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36 x 10/100Base-TX

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WS-X5239-RJ21 REF
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Additional Information

Manufacturer CISCO
Manufacturer Part Number WS-X5239-RJ21
SKU GROUP-213677
Ethernet Technology Fast Ethernet
Marketing Information A variety of switched Ethernet and Fast Ethernet modules enable high-performance desktop connectivity with support for value-added features including multicast, protocol filtering, and quality of service (QoS). With the Catalyst 5000 Family, Cisco provides a cost-effective, switched Ethernet and 10/100 alternative to shared hubs in the wiring closet.
Description 36 x 10/100Base-TX
Application/Usage Switching Network
Height 1.2"
Width 14.4"
Depth 16"
Compatibility Catalyst 5000 and 5500 Family switches
Product Name Catalyst Switching Module
Interfaces/Ports Details
  • 3 x RJ-21 Connector
  • 36 x Port 10/100Base-TX LAN
Limited Warranty 90
Maximum Data Transfer Rate 100 Mbit/s
Maximum Distance Supported 328 ft
Alt Part No WSX5239RJ21
Network Technology 10/100Base-TX
Product Type Switching Module
Additional Information
  • Frame Processing:
  • Transparent bridging (802.1d)
  • Key Feature Summary:
  • Broadcast Suppression
  • ISL
  • 802.IQ/P
  • Ether- Channel
  • Inline Rewrite
  • 802.3x Flow Control
  • WRED
  • Features:
  • IGMP snooping for fast joins and leaves on multicast groups
  • Protocol filtering to minimize unnecessary traffic by protocol type (such as block IPX and SAP and RIP broadcasts for IP-only clients)
  • Port security to control access and keep unauthorized users off the network
  • Dynamic VLANs for automatic VLAN assignment based on user login identity or host MAC address
  • QoS with trilevel priority queues on the switching backplane
  • Supports any combination of switching modules; modules can be hot-swapped or added as needed without resetting the switch
  • Connectivity from switched Ethernet and Fast Ethernet to Fiber Distributed Data Interface (FDDI), Gigabit Ethernet, and ATM backbones
  • Wire-speed performance on the Ethernet and Fast Ethernet interfaces
  • Superior traffic management with large interface buffers to accommodate bursty traffic
  • Four groups of RMON on each port
  • Supports multiple active MAC addresses (up to 16,000) per port
  • Supports spanning-tree algorithm on logical VLANs for fault-tolerant connectivity
  • Capability for any backbone Fast Ethernet interface to support up to 1000 VLANs between Catalyst 5000 Family switching platforms and Cisco routers
  • Supports broadcast, multicast, and unicast suppression
  • Supports IEEE 802.3u autonegotiation process that allows the switch to negotiate speed (10 or 100 Mbps) or duplex mode (half or full duplex) with an attached device
  • Autosenses speed and duplex mode if the attached device does not negotiate with the switch
  • Uplink fast convergence for rapid STP convergence on wiring closet uplinks
  • Backbone fast convergence for optimum STP convergence in backbone
Shipping Weight (Approximate) 19 lb
SKU UNSPSC 43222600
SKU UPC 7.46E+11
Twisted Pair Cable Standard Category 5


36 x 10/100Base-TX

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