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Forum Discussion

Qasim's avatar
Qasim
Icon for Cirrostratus rankCirrostratus
Nov 01, 2019

Cross DC failover with VS using IRUles

Hi, I want to publish 2 services externally (internet) and internally (LAN/WAN) and want to have a cross DC failover but I have a limited number of public IP addresses so would like use a single VS ...
JG's avatar
JG
Icon for Cumulonimbus rankCumulonimbus
Nov 02, 2019

Cross-DC service failover is typically done through the use of F5's "BIG-IP DNS" (erstwhile GTM).

 

It is impossible to make any suggestions here without the knowledge of the particulars of your network topology.

Qasim's avatar
Qasim
Icon for Cirrostratus rankCirrostratus
Nov 02, 2019

Hi Jg,

​

Yes the f5 appliance hosting this service has a gtm/gslb configure as well. Normally I create two virtual servers in the gslb section I.e. one as an internal and another as external-translation. I create two gtm pools again one external.and another internal, covering VSs in both DCs and then assign then to that particular wide-ip. However, I am.confused on this one because I will be using an IRule on the ltm to redirect traffic. Which means the VS wont go down if one of the ltm pool goes down.

​

TbH, if there is a document somewhere that has an example of such scenarios, even that will help.

​Thanks