Cisco Catalyst 2950 Datasheet

Cisco Systems, Inc.
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Feature
Benefit
Network-Wide Security
Features
continued
• IGMP Filtering provides multicast authentication by filtering out non-subscribers and
limits the number of concurrent multicast streams available per port.
• Support for dynamic VLAN assignment through implementation of VLAN Membership
Policy Server (VMPS) client functionality provides flexibility in assigning ports to
VLANs. Dynamic VLAN enables fast assignment of IP address.
• Cisco CMS Software Security Wizards ease the deployment of security features for
restricting user access to a server, a portion of the network or access to the network.
Quality of Service (QoS)
Overview
• The switches support the aggregate QoS model by enabling classification, policing/
metering, and marking functions on a per-port basis at ingress and queuing/
scheduling function at egress.
• The switches support configuring QoS ACPs on all ports to ensure proper policing and
marking on a per-packet basis using ACPs. Up to four ACPs per switch are supported in
configuring either QoS ACPs or security filters.
QoS Classification Support at Ingress
• The switches support QoS classification of incoming packets for QoS flows based on
Layer 2, Layer 3, and Layer 4 fields.
• The following Layer 2 fields or a combination can be used for classifying incoming
packets to define QoS flows: source MAC address, destination MAC address, 16-bit
Ethertype.
The switches support identification of traffic based on Layer 3 ToS field – DSCP values.
• The following Layer 3 and 4 fields or a combination can be used to classify incoming
packets to define QoS flows: source IP address, destination IP address, TCP source or
destination port number, UDP source or destination port number.
QoS Metering/Policing at Ingress
• Support for metering/policing of incoming packets restricts incoming traffic flows to a
certain rate.
• The switches support up to 6 policers per LRE port, and 60 policers on a Gigabit
Ethernet port.
• The switches offer granularity of traffic flows at 1 Mbps on LRE ports, and 8 Mbps on
Gigabit Ethernet ports.
QoS Marking at Ingress
• The switches support marking/re-marking packets based on state of policers/meters.
• The switches support marking/re-marking based on the following mappings: from
DiffServ Code Point (DSCP) to 802.1p, and 802.1p to DSCP.
• The switches support 14 well-known and widely used DSCP values.
• The switches support classifying or reclassifying packets based on default DSCP per
port. Also support classification based on DSCP-values in ACL.
• The switches support classifying or reclassifying frames based on default 802.1p value
per port.
• The switches support 802.1p override at ingress.
QoS Scheduling Support at Egress
•Four queues per egress port are supported in hardware.
• The Weighted Round Robin (WRR) queuing algorithm ensures that low-priority queues
are not starved.
• Strict-priority queue configuration via Strict Priority Scheduling ensures that
time-sensitive applications such as voice always follow an expedited path through the
switch fabric.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz