10-21-2004 06:26 AM - edited 03-02-2019 07:27 PM
Does anyone knows how to configure the Router 1721 to switch automatically from BRI 1(ADSL) to BRI0 (ISDN) in case of ADSL downtime?
10-21-2004 07:53 AM
Assuming you are using dialer profiles you configure the your backup interface command on your primary dialer interface.
So if your primary adsl is dialer 1, and dialer 2 is for ISDN, you add "backup interface dialer 2" on your dialer 1 interface
The following link go's into more details:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800ca664.html
Rgds
PD
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