Cisco ASR 1000 Series Configuration Guide

Prerequisites for WCCPv2—IPv6 Support
•
IP must be configured on the interface connected to the Internet and another interface must be connected
to the content engine.
•
The interface connected to the content engine must be a Fast Ethernet or Gigabit Ethernet interface.
Restrictions for WCCPv2—IPv6 Support
WCCPv2
•
For routers servicing a multicast cluster, the Time To Live (TTL) value must be set at 15 or lower.
•
Service groups can comprise up to 32 content engines and 32 routers.
•
All content engines in a cluster must be configured to communicate with all routers servicing the cluster.
•
Multicast addresses must be in the range from 224.0.0.0 to 239.255.255.255.
•
Effective from Cisco IOS XE Release 3.10, the Cisco ASR 1000 Series Aggregation Services Routers
support hash assignment for IPv6 load balance across content engines, and does not support mask
assignment. However, it supports both hash assignment and mask assignment for IPv4.
•
Effective from Cisco IOS XE Release 3.7, WCCP Interoperability with Network Address Translation
(NAT) is supported.
Layer 2 Forwarding and Return
•
Layer 2 redirection requires that content engines be directly connected to an interface on each WCCP
router. Unless multicast IP addresses are used, WCCP configuration of the content engine must reference
the directly connected interface IP address of the WCCP router and not a loopback IP address or any
other IP address configured on the WCCP router.
Information About WCCPv2—IPv6 Support
WCCP Overview
WCCP uses Cisco Content Engines (or other content engines running WCCP) to localize web traffic patterns
in the network, enabling content requests to be fulfilled locally. Traffic localization reduces transmission costs
and download time.
WCCP enables routing platforms to transparently redirect content requests. The main benefit of transparent
redirection is that users need not configure their browsers to use a web proxy. Instead, they can use the target
URL to request content, and have their requests automatically redirected to a content engine. The word
"transparent" in this case means that the end user does not know that a requested file (such as a web page)
came from the content engine instead of from the originally specified server.
IP Application Services Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 1000)
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WCCPv2—IPv6 Support
Prerequisites for WCCPv2—IPv6 Support

Cisco ASR 1000 Series Specifications

General

Brand	Cisco
Model	ASR 1000 Series
Category	Network Router
Language	English