Troubleshooting guide

1-7
Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring AppNav
Information About AppNav
Figure 1-3 Flow Distribution Using Site and Application Affinity
The following sections provide more details about these topics:
• Site Affinity, page 1-7
• Application Affinity, page 1-8
Site Affinity
Site affinity gives you the ability to always send all traffic from one site to a specific WNG, which allows
you to reserve optimization capacity for critical sites and to improve compression performance through
better utilization of the DRE cache.
Traffic from any location, not just a single site, can be matched in a class map and associated with a
WNG.
You can implement site affinity by configuring a class map that matches the device ID of the WAE in the
site. If a site has more than one WAE in a WCCP farm or a serial inline cluster, specify multiple device
IDs in the class map. Next, associate the class map with a distribution action to a WNG in a policy rule.
Site A Site B Site C Site D Site E Site F
AppNav Cluster
ANC-1
WNG-1
WN-1
WN-2
Site A
Site B
HTTP
SSL
Sites C, D, E, F
All other apps
WN-3
WN-4
WN-5
WN-6
WN-7
WN-8
WN-9
WNG-2 WNG-3 WNG-4
ANC-2
333465
WAN