Datasheet
2-41
Catalyst 6500 Series Ethernet Modules Installation Guide
OL-6265-02
Chapter 2 Ethernet Switching Modules
10/100 and 10/100/1000 Ethernet Modules
WS-X6548-RJ-21 Ethernet Module
The WS-X6548-RJ-21 Ethernet module (Figure 2-15) provides 48 10/100-Mbps full- or half-duplex
ports. Table 2-34 lists the features and description of the module, and Table 2-35 lists the physical and
environmental specifications for the module.
Figure 2-15 WS-X6548-RJ-21 Ethernet Module Front Panel
Table 2-34 WS-X6548-RJ-21 Ethernet Module Features
Feature Description
Ports per module 48 ports
Connector type RJ-21
Cabling distance 328 ft (100 m) over Category 5, 5e, and 6 UTP/STP cable
Speed 10/100 IEEE 802.3 double-speed autonegotiation
Buffer size 1.116 MB per port
Maximum frame size Up to 1518 bytes per frame.
Supervisor engine support All module variants support all supervisor engines.
Queues per port
• Tx—1p3q8t
• Rx—1q2t
Chassis/slot restrictions No chassis or slot restrictions; the module can occupy any slot in any
Catalyst 6500 or Catalyst 6500-E chassis.
Bus connection 32-Gbps shared bus
Module upgrades available
PoE support Not available.
Distributed forwarding
support
Can be field-upgraded with either the WS-F6K-DFC,
WS-F6K-DFC3B, or WS-F6K-DFC3BXL daughter cards.
See the Catalyst 6500 Series DFC, DFC3A, DFC3B, and DFC3BXL
Installation Note for additional information and field upgrade
procedures.
See Appendix A for additional information on the DFC daughter cards.
Pluggable transceivers
support
Not supported.
63672
48 PORT 10/100 BASE-T
ETHERNET
SWITCHING MODULE
WS-X6548-RJ21
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