Brocade Communications Systems 12.4.00 Manual De Usuario

Global server load balancing for IPv6 overview

2

GSLB for IPv6 feature support

In the initial release of GSLB for IPv6, a subset of modes, GSLB policy metrics, and other features 
and modules are supported.

Modes

In the current implementation, GSLB ServerIron ADX performs GSLB for IPv6 domain IP addresses 
only in the DNS cache proxy with Override mode.

The following modes are not supported: 

•

Proxy for DNS server

•

DNS cache proxy only

•

Transparent DNS query intercept

•

Override only

Policy metrics

GSLB ServerIron ADX does not currently support the following policy metrics for load balancing IPv6 
addresses:

•

Active and passive round-trip time 

•

Connection load

For information about policy metrics supported with GSLB for IPv6, see 

 on page 204.

Features

GSLB ServerIron ADX for IPv6 does not currently support the following modules and features:

•

Affinity 

•

GSLB affinity for high availability

•

GSLB domain-level affinity

•

TCP DNS

•

Private VIPs for GSLB

Secure GSLB

Secure GSLB is not supported with GSLB for IPv6.

Fragmentation

Fragmentation is not supported in this initial release. Customers should either configure an 
active-only policy or best-only policy (see 

ensure that the number of IP addresses configured in the IP list is small enough to avoid 
fragmentation (i.e., assuming a full length query name (255 bytes)):