07-02-2006 07:09 PM - edited 03-09-2019 03:28 PM
Hi,
Anyone got any idea on how to acheive
dual ISP, dual firewall (HA).
I need design a network the uses 2 ASA 5520, and load balance between 2 different ISP.
I have seen the sample configuration for two ISP but active and standby.
I need both the firewall and ISP to loadbalanced. Wonder anyone has push this to the limited ?
07-03-2006 01:53 AM
BGP is the only way I can think of. A single IP range advertised both by ISPs.
07-03-2006 04:39 AM
07-03-2006 11:05 AM
well that can be done only for outbound loadbalancing...i.e. traffic going out of the network.....
07-03-2006 11:19 AM
I do not believe you can achieve load balancing between 2 ISP's because of how BGP works. You can achieve redundancy in the event your primary ISP connection goes down via BGP and HSRP. The following links should help you with that information.
http://www.cisco.com/en/US/customer/tech/tk365/technologies_q_and_a_item09186a00800949e8.shtml
HTH
07-03-2006 11:23 AM
wat u will have to do is....
lets say we have two vlans (10,20) and two ISPs (1 and 2)
We can use the two firewalls either in active/satndby mode or
We will nat all user on vlan 10 to isp 1 public IP
And Vlan 20 users to isp2 public IP...
both the isps will be connectd to a single router...
this router will have policy based routing (pbr) defining that traffic from any IP ISP1 will be sent to isp1 and isp2 to isp2..
this would provide us witg basic kind of loadbalancing..
hope that helps...
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