Manual Chapter : Preparing BIG-IP DNS for Static Persist Load Balancing for Transaction-Oriented Traffic
Applies To:Show Versions
- 14.1.3, 14.1.2, 14.1.0
Preparing BIG-IP DNS for Static Persist Load Balancing for Transaction-Oriented
About Static Persist load balancing
The Static Persist load balancing method uses the persist mask, with the source IP address of the LDNS, in a deterministic algorithm to send requests to a specific pool member (virtual server). Using this method, BIG-IP® DNS sends DNS name resolution requests to the first available pool member based on a hash algorithm that determines the order of the pool members. This algorithm orders the pool members differently for each LDNS that is sending requests to BIG-IP DNS, taking into account the Classless Inter-Domain Routing (CIDR) of the LDNS. As BIG-IP DNS distributes requests across all pool members, requests from each LDNS (and thus, each client) are generally sent to the same pool member. When the selected pool member becomes unavailable, BIG-IP DNS sends requests to another pool member. When the original pool member becomes available again, BIG-IP DNS sends requests to that pool member.
BIG-IP DNS to provide Static Persist load balancing
You can configure BIG-IP DNS to provide Static Persist load balancing of LDNS to virtual servers. With this configuration, BIG-IP DNS guarantees that certain transactions are routed through a single transaction manager, such as Local Traffic Manager, or another server array manager. This is beneficial for transaction-oriented traffic, such as e-commerce shopping carts, online trading, and online banking.
options for Static Persist load balancing
The Static Persist load balancing method uses the Classless Inter-Domain Routing (CIDR) system to identify which IP addresses require a persistent connection to a virtual server. You can configure the range of IP addresses by configuring the Static Persist CIDR setting for IPv4 and IPv6 addresses.
- On the Main tab, click.The GSLB Load Balancing configuration screen opens.
- For theStatic Persist CIDR (IPv4)setting, type the number of bits that determine the IP address range for IPv4 addresses.The default value is32.
- For theStatic Persist CIDR (IPv6)setting, type the number of bits that determine the IP address range for IPv6 addresses.The default value is128.
You can now configure a pool for Static Persist load balancing.