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APPLICATIONS
8-port 10 Gigabit Ethernet module: server aggregation, LAN access uplinks aggregation, and links to and between core, where high-density
10 Gigabit Ethernet is required.
4-port 10 Gigabit Ethernet module: core, interbuilding connections, points of presence (POPs), WAN edge, and MAN connections, where
medium to low 10 Gigabit Ethernet density is required.
See 10 Gigabit Ethernet Switching for Enterprises white paper for more details:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_white_paper0900aecd802a648b.shtml
KEY FEATURES AND BENEFITS
Table 1.
Cisco Catalyst 6500 Series 10 Gigabit Ethernet Modules Key Features Comparison
Feature
Ports
Optics
Switch fabric connection
Forwarding engine
Queues
Queuing mechanisms
Scheduler
Port buffers
Jumbo frame support for bridged
and routed packets
Maximum port density
Supervisor engines supported
Chassis supported
Slot requirements
Onboard memory
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WS-X6704-10GE
4
XENPAK
40 Gbps
(80 Gbps full duplex)
Default: centralized forwarding (CFC)
Optional: distributed forwarding with DFC3A,
DFC3B, or DFC3BXL
RX: 8q8t
TX: 1p7q8t
Class of service (CoS)-based queue mapping
Deficit Weighted Round Robin (DWRR)
16 MB per port
Up to 9216 bytes
32 ports (9-slot chassis)
Supervisor Engine 720
Any Catalyst 6500 E-Series chassis, C6509-NEB-
A chassis, non-E-Series chassis with Fan Tray 2,
or Cisco 7600 chassis (NEBS compliant: operating
temperature up to 55° C)
Not supported in Catalyst 6503 non-E Series
chassis
Can occupy any slot in any Cisco Catalyst 6503-E,
6504-E, 6506, 6506-E, 6509, 6509-E, 6509-NEB-
A, Cisco 7604, 7607, 7609 chassis; can only
occupy slots 9 through 13 in a Cisco Catalyst 6513
or Cisco 7613 chassis
256 MB default, upgradable to 512 MB or 1 GB
WS-X6708-10G-3C
WS-X6708-10G-3CXL
8
X2
40 Gbps
(80 Gbps full duplex)
WS-X6708-10G-3C: equipped with DFC3C for distributed
forwarding, supporting 256K routes
WS-X6708-10G-3CXL: equipped with DFC3CXL for
distributed forwarding, supporting 1M routes
RX: 8q4t
TX: 1p7q4t
CoS-based queue mapping
Differentiated services code point (DSCP)-based queue
mapping
DWRR and Shaped Round Robin (SRR)
200 MB per port
Up to 9216 bytes
64 ports (9-slot chassis)
Supervisor Engine 720
Any Catalyst 6500 E-Series chassis, including 6503-E,
6504-E, 6506-E, 6509-E, and C6509-NEB-A chassis, or the
Cisco 7604 and 7609 chassis (NEBS compliant: operating
temperature up to 55° C)
Or
Non-E-Series chassis with Fan Tray 2, including 6506,
6509, 6513, or the Cisco 7606 and 7613 chassis (non-
NEBS compliant: operating temperature up to 40° C)
Not supported in Catalyst 6503 non-E Series chassis
Can occupy any slot in any Cisco Catalyst 6503-E, 6504-E,
6506, 6506-E, 6509, 6509-E, 6509-NEB-A, Cisco 7604,
7606, 7609 chassis; can only occupy slots 9 through 13 in a
Cisco Catalyst 6513 or Cisco 7613 chassis
1 GB default
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