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VDS-IS Comparison Of RFQDN Redirection and DNS Redirection

Introduction

This article is to compare the VDS-IS redirection method with the packet capture:

- Router Fully Qualified Domain Name (RFQDN) Redirection

- DNS Redirection

 

Prerequisites

Components Used

1 x Service Router

1 x Service Engine

1 x Client

 

Configure

Network Diagram

1. RFQDN Redirection

RFQDN Redirect.png

 

2. DNS Redirection

DNS Redirect.png

 

 

Configurations

1. RFQDN Redirection is the default configuration.

SR#sh service-router redirect-mode
ip-redirect is not enabled
DNS Redirection is not configured!

 

2. DNS Redirection

SR(config)#service-router redirect-mode dns-redirect <domainname.com>

SR#sh service-router redirect-mode
ip-redirect is not enabled
dns-redirect domain <domainname.com>

 

Verify

1. RFQDN Redirection

DNS Request

RFQDN DNS.png

 

HTTP Request

RFQDN HTTP.png

 

WGET Output

RFQDN Wget.png

 

2. DNS Redirection

DNS Request

DNS DNS.png

HTTP Request

DNS HTTP.png 

WGET Output

DNS Wget.png

Note:

Please note the device name for the Service Router in the example is cde-205-a-sr, the domain name is smooth.cdn1.apac-video.cisco.com

 

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