Product
Description: Cisco Systems Catalyst 6500 Switch Series
48-Port 10/100/1000 Gigabit Ethernet Module, with switch
fabric enabled.
The Cisco Systems WS-X6748-GE-TX network module is part
of the highly-acclaimed, and highly proficient Catalyst
6500 Switch Series - and this module has withstood the
test of time by continuing to be one of the top popular
switch fabric modules of Cisco Catalyst 6500 Series purchasing
departments.
This high-performance 48-port 10/100/1000 Mbps (Mega
Bits Per Second) Ethernet over Copper Module,
WS-X6748-GE-TX, is the ultmiate module for Enterprise
and Service Providers

WS-X6748-GE-TX Ideal For Data Centers
As the premier modular multilayer Cisco switch for integrated
data center switching, the Cisco Catalyst 6500 Series
now provides a new, high-performance 48-port 10/100/1000
Ethernet over copper module designed exactly for utilization
with the Cisco Catalyst 6500 Series Supervisor Engine
720 in data center environments and distribution layer
deployments.
The WS-X6748-GE-TX provides a 40-Gbps (Giga Bit Per Second)
interconnection to the Cisco Catalyst 6500 Series Supervisor
Engine 720's switch fabric. It is quite perfect for high-demand,
high-density Gigabit Ethernet requirements over all 48
10/100/1000 ports.

Other Key Features of the WS-X6748-GE-TX include:
· Up to 386 high-performance 10/100/1000 Ethernet
over copper ports in a single Cisco Catalyst 6500 Series
chassis
· Flexible, scalable, field-upgradable daughter
card options to support full locally distributed forwarding
through the DFC3A for ROI (return on investment) protection
and "pay as you grow" type of performance
· Jumbo frame support, up to 9000 bytes, regularly
required in data centers.
· RJ-45 interfaces to support existing copper cabling
infrastructures
· Future support for an integrated time-domain
reflectometer for cable fault detection and ease of troubleshooting

Note: This module is supported only on the Cisco Catalyst
6500 Series Supervisor Engine 720 running Cisco Catalyst
OS Version 8.1.2 or Cisco IOS® Software Release 12.2(17a)SX
(available in the next few months) and future software
releases.
Originally, the CEF720 interface modules, for example,
WS-X67xx were supported only on the following chassis:
Cisco Catalyst 6506, 6509, and 6513. Support for the Cisco
Catalyst 6503 is still under consideration by Cisco Systems
for a future software release. Please consult the Cisco
Catalyst OS or Cisco IOS software release notes for more
information located on the IOS of your switch, once you
console in.

NOTE: The improper installation of the WS-F6700-DFC3A(=),
WS-F6700-DFC3B(=), or WS-F6700-DFC3BXL daughter module
cards on a WS-X6748-GE-TX could result in damage to the
distributed forwarding daughter card (DFC) and possible
permanent malfunction.

The WS-X6748-GE-TX can utilize Cisco Catalyst OS 8.1.2
for Supervisor 720 Engines. There is also a future 12.2(17a)SX
release for Supervisor 720 that is available now from
Cisco Systems. The primary, practical application location
for the 6748 is either a data center or a server farm.
The maximum distance in cable is 100 meters with Cat5
(Category 5) cable. The Maximum Frame Size (jumbo frame)
Support is op to 9216 bytes per frame, which managed correctly
can support a lot of data.

The queues per port on the WS-X6748-GE-TX are (Tx = Transmit,
Rx = Receive), or Tx-1p3q8t; Rx-1q8t (when utilizing the
Distributed Cisco Express Forwarding module). Also, the
buffer size per port is 1.3 MB (Mega bytes). It is field-upgradable
to assist distributed forwarding with the compliment of
the distributed forwarding daughter card (Cisco Part Number:
WS-F6700-DFC3A=).

Technical Notes for the Cisco WS-X6748-GE-TX. Firstly,
always make sure that your 48-Port module is seated all
the way into the backplane, or you will not receive connectivity
or power. Also, make sure that the 6748 is placed in the
correct slot of the 6500 series chassis that you are installing
it in. Depending on the Catalyst 6500 series switch chassis
you are using, either one or two backplane slots will
be for management blades or management modules, like the
WS-SUP720-3BXL. You can easily look at the backplane and
see which slots take management blades and which take
non-supervisory modules.
Also, if you, as the network administrator, desire to
verify that all RJ-45 ports are working, you can easily
set up a circuit loop to check and see if data can be
sent through the port and you can establish the working
port, and program it in command line of the router whether
you want the port on or off, or even in auto-switching
mode to auto-change from 10 to 100 to 1000 bps (bits per
second).