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Forum Discussion

The-messenger's avatar
The-messenger
Icon for Cirrostratus rankCirrostratus
Sep 09, 2016

Big IP VS questions

Some basic questions - 1 -When I use the http iApp to configure services I have a host/FQDN address entry. Where is this entry configured when you don't use the iApp?   2 - Can I configure the s...
BIG-IP
devops
LTM
Vijay_E's avatar
Vijay_E
Icon for Cirrus rankCirrus
Sep 10, 2016

  1. I haven't used iApp. If you can explain the functionality, I may be able to answer.

     

  2. You cannot have multiple VS that has the same IP:Port combination. You can utilize iRule or Policy in order to load balance based on Host header.

     

Example:

 

domain.com > VS-1 > Pool-domain

 

domain1.com > VS-1 > Pool-domain-1

 

In the above cases, VS-1 will send traffic to different pools based on host header and the selection is made using iRule or Policy. iRule is my preference and suggestion as it provides granular control.

 

3 . If the pool members & the service function are the same for both internal and external service, use same pool. If the pool members or service function are different, use different pools. This is just a guide and it could vary depending on other factors within your environment and function.