Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 206)

194 ServerIron ADX Global Server Load Balancing Guide
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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 “Configuring GSLB policy
metrics for IPv6” 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
“Configuring DNS response parameters” on page 229) or
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)):