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Catalyst 2950 Desktop Switch Software Configuration Guide
78-11380-03
Chapter 1 Overview
Features
Security
• Bridge Protocol Data Unit (BPDU) Guard for shutting down a Port Fast-configured port when an invalid configuration
occurs
• Protected port option for restricting the forwarding of traffic to designated ports on the same switch
• Password-protected access (read-only and read-write access) to management interfaces (CMS and CLI) for protection
against unauthorized configuration changes
• Multilevel security for a choice of security level, notification, and resulting actions
• MAC-based port-level security for restricting the use of a switch port to a specific group of source addresses and
preventing switch access from unauthorized stations
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• Terminal Access Controller Access Control System Plus (TACACS+), a proprietary feature for managing network
security through a TACACS server
• 802.1X port-based authentication to prevent unauthorized devices from gaining access to the network
• Standard and extended IP access control lists (ACLs) for defining security policies
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Quality of Service and Class of Service
Classification
•
IP Differentiated Services Code Point (IP DSCP) and class of service (CoS) marking priorities on a per-port basis for
protecting the performance of mission-critical applications
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• Flow-based packet classification (classification based on information in the MAC, IP, and TCP/UDP headers) for
high-performance quality of service at the network edge, allowing for differentiated service levels for different types of
network traffic and for prioritizing mission-critical traffic in the network
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• Support for IEEE 802.1P CoS scheduling for classification and preferential treatment of high-priority voice traffic
Policing
• Traffic-policing policies on the switch port for allocating the amount of the port bandwidth to a specific traffic flow
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• Policing traffic flows to restrict specific applications or traffic flows to metered, predefined rates
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• Up to 60 policers on ingress Gigabit-capable Ethernet ports
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Up to six policers on ingress 10/100 ports
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Granularity of 1 Mbps on 10/100 ports and 8 Mbps on 10/100/1000 ports
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• Out-of-profile markdown for packets that exceed bandwidth utilization limits
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Egress Policing and Scheduling of Egress Queues
•
Four egress queues on all switch ports. Support for strict priority and weighted round-robin (WRR) CoS policies
Table 1-1 Features (continued)
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