may not be automatic fail-over. Instead of having one ISP connection lying
there, just waiting for the primary link to fail, you can configure load
balancing to have some of your traffics go through that link. This will help
speed up your connections and avoid congesting your primary link. To do this, I
am going to use route-maps and ACLs. It is very easy and straight forward.
Let’s do it.
has IP 192.168.3.3/24.
that host A internet-bound traffics will go through ISP1 while those of host B
will go through ISP2
gateway to ISP1
gateway to ISP2
more IP addresses depending on how many hosts you want to give internet access
through ISP1 or ISP2 as the case may be.
access-list extended ISP1-Users
ip host 192.168.3.2 any
access-list extended ISP2-Users
ip host 192.168.3.3 any
ip add ISP1-Users
ip next-hop 192.168.1.1
ip add ISP2-Users
ip next-hop 192.168.2.1
ISP gateways. 192.168.1.1 is the gateway to ISP1 while 192.168.2.1 is the
gateway to ISP2. The disadvantage to this kind of setup is that hostA will remain down when ISP1 goes down even though ISP2 is up. The setup can be updated to allow hostA switch switch to ISP2 whenever ISP1 is observed down. I will be sharing this in a different setup. Thanks for reading and remain safe.