Cisco Cisco Application Performance Assurance Network Module Guida Informativa
Q&A
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Cisco Application-Oriented Networking
Q.
What platforms support Cisco
®
Application-Oriented Networking (AON) technology? Is
Cisco AON also a standalone appliance?
A.
Cisco AON is supported by the following Cisco router platforms:
●
Cisco 2800, 3700, and 3800 Series Integrated Services Routers
To address situations where a platform footprint does not exist (for example, a Cisco 3800
Series Router is in place) or organizational demarcation is required (for example network,
application, or security devices), AON is also available on appliance form factors. Beginning
with AON 3.0, Cisco AON will be available on the following Cisco Appliance form factors:
●
CADE-1010 Integrated Single-Core Appliance
●
CADE-2142 Integrated Dual Quad-Core Appliance
Q.
What are the benefits to deploying Cisco AON rather than a dedicated external device?
A.
Cisco AON embeds message services within the network fabric to enable benefits that an
external device cannot deliver. As the network is ubiquitous, services can be made available
at any point in the network; services can be shared across multiple systems; security and
policy management can be centralized; and management of distributed policies can be
simplified.
Q.
Will Cisco AON slow down the hardware?
A.
No. Only the traffic flows that require Cisco AON processing are forwarded to the AON
module. All other traffic is handled in the Cisco Express Forwarding forwarding path.
Q.
Which version of software supports Cisco AON?
A.
Cisco AON hardware is supported by the following software images:
●
Cisco IOS
®
Software (MSFC2): Release 12.2(18)SXF12
●
Cisco 28xx/37xx/38xx IOS: Release 12.4(15)T
Q.
How does the network direct traffic to Cisco AON nodes?
A.
Cisco AON can receive traffic in two basic modes: explicit or transparent mode. In explicit
mode, AON is advertised by Domain Name System (DNS) as the destination for a particular
service, and TCP sessions for a particular service are directly forwarded to an AON node.
Transparent mode uses network-based mechanisms to transparently intercept traffic and
forward it to an available AON node. Transparent redirection uses either WCCP (Web Cache
Coordination Protocol) functionality, for transparent redirection of traffic to Cisco AON, or
Catalyst
®
6500 Content Services Mode (CSM) in bridged mode.
Q.
What is the sequence of events for a message in Cisco AON?
A.
As packets enter a router with Cisco AON enabled, those identified as "interesting" are
forwarded to the AON node where the TCP session is terminated on the appropriate adapter:
HTTP, HTTPS, SOAP, Secure Sockets Layer (SSL)
1
, Java Messaging Service (JMS),
IBM/MQ, Java Data Base Connectivity (JDBC). Once received by the AON node, the message
1
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. For more
details please visit the following website:
http://www.openssl.org/
.