Forum Discussion
DNS LTM adding recommendation
Hello,
What is the recommendation in adding GTM and LTM/AWAF devices in multi datacenter
More explanation
if we have HQ and DR datacenters
HQ data center
GTM device (One device)
LTM/AWAF Device (Pair)
DR data center
GTM device (One device)
LTM/AWAF Device (Pair)
shall we add DR LTM/AWAF to HQ GTM by using DR LTM/AWAF self IP reachable through internet or internally?
Please highlight pros and cons for each method
Why are we think to add DR LTM/AWAF to HQ GTM is to ensure that HQ GTM will see VS on DR LTM/AWAF down when internet link is down in DR
If there another way to ensure that by monitoring links please clarify
3 Replies
- I hope you have internal connectivity towards DC(MPLS). So better to connect via internal self ip. For our infra. i done like the same. So GTM will have all the DC and DR vips and if the DC goes down traffic will switch to DR VIP. - i dont think you will have F5 self ip access from internet. its not secure. Please limit your self/management ip access from internal network 
- Ahmed_SaiedAltocumulus Yes, we will add all devices for sure but question here is on HQ GTM shall will add DR devices to it ( DR GTM device and another pair LTM/ASM) by self IP though internet or internally? which pros and cons of each way? 
- Hi - We should add the lTM devices to all GTM for sync. If you have a requirement for DNS for the VIPs in those device - You can add the lTM using self ips and the self ip should allow required port(port lockdown settings) - You can use the link for adding the LTM to GTMs - https://my.f5.com/manage/s/article/K43300744 
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