ALOHA Load Balancer Layer7 IPv6 Configuration

Target network diagram

an-0045-en-layer7_ipv6_configuration-1_new

Context

The website is available through IPv4 on the service IP 192.168.1.254. The IPv4 router does NAT IPv4 public address to this service IP.

About IPv6, the website hostname resolves directly on the IP 2001::2254, which is the IPv6 service IP hosting the service. The router just routes traffic to the Aloha.

All IPv6 traffic will be automatically translated to IPv4 by the Aloha: nothing to change on your servers and your servers don’t even need to be IPv6 compliant.

Network configuration

First ALOHA

On the GUI, click on Services > network > eth0 setup icon, then update the configuration as below:

service network eth0
 vrrp id 254
 vrrp garp 30
 vrrp prio 100
 vrrp no-address
 vrrp address 2001::2254
 vrrp address 192.168.1.254
 vrrp address 2001::2254
 ip6 address 2001::2201/96
 ip address 192.168.1.201/24
 mtu 1500

Click on [OK], then [Close].

Once the configuration has been updated, you need to reload the services:

Network: Click on Services > eth0 reload icon

VRRP: Click on Services > vrrp reload icon

Second ALOHA

On the GUI, click on Services > network > eth0 setup icon, then update the configuration as below:

service network eth0
 vrrp id 254
 vrrp garp 30
 vrrp prio 99
 vrrp no-address
 vrrp address 2001::2254
 vrrp address 192.168.1.254
 vrrp address 2001::2254
 ip6 address 2001::2202/96
 ip address 192.168.1.202/24
 mtu 1500

Click on [OK], then [Close].

Once the configuration has been updated, you need to reload the services:

Network: Click on Services > eth0 reload icon

VRRP: Click on Services > vrrp reload icon

Layer7 configuration

This configuration is common to both Aloha load balancer.

Add the bind on the IPv6 service address in the corresponding frontend section.

frontend ft_myappli
 bind 192.168.1.254:80
 bind 2001::2254:80
 mode http
 log global
 option httplog
 maxconn 1000
 timeout client 25s
 default_backend bk_myappli

Click on [OK], then [Apply]

Layer7 ipv6 configuration

Intended to help you to configure IPv6 at layer 7

Objective

Use the Aloha LoadBalancer as an IPv6 to IPv4 gateway with no modification on your current architecture.

Constraints

You must have an IPv6 connectivity

Complexity

2

Versions

v3.7 and later on ALB16K, ALB30K, ALB50K and ALBSA