Forum Discussion
AltostratusACTIVE-PASSIVE GTM requirement
Hi Friends,
having a query related to GTM :
is there any logic in configuring GTM with ACTIVE-PASSIVE mode across two data center. i.e. Location-1 DC - Active and Location-2 DC passive. (Eg : In Stretched Data Centers environment)
As at last, request has to be served from ACTIVE data center only.
Kindly share your views.
Rgds
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- Brad_Scherer
Employee
There is global availability mode load balancing which will always choose the resource in one DC as long as it’s available however both gtms will always be “active”.
EIT_NetworkThanks, s.scherer.
But i know about GTM, i think i am failed to make all understand about my question. Lemme try again....
With Active-Passive mode ...We may be having only One VIP per application (common IP at both data center) . We may achieve the IP resolution without GTM/BIG-IP-DNS as well with traditional way i.e. "A" entry against a particular application VIP on LDNS or Public DNS that it's. Then Why do we require Listener entry (NS Entry or CNAME Entry on DNS) for GTM then... I mean what extra benefit i am getting here by using GTM with Active-PASSIVE.
Pls note again, that with ACTIVE-PASSIVE across two data center (One DC active and Other DC passive) i am referring in sense of stretched data center . i.e same IP Pools (Workload and VIP) will be shared among both the Data center.
However ....With ACTIVE-ACTIVE mode, we have different pools of Work Load or VIP per data center. hence per DC Listener IPs (same IPs for all applications) entry on require for NS Entry/ Delegation Record on Public DNS or LDNS pointing to application URL.
Rgds
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This article discusses something that sounds similar to what you're trying to achieve.
K62640222: Configuring wide IP data center failover
