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Cisco Systems OL-4266-08 Supported Policy Feature Cards, Supported Distributed Forwarding Cards

Models: OL-4266-08

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Chapter 42 Configuring PFC QoS

Understanding How PFC QoS Works

Supported Policy Feature Cards

The policy feature card (PFC) is a daughter card that resides on the supervisor engine. The PFC provides QoS in addition to other functionality. The following PFCs are supported on the Cisco 7600 series routers:

•PFC2 on the Supervisor Engine 2

•PFC3A on the Supervisor Engine 720

•PFC3B on the Supervisor Engine 720 and Supervisor Engine 32

•PFC3BXL on the Supervisor Engine 720

Supported Distributed Forwarding Cards

The PFC sends a copy of the QoS policies to the distributed forwarding card (DFC) to provide local support for the QoS policies, which enables the DFCs to support the same QoS features that the PFC supports.

The following DFCs are supported on the Cisco 7600 series routers:

•WS-F6K-DFC, for use on dCEF256 and CEF256 modules with a Supervisor Engine 2.

•WS-F6K-DFC3A, WS-F6K-DFC3B, WS-F6K-DFC3BXL, for use on dCEF256 and CEF256 modules with a Supervisor Engine 720.

•WS-F6700-DFC3A, WS-F6700-DFC3B, WS-F6700-DFC3BXL, for use on CEF720 modules with a Supervisor Engine 720.

PFC and DFC QoS Feature List and Flowchart

Table 42-1lists the QoS features supported on the different versions of PFCs and DFCs.

Table 42-1 QoS Features Supported on PFCs and DFCs

 

Feature

 

PFC2/DFC

PFC3A/DFC3A

PFC3B/DFC3B

PFC3BXL/DFC3BXL

 

 

 

 

 

 

 

 

 

 

Support for DFCs

 

Yes

Yes

Yes

Yes

 

 

 

 

 

 

 

 

 

 

Flow granularity

 

Full flow

Source

Source

Source

 

 

 

 

 

Destination

Destination

Destination

 

 

 

 

 

 

 

 

 

 

QoS ACLs

 

IP, IPX, MAC

IP, MAC

IP, MAC

IP, MAC

 

 

 

 

 

 

 

 

 

 

DSCP transparency

 

No

Optional

Optional

Optional

 

 

Note Enabling DSCP transparency disables

 

 

 

 

 

 

 

 

 

egress ToS rewrite.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Egress ToS rewrite

 

Mandatory

Optional

Optional

Optional

 

 

 

 

 

 

 

 

 

 

 

 

Policing:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ingress aggregate policers

 

Yes

Yes

Yes

Yes

 

 

 

 

 

 

 

 

 

 

Egress aggregate policers

 

No

Yes

Yes

Yes

 

 

 

 

 

 

 

 

 

 

 

 

Number of aggregate policers

 

1022

1022

1022

1022

 

 

 

 

 

 

 

 

 

 

 

 

Microflow policers

 

64 rates

64 rates

64 rates

64 rates

 

 

 

 

 

 

 

 

 

 

 

 

Number of flows per Microflow policer

 

32,000

64,000

110,000

240,000

 

 

 

 

 

 

 

 

 

 

 

 

Unit of measure for policer statistics

 

Packets

Bytes

Bytes

Bytes

 

 

 

 

 

 

 

 

 

 

Basis of policer operation

 

Layer 3 length

Layer 2 length

Layer 2 length

Layer 2 length

 

 

 

 

 

 

 

 

 

 

 

 

 

Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OL-4266-08

 

 

 

 

 

 

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Cisco Systems OL-4266-08 manual Supported Policy Feature Cards, Supported Distributed Forwarding Cards, 42-9
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OL-4266-08 specifications

Cisco Systems OL-4266-08 is a robust and versatile certification that focuses on the essentials of implementing and troubleshooting Cisco collaborations solutions. As enterprises increasingly rely on unified communications, having professionals who are knowledgeable in the latest Cisco technologies becomes a necessity. This certification is part of the Cisco Certified Network Associate (CCNA) program, which serves as a foundational stepping stone for individuals aspiring to build a career in networking and collaboration technologies.

One of the main features of OL-4266-08 is its emphasis on collaboration foundations, which includes an understanding of voice, video, messaging, and conferencing technologies. Professionals who obtain this certification demonstrate proficiency in deploying, configuring, and troubleshooting Cisco collaboration solutions like Cisco Unified Communications Manager and Cisco Webex. This knowledge is critical as businesses seek to enhance communication and productivity through integrated systems.

Technologically, OL-4266-08 covers a wide array of essential concepts, including IP telephony, voicemail, and collaborative tools. Candidates learn about the architecture of unified collaboration systems, involving integration with routing and switching networks. Additionally, it delves into security protocols to ensure secure transmissions of voice and video data, thereby protecting sensitive corporate communication.

In terms of characteristics, OL-4266-08 is designed to be both comprehensive and practical. The certification emphasizes hands-on experience, which is essential for understanding real-world applications of Cisco technologies. The coursework provides extensive exposure to simulations and labs that mimic actual network environments. This hands-on approach enables candidates to troubleshoot issues effectively using Cisco's troubleshooting tools and methodologies.

Moreover, the certification aligns with industry standards, ensuring that individuals gain relevant and in-demand skills. Given the evolving landscape of network technologies, OL-4266-08 prepares individuals for future growth and specialization in various areas, including cloud collaboration and Internet of Things (IoT) communications.

In conclusion, Cisco Systems OL-4266-08 equips networking professionals with the necessary skills to implement and support Cisco collaboration solutions. The focus on hands-on experience, along with in-depth coverage of technology and security protocols, makes it a valuable certification in the fast-paced world of network communications. With the rise of remote work and digital collaboration, this certification is pivotal for anyone looking to enhance their career in networking and technology.