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Catalyst 2960 Switch SoftwareConfiguration Guide
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Chapter1 Overview
Features
Guest VLAN to provide limited services to non-IEEE 802. 1x-compliant users
IEEE 802.1x accounting to track network usage
TACACS+, a proprietary feature for managing network security through a TACACS server
RADIUS for verifying the identity of, granting access to, and tracking the actions of remote users
through authentication, authorization, and accounting (AAA) services
SecureSocket Layer (SSL) Version 3.0 support for the HTTP1.1 server authentication, encryption,
and message integrity, and HTTP client authentication to allow secure HTTP communications
(requires the cryptographic version of the software)
QoS and CoS Features
Automatic QoS (auto-QoS) to simplify the deployment of existing QoS features by classifying
traffic and configuring egress queues
Classification
IP type-of-service/Differentiated Services Code Point (IP ToS/DSCP) and IEEE 802.1p CoS
marking priorities on a per-port basis for protecting the performa nce of mission-critical
applications
IP ToS/DSCP and IEEE 802.1p CoS marking based on 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, al lowing for differentiated service
levels for different types of network traffic and for prioritizing mission-critical traffic in the
network
Trusted port states (CoS, DSCP, and IP precedence) within a QoS domain and with a port
bordering another QoS domain
Trusted boundary for detecting the presence of a Cisco IP Phone, trusting the CoS value
received, and ensuring port security
Policing
Traffic-policing policies on the switch port for managing how much of the port bandwidth
should be allocated to a specific traffic flow
Aggregate policing for policing traffic flows in aggregate to restrict specific applications or
traffic flows to metered, predefined rates
Out-of-Profile
Out-of-profile markdown for packets that exceed bandwidth utilization limits
Ingress queueing and scheduling
Two configurable ingress queues for user traffic (one queue can be the priority queue)
Weighted tail drop (WTD) as the congestion-avoidance mechanism for managing the queue
lengths and providing drop precedences for different traffic classifications
Shaped round robin (SRR) as the scheduling service for specifying the rate at which packets are
sent to the internal ring (sharing is the only supported mode o n ingress queues)