Datasheet

Data Sheet
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Primary Features and Benefits
Table 1 summarizes primary features and benefits of the Cisco Catalyst 6500 Series 10 Gigabit
Ethernet modules.
Table 1. Cisco Catalyst 6500 Series 10 Gigabit Ethernet Modules Primary Features Comparison
Feature WS-X6704-10GE WS-X6708-10G-3C
WS-X6708-10G-3CXL
WS-X6716-10G-3C
WS-X6716-10G-3CXL
Ports 4 8 16
Optics XENPAK X2 X2
Switch Fabric
Connection
40 Gbps (80 Gbps full
duplex)
40 Gbps (80 Gbps full
duplex)
40 Gbps (80 Gbps full
duplex)
Oversubscription 1:1 2:1 4:1
Forwarding Engine
●
Default: centralized
forwarding (CFC)
●
Optional: distributed
forwarding with
DFC3A, DFC3B,
DFC3BXL, DFC3C, or
DFC3CXL
●
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
●
WS-X6716-10G-3C:
equipped with DFC3C for
distributed forwarding,
supporting 256K routes
●
WS-X6716-10G-3CXL:
equipped with DFC3CXL
for distributed forwarding,
supporting 1M routes
Queues
●
RX: 8q8t
●
TX: 1p7q8t
●
RX: 8q4t
●
TX: 1p7q4t
Oversubscription mode:
●
RX: 1p7q2t per port
●
TX: 1p7q4t per port group
Performance mode:
●
RX: 8q4t per port
●
TX: 1p7q4t per port
Queuing Mechanisms
●
Class of service
(CoS)-based queue
mapping
●
CoS-based queue
mapping
●
Differentiated services
code point (DSCP)-
based queue mapping
●
CoS-based queue
mapping
●
DSCP-based queue
mapping
Scheduler Deficit Weighted Round
Robin (DWRR)
Weighted Random Early
Detection (WRED)
DWRR
WRED
Shaped Round Robin
(SRR) at egress
Oversubscription mode:
●
DWRR
●
WRED
Performance mode:
●
DWRR
●
WRED
●
SRR at egress
Port Buffers 16 MB per port 200 MB per port Oversubscription mode:
90 MB per port group
Performance mode:
200 MB per port
Hardware-Based
Multicast Replication
Ingress and egress
~20G per replication
engine
2 replication engines per
module
Ingress and egress
~50G per replication
engine
2 replication engines per
module
Ingress and egress
~50G per replication engine
2 replication engines per
module
Jumbo Frame
Support for Bridged
and Routed Packets
Up to 9216 bytes Up to 9216 bytes Up to 9216 bytes
Maximum Port
Density per Chassis
34 ports (9-slot chassis) 66 ports (9-slot chassis) 130 ports (9-slot chassis)
Maximum Port
Density per VSS
68 ports 132 ports 260 ports