F5-GTM Global Traffic Manager(BigIP-DNS)&all Technical Labs

This lecture explains why we need the domain name system, a global database that maps fully qualified domain names to IP addresses via authoritative name servers worldwide.

Trace how a local dns resolves a domain by querying the dot org and dot com hierarchy, reaching the authoritative name server for the final www address.

This lecture explains the two recursion methods—the forwarding approach and the root's approach—focusing on how local DNS servers interact with end users and root and authoritative servers.

Explore the dns recursion process, tracing a browser request from cache through local dns to top-level and second-level domains via authoritative servers to obtain the ip address.

F5 GTM globally distributes and accelerates traffic to backend application servers across all branches, acting as an authoritative DNS and cache with load balancing, observers, and Nesic-based protection.

Explore F5 BIG-IP DNS solution design for global traffic management, presenting single and multi-site architectures where five LTM devices manage traffic to authoritative name servers and regional application servers.

Define GTM listeners on a layer seven surface to receive and resolve DNS queries on port 53, and configure data centers, virtual servers, and pools for global server balancing.

Explore the operation of F5 BigIP DNS and LTM across global data centers, leveraging visual servers, listeners, and synchronized assistants to achieve intelligent resolution and load balancing.

Configure GSLB by setting up the listener, data centers, servers and virtual servers, health monitors, synchronization groups, and certificates to enable global traffic management across branches.

Learn to test a global traffic manager using a downloaded tool to resolve domain names to IPs, perform traffic balancing, and verify backend server responses and statistics.

Explore how wide IPs and pools organize traffic by defining configuration components, naming rules, and selecting balancing methods like round robin for virtual and backend servers.

Explore how F5 GTM enables load balancing and topology records, using dynamic rebalancing, round robin and metric-based methods, with geolocation-driven decision making to optimize global traffic and failover.

Explore GSLB operation and synchronization across five BIG-IP LTM devices, including configuring data centers, symbology records, and a synchronization group to enable global load balancing.

Explore how the global traffic manager operates across two data centers with listeners, servers, and virtual servers, and load balancing, while synchronizing configurations via the IKUO utility and certificates.

Create a listener by naming it, assigning an IP address and port 53, and selecting UDP and TCP protocols to handle queries from inside and outside the organization.

In this lab, create GTM configuration components by building data centers (China and Japan), adding physical and virtual servers, and configuring virtual servers with monitors to enable global traffic balancing.

Create the remaining GTM components, define pools and wide IPs, set GTM visual component rules, apply round-robin load balancing, and assign health monitors to back end application servers.

This lab shows how to synchronize five BIG-IP devices for GTM DNS by creating certificates, forming a GTM synchronization group, and using add and equity commands to share configuration.

Learn to install and deploy the dig tool to test the big-ip system and dns resolution, including download, setting the bin path, and verifying with an admin command prompt.

Explore how to use the dig tool to query the GTM listener IP, verify round-robin load balancing among pool members, and interpret DNS responses in a BigIP DNS/GTM lab.

Apply topology-based load balancing across data centers using geographical location to route requests to the appropriate pools, with round-robin fallback and automatic failover when a data center goes down.

Explore topology records deployment and configuration in F5 GTM, create records with source filters, set weights and priorities, manage change order, and apply balancing time rules.

Differentiate topology records in a lab setting by adjusting record order and disabling the longest match feature to control query routing and precedence.

Explore the longest match feature to sort topology records by source subnet, region, ISP, and source negation, then by destination criteria and weight, with practical lab demonstration.

Test topology records operation in GTM by setting up pools for load balancing, and validating query responses with lookups across subnets and servers.