLAN assignment allows a dynamic VLAN assignment for a specific user regardless of where the user is connected.

© 2005 Cisco Systems, Inc. All rights reserved.

Important notices, privacy statements, and trademarks of Cisco Systems, Inc. can be found on cisco.com.

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Contents Configurations Product OverviewGigabit Ethernet Intelligence in the NetworkEnhanced Security Availability and Scalability Advanced QOSManagement Superior Redundancy for Fault Backup Features and Benefits of Cisco Catalyst 2960 SeriesFeature Ease of Use and DeploymentNetworkwide Security Features QoS and Control Advanced QoSGranular Rate Limiting Feature Benefit VlanManageability Cisco NetworkCisco Catalyst 2960 Series Switch Hardware SpecificationDescription Description Specification Power Specifications for Cisco Catalyst 2960 Series Switch Management StandardsCisco Services and Support Programs Safety and ComplianceService and Support Service and Support Features BenefitsOrdering Information Part Numbers DescriptionCWDM-SFP-1570= CWDM-SFP-1530=CWDM-SFP-1550= CWDM-SFP-1590=
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2960 specifications

Cisco Systems 2960 series switches are a prominent solution in the networking landscape, known for their reliability, scalability, and feature-rich offerings. Ideal for small to medium-sized enterprises, these switches provide a robust foundation for network infrastructure, ensuring optimal performance and connectivity.

One of the standout features of the Cisco 2960 series is its Layer 2 switching capabilities. The switches support multiple VLANs (Virtual Local Area Networks), allowing network administrators to segment traffic efficiently and enhance security protocols. This is crucial in modern networks where managing traffic and isolating sensitive information is a priority.

The Cisco 2960 series also incorporates advanced Quality of Service (QoS) features, enabling the prioritization of critical applications and services. This functionality ensures that time-sensitive data, such as voice and video traffic, maintains a high quality of service even in congested networks. With support for IEEE 802.1p and DSCP marking, administrators can fine-tune their network performance to meet specific organizational needs.

Power over Ethernet (PoE) is another significant characteristic of the Cisco 2960 series. This feature allows switches to deliver electrical power alongside data over Ethernet cables to devices such as IP phones, wireless access points, and surveillance cameras. With PoE, organizations can reduce clutter from power cables and increase deployment flexibility for various devices.

In terms of security, the Cisco 2960 series is equipped with a range of integrated security features. The switch supports port security, 802.1X authentication, and Access Control Lists (ACLs), providing robust defenses against unauthorized access and potential network vulnerabilities. These security measures are essential for protecting sensitive data and ensuring compliance with industry regulations.

Moreover, the Cisco 2960 series offers enhanced network management capabilities with Cisco's Intelligent Network Services. This includes support for Simple Network Management Protocol (SNMP), Cisco Prime, and Embedded Event Manager (EEM), allowing for efficient monitoring, troubleshooting, and policy enforcement across the network.

Additionally, the Cisco 2960 switches provide various models and configurations, catering to different networking needs. Options include models with varying port densities, uplink configurations, and stacking capabilities, making it easy for organizations to choose solutions that align perfectly with their requirements.

In summary, the Cisco 2960 series is a versatile and essential component of modern networking environments. Its advanced features, including Layer 2 support, QoS, PoE, robust security, and diverse management tools, make it an excellent choice for organizations looking to build a strong and secure network infrastructure.
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