Cisco 2950G 24 Software Configuration Guide - Page 38

Features Chapter 1 Overview Quality of Service and Class of Service • Classification - IEEE 802.1P class of service (CoS) with four priority queues on the switch 10/100 and LRE ports and eight priority queues on the Gigabit ports for prioritizing mission-critical and time-sensitive traffic from data, voice, and telephony applications - 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 (only available with the EI) - 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 (only available in the EI) - Support for IEEE 802.1P CoS scheduling for classification and preferential treatment of high-priority voice traffic - Trusted boundary (detect the presence of a Cisco IP phone, trust the CoS value received, and ensure port security. If the IP phone is not detected, disable the trusted setting on the port and prevent misuse of a high-priority queue.) • Policing - Traffic-policing policies on the switch port for allocating the amount of the port bandwidth to a specific traffic flow - Policing traffic flows to restrict specific applications or traffic flows to metered, predefined rates - Up to 60 policers on ingress Gigabit-capable Ethernet ports Up to six policers on ingress 10/100 ports Granularity of 1 Mbps on 10/100 ports and 8 Mbps on 10/100/1000 ports - Out-of-profile markdown for packets that exceed bandwidth utilization limits Note Policing is available only in the EI. • 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 Monitoring • Switch LEDs that provide visual port and switch status • Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) for traffic monitoring on any port or VLAN Note RSPAN is available only in the EI. • Four groups (history, statistics, alarms, and events) of embedded remote monitoring (RMON) agents for network monitoring and traffic analysis • MAC address notification for tracking the MAC addresses that the switch has learned or removed • Syslog facility for logging system messages about authentication or authorization errors, resource issues, and time-out events Catalyst 2950 Desktop Switch Software Configuration Guide 1-6 78-14982-01