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GLM_191985
Cirrus
May 19, 2017GTM VS DNS server
GTM is nothing but works as a DNS for a corporate network , If previously we have legacy DNS server in our environment, Then what advantages does GTM brings compares to DNS server
Pedro_Haoa
May 19, 2017Ret. Employee
Complementing what Kevin wrote, with BIG-IP DNS you have the same benefits of the traditional DNS and much more in terms of availability, performance, security and management capabilities:
Traditional DNS (BIND & Microsoft DNS):
- Do not offers GSLB capabilities.
- Do not offers true high availability. (There's no monitors)
- They only have a limited possibility of static load balancing. (Ex. Round Robin).
- You could have potential errors when editing DNS files using BIND, without validation.
- Performance is slower, because the resolution process tipically is done reading your records from the HDD.
F5 BIG-IP DNS:
- Offer Full GSLB capabilities.
- Offer True High Availability (HA). You could monitor every resource in every Data Center and only resolve to working addresses.
- You have static and dynamic load balancing capabilities in order to resolve to best of available addresses (Ex. QoS, Topology, Least Connection LB methods).
- There's a great tool (Zonerunner) for editing address records, that validates your input.
- Performance is faster, because the resolution process tipically is done reading your records from the RAM (DNS Express).
- DDoS protection.
- Easier configuration for DNSSEC (All-in-One).
- F5 Analytics visibility that provide information about your resolutions. (Top Countries, Top domains, etc.)
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