Troubleshooting guide

CHAPTER
1-1
Cisco Wide Area Application Services Configuration Guide
OL-26579-01
1
Configuring AppNav
This chapter describes how to configure Cisco WAAS AppNav, which is a hardware and software
solution that simplifies network integration of WAN optimization and overcomes challenges with
provisioning, visibility, scalability, asymmetry, and high availability.
This chapter includes the following topics:
• Information About AppNav, page 1-1
• Prerequisites for AppNav Deployment, page 1-9
• Guidelines and Limitations, page 1-9
• Configuring an AppNav Cluster, page 1-10
• Monitoring an AppNav Cluster, page 1-34
Information About AppNav
AppNav greatly reduces dependency on the intercepting switch or router by distributing traffic among
WAAS devices for optimization using a powerful class and policy mechanism. You can use WAAS nodes
(WNs) to optimize traffic based on sites and/or applications.
The AppNav solution has the ability to scale up to available capacity by taking into account WAAS
device utilization as it distributes traffic among nodes. Also, the solution provides for high availability
of optimization capacity by monitoring node overload and liveliness and by providing configurable
failure and overload policies.
This section includes the following sections:
• System Components, page 1-1
• AppNav Controller Deployment Models, page 1-2
• AppNav Controller Interface Modules, page 1-3
• AppNav Policy, page 1-4
System Components
The AppNav solution consists of the following components (see Figure 1-1):
• AppNav Controller (ANC)—A WAAS appliance with a Cisco AppNav Controller Interface Module
that intercepts network traffic and, based on an AppNav policy, distributes that traffic to one or more
WAAS nodes (WNs) for optimization.