Usage Guidelines
WCCP transparent caching bypasses Network Address Translation (NAT) when Cisco Express Forwarding
switching is enabled. To work around this situation, configure WCCP transparent caching in the outgoing
direction, enable Cisco Express Forwarding switching on the content engine interface, and specify the
ip wccp
web-cache redirect out
command. Configure WCCP in the incoming direction on the inside interface by
specifying the
ip wccp redirect exclude in
command on the router interface facing the cache. This configuration
prevents the redirection of any packets arriving on that interface.
You can also include a redirect list when configuring a service group. The specified redirect list will deny
packets with a NAT (source) IP address and prevent redirection.
This command instructs a device to enable or disable support for the specified service number or the web-cache
service name. A service number can be from 0 to 254. Once the service number or name is enabled, the router
can participate in the establishment of a service group.
When the
no ip wccp
command is entered, the device terminates participation in the service group, deallocates
space if none of the interfaces still have the service configured, and terminates the WCCP task if no other
services are configured.
The keywords following the
web-cache
keyword and the
service-number
argument are optional and may be
specified in any order, but only may be specified once.
Examples
The following example configures a web cache, the interface connected to the application engine or the server,
and the interface connected to the client:
Device(config)#
ip wccp web-cache
Device(config)#
interface gigabitethernet1/0/1
Device(config-if)#
no switchport
Device(config-if)#
ip address 172.20.10.30 255.255.255.0
Device(config-if)#
no shutdown
Device(config-if)#
exit
Device(config)#
interface gigabitethernet1/0/2
Device(config-if)#
no switchport
Device(config-if)#
*Dec
6 13:11:29.507: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/3, changed state to down
Device(config-if)#
ip address 175.20.20.10 255.255.255.0
Device(config-if)#
no shutdown
Device(config-if)#
ip wccp web-cache redirect in
Device(config-if)#
ip wccp web-cache group-listen
Device(config-if)#
exit
Related Commands
Description
Command
Displays platform-dependent WCCP information.
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
489
ip wccp
Summary of Contents for Catalyst 3650 Series
Page 2: ... 2017 Cisco Systems Inc All rights reserved ...
Page 37: ...P A R T I Campus Fabric Campus Fabric page 13 ...
Page 38: ......
Page 51: ...P A R T II Interface and Hardware Components Interface and Hardware Commands page 27 ...
Page 52: ......
Page 165: ...P A R T III IP IP page 141 ...
Page 166: ......
Page 235: ...P A R T IV IP Multicast Routing IP Multicast Routing page 211 ...
Page 236: ......
Page 303: ...P A R T V IPv6 IPv6 page 279 ...
Page 304: ......
Page 307: ...P A R T VI Layer 2 3 Layer 2 3 page 283 ...
Page 308: ......
Page 399: ...P A R T VII Multiprotocol Label Switching MPLS MPLS page 375 Multicast VPN page 385 ...
Page 400: ......
Page 429: ...P A R T VIII Network Management Flexible NetFlow page 405 Network Management page 479 ...
Page 430: ......
Page 595: ...P A R T IX Programmability Programmability page 571 ...
Page 596: ......
Page 624: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 598 ping6 ...
Page 625: ...P A R T X QoS Auto QoS page 601 QoS page 641 ...
Page 626: ......
Page 666: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 640 show auto qos ...
Page 706: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 680 trust device ...
Page 707: ...P A R T XI Routing Bidirectional Forwarding Detection page 683 ...
Page 708: ......
Page 725: ...P A R T XII Security Security page 701 ...
Page 726: ......
Page 875: ...P A R T XIII Stack Manager and High Availability Stack Manager and High Availability page 851 ...
Page 876: ......
Page 912: ......
Page 1027: ...P A R T XV VLAN VLAN page 1003 ...
Page 1028: ......
Page 1100: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1074 vtp primary ...
Page 1102: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1076 Notices ...
Page 1108: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches IN 6 Index ...