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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 WS-X6704-10GE WS-X6708-10G-3C
WS-X6708-10G-3CXL
Ports 4 8
Optics XENPAK X2
Switch fabric connection 40 Gbps
(80 Gbps full duplex)
40 Gbps
(80 Gbps full duplex)
Forwarding engine Default: centralized forwarding (CFC)
Optional: distributed forwarding with DFC3A,
DFC3B, or DFC3BXL
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
Queues RX: 8q8t
TX: 1p7q8t
RX: 8q4t
TX: 1p7q4t
Queuing mechanisms Class of service (CoS)-based queue mapping CoS-based queue mapping
Differentiated services code point (DSCP)-based queue
mapping
Scheduler Deficit Weighted Round Robin (DWRR) DWRR and Shaped Round Robin (SRR)
Port buffers 16 MB per port 200 MB per port
Jumbo frame support for bridged
and routed packets
Up to 9216 bytes Up to 9216 bytes
Maximum port density 32 ports (9-slot chassis) 64 ports (9-slot chassis)
Supervisor engines supported Supervisor Engine 720 Supervisor Engine 720
Chassis supported 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
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
Slot requirements 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
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
Onboard memory 256 MB default, upgradable to 512 MB or 1 GB 1 GB default
(19 pages)
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