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Cisco CSS 11150 Series switch and DNS Sticky

butlerb
Level 1
Level 1

Hi,

I have currently have two internet independent facing CSS11154 switches with two web server farm environment across both of them.

I have a single URL that round robins between my internet facing links for these server farms.

The application is based on ssl connectivity to a web farm, because of the application and need to maintain session transactions, I have needed to use “advanced-balance stick-srcip”.

When using one leg (internet link) it works fine, no problem and visa versa.

However, when I turn both of them on my application fails.

Would I need to incorporate DNS Sticky to resolve my issue ?

This is one of the configs from one of the CSS Switches, the other has a similar config different servers.

!*************************** GLOBAL ***************************

acl enable

date european-date

dns-server

app

app session 10.1.1.1 14 authChallenge ebe encryptMd5hash

!************************** SERVICE **************************

service Server01

ip address 10.140.80.45

port 443

protocol tcp

active

service Server02

port 443

protocol tcp

ip address 10.140.80.47

active

service Server03

port 443

protocol tcp

ip address 10.140.80.53

active

service Server04

ip address 10.140.80.54

port 443

protocol tcp

active

!*************************** OWNER ***************************

owner HOME

dns both

content www-home.com

vip address 192.168.0.1

add dns www.home.com

add service Server01

add service Server02

add service Server03

add service Server04

advanced-balance sticky-srcip

active

Many Thanks !

Any view would be most helpful

1 Reply 1

Gilles Dufour
Cisco Employee
Cisco Employee

looks like you will need dns sticky indeed.

To be 100% sure you should capture a sniffer trace of a failure.

But most probably this is a dns sticky problem.

Follow this link for sample configuration of dns sticky.

http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_guide_chapter09186a0080176f6f.html

Regards,

Gilles.

Review Cisco Networking for a $25 gift card