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Cisco Wide Area Application Services (WAAS) Software

Cisco Wide Area Application Services Web Cache Communication Protocol Redirection: Cisco Router Platform Support

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What You Will Learn

Cisco® Wide Area Application Services (WAAS) relies on network interception to receive packets from flows that should be optimized. Web Cache Communication Protocol Version 2 (WCCPv2) gives IT organizations a mechanism to transparently intercept and redirect this network traffic to a nearby Cisco WAAS device for application acceleration and WAN optimization. This document identifies the WCCP functions supported by various common Cisco routers and switches and provides recommended best practices for their use.

WCCP Platform Support

The following platforms are recommended for use with Cisco WAAS and the WCCP TCP promiscuous services:

• Cisco 890, 1900, 1800, 2800, 3800, 2900, and 3900 Series Integrated Services Routers (ISR)

• Cisco 3700, 7200 (NPE-400, NPE-G1, and NPE-G2 only), and 7600 Series Routers and Cisco ASR 1000 Series Aggregation Services Routers

• Cisco Catalyst® 3560 and 3750 Series Switches

• Cisco Catalyst 4500 (Sup2) and 4948 Series Switches

• Cisco Catalyst 6500 and 7600 Series Switches

• Cisco Nexus® 7000 Series Switches

The following platforms support WCCP, but their implementation is not compatible with Cisco WAAS:

• Catalyst 6500 Series Supervisor Engine 1A

• Cisco PIX® and Cisco ASA firewalls

• Cisco Catalyst 3550 Series Switch

The various WCCP-supported Cisco routers and switches are listed in Table 1. Each device supports a set of features and capabilities. Where there is a choice of features, the recommended feature is shown in Bold. Each device is listed with a minimum recommended Cisco IOS® Software release.

Table 1. WCCP Platform Support (Recommendations Shown in Bold)

Function Platform

Assignment

Redirect

Forwarding Redirect List

Direction

Return

Cisco IOS Software (Minimum Recommended)

Cisco Catalyst 7600 Series

Hash or mask

Generic routing encapsulation (GRE) or Layer 2

Full extended access control list (ACL)

In or out

GRE, Generic GRE, or IP forward
• Release 12.2(18)SXF16
• Release 12.3(33)SXI

Software Cisco ISR Generation 1 (ISR G1) and 7200 Series

Hash or mask

GRE or Layer 2

Full extended ACL

In or out

IP forward or GRE
• Release 12.4(10)
• Release 12.4(11)T3
• Release 12.4(15)T5
• Release 12.4(24)T

Software Cisco ISR Generation 2 (ISR G2) with Cisco Network Module (NME)

Hash or mask

GRE or Layer 2

Full extended ACL

In or out

IP forward or GRE

Release 15.0(1)M1

Software Cisco ISR G2 with Cisco Service Module Services-Ready Engine (SM-SRE)

Hash or mask

GRE or Layer 2

Full extended ACL

In or out

IP forward or GRE

Release 15.0(1)M21

Cisco Nexus 7000 Series

Mask only

Layer 2 only

Full extended ACL

In or out

Layer 2 or IP forward only

Release 4.2.4

Cisco ASR 1000 Series

Mask only

GRE or Layer 2

Full extended ACL

In or out

GRE or IP forward

Release 2.2XE

Cisco Catalyst 6500 Series

Supervisor Engine 720 and 32

Hash or mask

GRE or Layer 2

Full extended ACL

In or out

GRE, Generic GRE, or IP forward
• Release 12.2(18)SXF16
• Release 12.2(33)SXI

Cisco Catalyst 6500

Series Supervisor Engine 2

Hash or Mask

GRE or Layer 2

Full extended ACL

In or out

IP Forward or Layer 2

12.2(18)SXF16

Cisco Catalyst 4500 Series

Mask only

Layer 2 only

No Redirect List Support

In only

IP Forward or Layer 2

12.2(46)SG

Cisco Catalyst 3750 Series

Mask only

Layer 2 only

Extended ACL (no deny)

In only

IP Forward or Layer 2

12.2(46)SE
1M3 is schedule for release in July 2010 and will be the recommended release at that time.
11 Cisco IOS Software Release 15.0(1)M3 is scheduled for release in July 2010 and will be the recommended release at that time. See Table 2 for a list of caveats affecting WCCP and Cisco IOS Software Release 15.0(1)M2.

For More Information

For more information about Cisco WAAS Software, visit http://www.cisco.com/go/waas or contact your local account representative.