03-01-2010 03:14 PM - edited 03-04-2019 07:39 AM
I have attached my network diagram in a pdf.
My ASA is configured with two outside interfaces
One to each ISP.
Each ISP router is getting a default route from provider.
I am currently using HSRP between the two routers on the inside interface on BVI interfaces of the routers.
I have a static default route configured on the ASA for ISP #1 HSRP's address.
I have IBGP running between the two routers.
I have a local weight preference on each router to take its own ISP out.
I want to utilize ISP #2 more and have created a few static default routes out that HSRP address.
Should I do away with one of the outside interfaces on the ASA?
What is the best way to handle the routing on the outside of the ASA?
Solved! Go to Solution.
03-05-2010 01:31 AM
Hello Trippi,
>> My ASA is configured with two outside interfaces
this can be a problem. ASA can perform load balancing towards different next-hops that are out the SAME interface.
The ASA is a FW first, so the outgoing interface is chosen by the FW xlate according to its configuration.
see
>> Load sharing on the adaptive security appliance is possible only for multiple next-hops available using single egress interface. Load sharing cannot share multiple egress interfaces.
http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/route_overview.html#wp1095679
I would suggest you to review your design in order to have a single outside interface to reach both routers
Hope to help
Giuseppe
03-05-2010 01:31 AM
Hello Trippi,
>> My ASA is configured with two outside interfaces
this can be a problem. ASA can perform load balancing towards different next-hops that are out the SAME interface.
The ASA is a FW first, so the outgoing interface is chosen by the FW xlate according to its configuration.
see
>> Load sharing on the adaptive security appliance is possible only for multiple next-hops available using single egress interface. Load sharing cannot share multiple egress interfaces.
http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/route_overview.html#wp1095679
I would suggest you to review your design in order to have a single outside interface to reach both routers
Hope to help
Giuseppe
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