Deploying ISP load balancing
Hi all,
We already have 2 BIG-IP APM behind 2 Cisco Firewalls. We want to use the same BIG-IP for load balancing between 2 ISP links (I think, in front of the firewalls). We already have a full license, so we can configure the BIG-IPs for doing that.
We have experience in LTM and APM, but not in load balancing ISP links.
Today, the APM module consumes 2 network ports for incoming traffic from internet and for internal traffic.
We think in add 3 more network ports (2 for ISPs and the 3rd for traffic going to Firewall).
Is it a good idea to have the same BIG-IP Hardware in front of and behind the Firewall?
On the other hand, for incoming traffic, is it strictly necessary to delegate DNS traffic to BIG-IP? Is it not possible for BIG-IP to send an update to the external DNS server, every time the ISP links fails?
Thanks in advance
Best regards