Maipu Load balancing - Static Routing

Today, in this section we will see about Load balancing using Maipu routers using two ISP. Many time I came across with such kind of requirement from customers. They have two links from two different service providers and to use both links. They want to divide traffic among both links.
                  Here is one simple example. how you can do it. In this senario, customer have /27 pool in LAN. The requirement is 3 host should use one link and two host should use another link.


Here is topology -

Test description -

Under the MP2824 has a Lan interface Sw1, and which IP is 129.255.150.27, under this Lan interface has 5 hosts, some host will go through R2 , some host will go through R3. When the one link was down all the operation will change and everything will work from one link. As the link get restored , it will work as per topology. 

Key Configuration:

ip access-list extended acl1                             ## match host ##

 permit ip host 129.255.150.26 any

 permit ip host 129.255.150.29 any

 exit

ip access-list extended acl2                            ## match host ##

 permit ip host 129.255.150.178 any

 permit ip host 129.255.150.135 any

 permit ip host 129.255.150.35 any

 exit

## Defined two Access list in order to make the route map.

vlan 1

 description default

 port 0-23 untagged

 exit

interface switchethernet0

description ### LOCAL LAN ###

 ip address 129.255.150.27 255.255.0.0

 vlan 1

 ip policy route-map test          ### use the route-map here

 exit

interface fastethernet0

 ip address 1.1.1.1 255.255.255.0

 keepalive 10 gateway 1.1.1.2

 exit

interface fastethernet1

 ip address 2.1.1.1 255.255.255.0

 keepalive 10 gateway 2.1.1.2

exit

            

ip route 0.0.0.0 0.0.0.0 1.1.1.2

ip route 0.0.0.0 0.0.0.0 2.1.1.2

route-map test permit 10

 match ip address acl1

 set ip next-hop 1.1.1.2 2.1.1.2

 exit

route-map test permit 20

 match ip address acl2

 set ip next-hop 2.1.1.2 1.1.1.2

 exit






In this way we can configure Maipu router for Load balancing and redundancy for multiple service provider using route-maps and policy based routing. 


Hope this will helpful for you..


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