Change default route

[Manu381]

Hi, and sorry for y english....

I have 2 interfaces: ADSL (pppoe) and SDSL and I add FIBER interace

I want the FIBER interface by default.

when I SSH:

ciscoasa# sh route

Gateway of last resort is xxxx.xxx.138.83 to network 0.0.0.0

S* 0.0.0.0 0.0.0.0 [1/0] via xxxx.xxxxx.138.83, ADSL

ciscoasa# sh run route
route FIBRE 0.0.0.0 0.0.0.0 xxx.xxx.187.26 10
route SDSL4M 0.0.0.0 0.0.0.0 xxx.xxxx.39.157 15

I added the route FIBRE and SDSL4M route with different metrics

How can I change the default route ? the configuration of the ADSL route doesn't appear in ASDM

if I try metric 1 for FIBRE route: Cannot add route entry, conflict with existing routes

Why the default route (S*) doesn't appear in running conf?

thanks a lot

[balaji.bandi]

As per my knowledge, ASA can not Loadbalance between the link you can have 1 link at a time use, You can use PBR if you looking to use both the links sending XYZ to Gateway 1, ABC to Gateway 2.

Instead, you can use IPSLA to track the link and failover. (below reference guide)

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806e880b.shtml

if you looking PBR

https://www.networkstraining.com/cisco-asa-policy-based-routing-pbr/

[Georg Pauwen]

Hello,

the error message:

Cannot add route entry, conflict with existing routes

should only appear if the next hop is the same for two static routes. If you use different next-hop-ip-addresses, and higher administrative distances, the below should work.

route FIBRE 0.0.0.0 0.0.0.0 next-hop-ip-address
route SDSL4M 0.0.0.0 0.0.0.0 next-hop-ip-address 10
route ADSL 0.0.0.0 0.0.0.0 next-hop-ip-address 20

That said, ASDM can be tricky sometimes, try the command line instead...

[paul driver]

Hello

@balaji.bandiis correct ECMP isnt supported on  ASA across multiple next-hop interfaces, so you cannot specify the same static routes with the same admin distance having different next-hop interfaces.

Example -Allowed
route Outside 0.0.0.0 0.0.0.0 10.1.14.4 1
route Outside 0.0.0.0 0.0.0.0 10.1.141.4 1

route Outside 0.0.0.0 0.0.0.0 10.1.14.4 1
route Outside1 0.0.0.0 0.0.0.0 10.1.141.4 2

Example -Not Allowed
route Outside 0.0.0.0 0.0.0.0 10.1.14.4 1
route Outside1 0.0.0.0 0.0.0.0 10.1.141.4 1

[Manu381]

Hello,

thanks for you replies

I try this tomorow morning

king regards

[Manu381 · Accepted solution]

so I change the metric of ADSL to 13 in ASDM (edit ADSL interface, find the 'IP Address and route setting' button in general tab , use scroll below) 

and now the prefered interface is well the FIBER interface 👍