Specification :

CISCO Catalyst 2960 WS-C2960G-24TC-L 10/ 100/ 1000Mbps Switch 20 Ethernet 10/ 100/ 1000 ports and 4 dual-purpose uplinks Up to 8000 MAC Address Table 64 MB DRAM 32 MB flash memory Buffer Memory
Model
Brand
CISCO
Series
Catalyst 2960
Model
WS-C2960G-24TC-L
Spec
Standards
IEEE 802.1s
IEEE 802.1w
IEEE 802.1x
IEEE 802.3ad
IEEE 802.3ah ( 100BASE-X single/ multimode fiber only)
IEEE 802.3x full duplex on 10BASE-T, 100BASE-TX, and 1000BASE-T ports
IEEE 802.1D Spanning Tree Protocol
IEEE 802.1p CoS Prioritization
IEEE 802.1Q VLAN
IEEE 802.3 10BASE-T specification
IEEE 802.3u 100BASE-TX specification
IEEE 802.3ab 1000BASE-T specification
IEEE 802.3z 1000BASE-X specification
Jumbo Frames
Yes
Ports
20 Ethernet 10/ 100/ 1000 ports and 4 dual-purpose uplinks
Speed
10/ 100/ 1000Mbps
MAC Address Table
Up to 8000
Buffer Memory
64 MB DRAM
32 MB flash memory
Security
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.
IEEE 802.1x with voice VLAN permits an IP phone to access the voice VLAN irrespective of the authorized or unauthorized state of the port.
IEEE 802.1x and port security are provided to authenticate the port and manage network access for all MAC addresses, including those of the client.
IEEE 802.1x with Guest VLAN allows guests without 802.1x clients to have limited network access on the guest VLAN.
Port-based ACLs for Layer 2 interfaces allow application of security policies on individual switch ports.
Unicast MAC filtering prevents the forwarding of any type of packet with a matching MAC address.
Unknown unicast and multicast port blocking allows tight control by filtering packets that the switch has not already learned how to forward.
SSHv2 and SNMPv3 provide network security by encrypting administrator traffic during Telnet and SNMP sessions. SSHv2 and the cryptographic version of SNMPv3 require a special cryptographic software image because of U.S. export restrictions.
Bidirectional data support on the Switched Port Analyzer ( SPAN) port allows the CISCO Secure intrusion detection system ( IDS) to take action when an intruder is detected.
TACACS+ and RADIUS authentication enable centralized control of the switch and restrict unauthorized users from altering the configuration.
MAC address notification allows administrators to be notified of users added to or removed from the network.
DHCP snooping allows administrators to ensure consistent mapping of IP to MAC addresses. This can be used to prevent attacks that attempt to poison the DHCP binding database, and to rate-limit the amount of DHCP traffic that enters a switch port.
Cabling
10BASE-T ports: RJ-45 connectors, two-pair Category 3, 4, or 5 unshielded twisted-pair ( UTP) cabling
100BASE-TX ports: RJ-45 connectors, two-pair Category 5 UTP cabling
1000BASE-T ports: RJ-45 connectors, four-pair Category 5 UTP cabling
1000BASE-T SFP-based ports: RJ-45 connectors, four-pair Category 5 UTP cabling
1000BASE-SX, -LX/ LH, -ZX, -BX and CWDM SFP-based ports: LC fiber connectors ( single/ multimode fiber)
100BASE-LX, -BX, -FX: LC fiber connectors ( single/ multimode fiber)
LEDs
Per-port status: Link integrity, disabled, activity, speed, full-duplex
System status: System, RPS, link status, link duplex, link speed
VLAN Support
Yes
Power
+ 12V at 10.5A
Dimensions
17.5" x 12.9" x 1.7"
Weight
10.0 lbs.
Temperature
0º C to 45º C ( 32º F to 113º F)
Humidity
10 to 85% ( noncondensing)
Features
Features
Availability and Scalability:
Superior Redundancy for Fault Backup
Integrated CISCO IOS Software Features for Bandwidth Optimization

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
Packaging
Package Contents
WS-C2960G-24TC-L
Manual
Power Cord
Rack mount kit
Cable