Install guide

WAN Load Balancing 1-11
Software Version 2.7.5
C613-10454-00 REV A
Configuring WAN Load Balancing
This section gives a step by step procedure and simple configuration examples
for configuring WAN load balancing on the router.
Before you
configure
Before you configure, you need the following:
■ the IP addresses of the healthcheck destination sites
■ the IP addresses of the ISPs that your data will be sent to
■ the network masks that you will apply for these addresses
■ PPP configured, if required
How to configure the WAN Load Balancer
Table 1-1: WAN load balancing configuration procedure
Step Commands Description
1 enable ip Enable the IP routing module (if it
has been disabled).
2 disable ip route multipath Because multipath IP routing and
WAN load balancing have
overlapping functionality, you must
disable multipath routing before
running the WAN load balancer.
3 add ip interface=interface
ipaddress={ipadd|dhcp} [other-options...]
Add the logical interfaces to the IP
module.
4 add ip route=ipadd interface=interface
nexthop=ipadd[mask=ipadd]
[other-options...]
Add your static routes to the IP
route table. Static routes can be
used to define default routes to
external routers or networks.
5 add ip route=0.0.0.0 interface=interface
nexthop=ipadd [other-options...]
Add the default routes for each
interface. Default routes always
have the network address 0.0.0.0.
When the router receives data for
which it has no route, it sends this
data to the default route. To define
a default route, set the IP address to
0.0.0.0 and set the nexthop address
to be the network (router) that is to
receive the default packets.
6 enable firewall If firewall operation is required,
enable the firewall function on the
router. A log message is generated
when this command is issued.
Note that although the WAN load
balancer will run without the
firewall, we recommend that
firewall NAT be used.If you are not
using a firewall go to step 12 and
set wanlb.
7 create firewall policy
=policy-name Create (and name) a firewall policy
for the WAN load balancer.