Overview: Integrating BIG-IP DNS (formerly GTM) with other BIG-IP systems on a Setting Up a BIG-IP DNS Redundant System Configuration. Hi, Does anyone have any example GTM configurations to provide GSLB to LTMs? and reading this guide: Having said that, here are some simple configuration commands via tmsh for configuring a GTM for initial use. Integrating BIG-IP GTM Into a Network with BIG-IP LTM Overview: Configuring how and when GTM saves configuration changes GTM never saves changes to the configuration (manual save required).

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When you upgrade from version A third option might be for GTM to send a request to the data center that is located closest to the client’s source address.

Example GTM and LTM configuration

Primary zones are authoritative, that is, they respond to DNS queries for the domain or sub-domain. When you design your network, ensure that this particular pool is kept in reserve and not used as part of the normal global server load balancing.

About links A link is a logical representation of a physical device router that connects your network to the Internet. Guiee Stub zones are similar to secondary zones, except that stub zones contain only the NS records for the zone.

The IT team can use this configuration to customize the virtual server for each pool to which it belongs, without modifying the actual virtual server itself. Hint The zone file for a hint zone specifies an initial set of root nameservers for the zone.

The new active unit remains active until another event occurs that would cause the unit to go offline, or you manually reset the status connfiguration each unit. A distributed application is a collection of one or more wide IPs, data centers, and links that serve as a single application to a web site visitor.


All of the resources guidd your network are associated with a data center. A virtual server is a combination of IP address and port number that points to a specific resource on the network. Most load balancing methods divide DNS name resolution requests among available pools or virtual servers. Link names are limited to 63 characters.

The ZoneRunner utility updates named. This record must be the only one associated with the alias name.

Defining a link Ensure that at least one data center exists in the configuration. You can login here. Create a wide IP to map a FQDN to one or more pools of virtual servers that host the content of the domain, and assign a last resort pool to the wide IP. With load balancing systems, virtual servers are often proxies that allow the load balancing server to manage a resource request across a multitude of resources. Perform these steps on both the active and standby systems.

AskF5 | Manual: BIG-IP Global Traffic Manager: Load Balancing

Consequently, the system does not send resolution requests to any of the distributed application resources, until the entire application becomes available again. An LDNS entry can be in one of three states: Configure a virtual server to be available based on the availability of other virtual servers by guuide a Dependency List for the virtual server.

Your post has been identified as spam. In general, the New and Pending states are temporary.

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You can organize logical network components into groups that represent a business environment. It is usually easier to supply configuuration A record for a given address and use CNAME records to define alias host names for that address. If the active unit goes offline, the standby unit immediately assumes responsibility for managing DNS traffic. About listeners A listener is a specialized virtual server that passively checks for DNS packets on port 53 and the IP address you assign to the listener.

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Load balancing outbound traffic through links of differing bandwidths Confiyuration that at least one data center exists in the configuration.

Determine the virtual servers upon which you want the availability of a virtual server to be dependent. These records are used for reverse name lookups. Probe using TCP Cisco routers: Whenever the local nameserver starts, it queries a root nameserver in the hint zone file to obtain the most recent list of root nameservers.

This virtual server is also the backup resource for requests that originate from the United States. Creating a hint zone Hint zones designate a subset of the root nameservers list.

A secondary zone responds authoritatively for the zone provided that the zone data is valid. The root hint is built into BIND version 9.

Unlike other resource records, you create a SOA record only when you create a new master zone file. If yes, two self-ip addresses, each local to the pair of LTM devices, should be added as well?

Configuring statistics to reflect link bandwidth usage Your ISP providers must use duplex billing. The zone file for a forwarding zone contains only information to forward DNS queries to another nameserver on a per-zone or per-domain basis.