Cisco CATALYST 6500 24 PORT SFP GBIC MODULE Specification Guide
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Primary
Applications
Product Number
Interface
Module Class
Ports/Optics
Interface Type
Queues per Port
(Tx = Transmit,
Rx = Receive)*
Scheduler
Buffer Size per
Port
Base server farm
WS-X6408A-GBIC
Classic
8, GBIC
•
Tx-1p2q2t
•
Rx-1p1q4t
WRR
512 KB
* Queues Legend: 1p2q2t= 1 priority queue, 2 round robin queues, 2 thresholds
Superior Traffic Management and Queuing Characteristics of Catalyst 6500 series Gigabit Ethernet Modules
The Cisco Catalyst 6500 Series Gigabit Ethernet modules support multiple queues per port for Quality of Service. Each port supports Weighted
Random Early Detection (WRED) for congestion avoidance within each queue, and Weighted Round Robin (WRR) for scheduling between queues
and a strict priority queue for voice traffic. Additionally, multiple thresholds can be configured to manage differentiated levels of service.
Ideal for handling mission-critical, bursty, or low latency traffic such as enterprise resource planning (ERP) or voice applications, these interface
modules, including the CEF720-based WS-X6724-SFP, scale network performance and intelligent services. These modules also feature transmit and
receive packet buffers and a strict priority transmit queue.
Cisco EtherChannel Technology—Increases Link Resiliency and Provides Scalable Bandwidth Aggregation
The Catalyst 6500 can aggregate up to eight physical Fast Ethernet, Gigabit Ethernet or 10Gigabit Ethernet links into a single virtual link using
Cisco’s Port Aggregation Protocol (PAgP) or IEEE 802.3ad technology. This provides network managers a reliable high-speed solution for the
campus network backbone.
The Cisco Catalyst 6500 Series also supports multimodule channeling technology, providing even greater resiliency by creating channels across ports
on separate modules in the same chassis. As a result, connectivity is maintained even if one module (and corresponding ports) fails. This is ideal for
deployments requiring scalable, flexible bandwidth within the network. An additional benefit of Cisco EtherChannel capabilities include automatic
recovery and redistribution of loads across remaining links; easing management; and making the technology transparent to network applications.
The same Cisco EtherChannel technology can be used across Cisco Systems industry-leading 10-Gigabit Ethernet modules, providing increased
aggregation as well as resiliency against link failure.
GIGABIT ETHERNET INTERFACE MODULE SWITCH FABRIC AND FORWARDING CHARACTERISTICS
The Cisco Catalyst 6500 Classic, CEF256, dCEF256 and CEF720 interface modules provide Gigabit Ethernet with a choice of speeds and
forwarding rates.
Feature
WS-X6416-GBIC, WS-
X6408A-GBIC
WS-X6516A-GBIC, WS-
X6516-GBIC
WS-X6816-GBIC
WS-X6748-SFP, WS-
X6724-SFP
Supervisor Engine
Supported
•
Supervisor Engine 1A
•
Supervisor Engine 2
•
Supervisor Engine
720
•
Supervisor Engine 1A
•
Supervisor Engine 2
•
Supervisor Engine 720
•
Supervisor Engine 2,
(with SFM or SFM2)
•
Supervisor Engine 720
•
Supervisor Engine 720