Gslb of any queries, Displaying gslb for ipv6 configurations, Configuring a best-only policy – Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual

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Brocade Virtual ADX Global Server Load Balancing Guide

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Displaying GSLB for IPv6 configurations

Configuring a best-only policy

The GSLB policy places the best IP address selected by the GSLB policy at the top of the list.

Use the dns best-only command to configure the Brocade Virtual ADX to return only the best IP
address in the DNS response.

NOTE

If the GSLB policy does not result in the selection of a “best” address, the DNS reply can still contain
multiple addresses.

To configure the GSLB Brocade Virtual ADX to remove all addresses except the best address from
the DNS replies, enter the following commands:

Virtual ADX(config)#gslb policy

Virtual ADX(config-gslb-policy)#dns best-only

Syntax: [no] dns best-only

GSLB of ANY queries

DNS supports many different record types including IPv4 address records (A records), IPv6 address
records (AAAA records), Name Server records (NS records), Mail Exchange (MX records), Canonical
Name records (CNAME records) and so on. DNS also supports a special query type called "ANY".

If a client sends an ANY query, the GSLB Brocade Virtual ADX applies the GSLB policy to the IP
addresses configured for that domain in its IP list.

If the host has an IPv6 IP list configured, the Brocade Virtual ADX applies GSLB policy to the
addresses on the list and responds with AAAA records.

•

If the host has an IPv4 IP list configured, the Brocade Virtual ADX applies GSLB policy to the
addresses on the list and responds with A records.

•

If the host has both IPv6 and IPv4 IP lists configured, the Brocade Virtual ADX applies GSLB
policy to the addresses on both the lists and responds with both AAAA and A records.

Displaying GSLB for IPv6 configurations

Show commands enable you to view key information about the Brocade Virtual ADX components,
configurations, and policies

Table 16

lists key show commands for basic and advanced Brocade Virtual ADX configurations.

TABLE 16

GSLB for IPv6 show commands

Feature

Reference

Basic configuration

Displaying DNS cache proxy statistics

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Displaying the default GSLB policy