Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

pri isdn backup

hello,

i have install a router 7200 with a serial and E1 interfaces.

i configure the dialer interface as a backup of serial interface, but whene i shutdown the serial the dialer stay in standby mode.

can any one help me pleaz

2 REPLIES
Silver

Re: pri isdn backup

Choose another interface that does go down when the primary dies

Use either floating static routes or dialer watch for backup.

Regards,

Dharmesh Purohit

Hall of Fame Super Silver

Re: pri isdn backup

imane

What you are encountering is a normal aspect of configuring backup interface. When you configure a primary interface with backup interface pointing to something like ISDN the ISDN goes into a special standby state and will not activate until there is a failure of the primary. And shutdown does not qualify as a failure. You must actually make the primary go into line protocol down state (not administratively down) for the backup to activate.

This is one of the reasons why many people are using floating static routes or dialer watch for backup purposes instead of using the backup interface concept.

HTH

Rick

90
Views
0
Helpful
2
Replies
CreatePlease to create content