Cisco PRE STANDARD 6500 VOICE CARD Specification Guide
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CISCO CATALYST 6500 SERIES CISCO EXPRESS FORWARDING 720 10-, 100-, AND 1000-MBPS ETHERNET-OVER-COPPER
MODULES
Designed for high-performance enterprise and service provider distribution, core layers, data-center, and Web-hosting applications where voice
capability is not required, Cisco Express Forwarding 720 twisted-pair interface modules provide line-rate 10/100/1000 Ethernet forwarding with the
following operational advantages (refer to Table 3):
•
Forwarding architecture—These modules use the central Cisco Express Forwarding engine located on the supervisor engine; optional field-
upgradable Distributed Cisco Express Forwarding daughter cards are available.
•
Forwarding performance—These modules forward packets up to 30 Mpps per system; they forward packets up to sustained 48 Mpps per slot for
slots equipped with distributed forwarding cards (DFC or DFC3).
•
Fabric connection—These modules connect to the switch-fabric channels using dual 20 Gbps switch-fabric channels (40 Gbps total).
•
Supervisor engine—These modules work with Supervisor Engine 720.
•
Distributed forwarding upgrade option—These modules help enable full locally distributed forwarding; they use an optional (part number WS-
F6700-DFC3) upgrade to operate with the Supervisor Engine 720, and they provide optimal interface module performance.
•
Slot and chassis requirements—These modules can occupy any slot in the Cisco Catalyst 6506, Catalyst 6509, Catalyst 6509-NEB, or Catalyst
6509-NEB-A; they require slots 9 through 13 when used in the Cisco Catalyst 6513. Cisco Catalyst 6503 support is under consideration for the
future (refer to release notes for details).
future (refer to release notes for details).
•
Maximum port density per chassis—These modules support up to 384 ports per Cisco Catalyst 6509, up to 240 Cisco Express Forwarding-based
ports, and an additional 336 classic or Cisco Express Forwarding 256-based ports per Cisco Catalyst 6513.
PoE is not supported on Cisco Express Forwarding 720 10/100/1000 interface modules.
Table 3. Cisco Express Forwarding 720 Copper 10/100/1000 Ethernet Interface Module
Product Number
Primary
Application
Ports, Connector,
Maximum Distance,
and Cable Type
PoE
Support
Maximum Frame
Size (jumbo
frame) Support
Queues per Port (Tx =
Transmit, Rx = Receive)*
Buffer Size
per Port
WS-X6748-GE-TX
Data center and
server farm
48, RJ-45, 100m,
Category 5 cable
No
Up to 9216 bytes
per frame
Tx-1p3q8t; Rx-1q8t
(when using Distributed
Cisco Express
Forwarding)
1.3 MB
* Queues Legend: 1p3q1t = 1 priority queue, 3 round robin queues, 1 threshold
Figure 1. Cisco Express Forwarding 720 10/100/1000 Interface Module (part number WS-X6748-GE-TX) with Distributed Cisco
Express Forwarding Daughter Card (part number WS-F6700-DFC3A)
CISCO CATALYST 6500 SERIES CISCO EXPRESS FORWARDING 256 10/100 AND 10/100/1000 INTERFACE MODULES
Designed for premier wiring closets, small campus backbone, and server farm applications, Cisco Express Forwarding 256 10/100 and 10/100/1000
Ethernet-over-copper interface modules provide line-rate 10/100 Ethernet forwarding and gigabit bandwidth options. (Refer to Table 4).