Backup interface never comes up.
Hi, I am doing a study on DDR. On my router, I configured the bri0 interface, and it works fine. The router can place a call to the other end and traffic passes through perfectly. (It means all the isdn interface and dialer configuration are correct). My problem is, once i placed the interface as a backup for another serial interface (frame relay ), the bri0 is placed in standby mode automatically and even the layer 1 and layer 2 for the bri0 are administratively shutdown automatically. I tried to shutdown the primary frame relay interface and the backup bri0 never comes up. I tried it on different routers with the same result. Is this behavior normal or I missed something? Thank you very much for advice. Jim. Attached is my configuration sample: int s0 encapsulation frame-relay ip address 10.1.1.1 255.255.255.0 backup delay 10 30 backup interface bri0 no shut int bri0 encapsulation ppp ip address 10.1.2.1 255.255.255.0 isdn switch-type basic-ni1 isdn spid1 12345678 1234 isdn spid2 23456789 2345 dialer-group 1 dialer map ip 10.1.2.2 broadcast 6789 no shut .. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Backup interface never comes up.
the SHUT command on your primary interface will not bring the backup interface up. so what you are seeing is definitely normal. if your backup interface DID come up from a shut command on your primary interface, then I'd say you have a broken router! try using a floating static route instead...or pull the cable off the serial port -brad "James Xie" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > I am doing a study on DDR. On my router, I configured the bri0 interface, and > it works fine. The router can place a call to the other end and traffic > passes through > perfectly. (It means all the isdn interface and dialer configuration are > correct). > > My problem is, once i placed the interface as a backup for another serial > interface > (frame relay ), the bri0 is placed in standby mode automatically and even > the layer 1 > and layer 2 for the bri0 are administratively shutdown automatically. I > tried to shutdown > the primary frame relay interface and the backup bri0 never comes up. > > I tried it on different routers with the same result. > > Is this behavior normal or I missed something? > > Thank you very much for advice. > > Jim. > > Attached is my configuration sample: > > int s0 > encapsulation frame-relay > ip address 10.1.1.1 255.255.255.0 > backup delay 10 30 > backup interface bri0 > no shut > > int bri0 > encapsulation ppp > ip address 10.1.2.1 255.255.255.0 > isdn switch-type basic-ni1 > isdn spid1 12345678 1234 > isdn spid2 23456789 2345 > dialer-group 1 > dialer map ip 10.1.2.2 broadcast 6789 > no shut > .. > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Backup interface never comes up.
I think that this is a normal behaviour. The bri interface works until i put the backup interface statement at s0. So it must be that the back up statment cause the interface to be in standby ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Backup interface never comes up.
Since this is frame relay, an easy way to test it is to change your LMI type on the interface to a type not being used and within 10/15 seconds the interface will go down and the backup interface should go active. Also, Backup does not work on multipoint sub-interfaces with the loss of a PVC. JOE CCNP, CCDP, and a few other things... CCIE Lab - May 27/28 "James Xie" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > I am doing a study on DDR. On my router, I configured the bri0 interface, and > it works fine. The router can place a call to the other end and traffic > passes through > perfectly. (It means all the isdn interface and dialer configuration are > correct). > > My problem is, once i placed the interface as a backup for another serial > interface > (frame relay ), the bri0 is placed in standby mode automatically and even > the layer 1 > and layer 2 for the bri0 are administratively shutdown automatically. I > tried to shutdown > the primary frame relay interface and the backup bri0 never comes up. > > I tried it on different routers with the same result. > > Is this behavior normal or I missed something? > > Thank you very much for advice. > > Jim. > > Attached is my configuration sample: > > int s0 > encapsulation frame-relay > ip address 10.1.1.1 255.255.255.0 > backup delay 10 30 > backup interface bri0 > no shut > > int bri0 > encapsulation ppp > ip address 10.1.2.1 255.255.255.0 > isdn switch-type basic-ni1 > isdn spid1 12345678 1234 > isdn spid2 23456789 2345 > dialer-group 1 > dialer map ip 10.1.2.2 broadcast 6789 > no shut > .. > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Backup interface never comes up.
You could also shut down the serial interface on the far end of the link so that the interface goes into a down/down state. Brad is right, administratively shutting down an interface will not trigger the backup link to come up. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Brad Ellis Sent: Thursday, May 25, 2000 7:13 PM To: [EMAIL PROTECTED] Subject: Re: Backup interface never comes up. the SHUT command on your primary interface will not bring the backup interface up. so what you are seeing is definitely normal. if your backup interface DID come up from a shut command on your primary interface, then I'd say you have a broken router! try using a floating static route instead...or pull the cable off the serial port -brad "James Xie" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > I am doing a study on DDR. On my router, I configured the bri0 interface, and > it works fine. The router can place a call to the other end and traffic > passes through > perfectly. (It means all the isdn interface and dialer configuration are > correct). > > My problem is, once i placed the interface as a backup for another serial > interface > (frame relay ), the bri0 is placed in standby mode automatically and even > the layer 1 > and layer 2 for the bri0 are administratively shutdown automatically. I > tried to shutdown > the primary frame relay interface and the backup bri0 never comes up. > > I tried it on different routers with the same result. > > Is this behavior normal or I missed something? > > Thank you very much for advice. > > Jim. > > Attached is my configuration sample: > > int s0 > encapsulation frame-relay > ip address 10.1.1.1 255.255.255.0 > backup delay 10 30 > backup interface bri0 > no shut > > int bri0 > encapsulation ppp > ip address 10.1.2.1 255.255.255.0 > isdn switch-type basic-ni1 > isdn spid1 12345678 1234 > isdn spid2 23456789 2345 > dialer-group 1 > dialer map ip 10.1.2.2 broadcast 6789 > no shut > .. > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Backup interface never comes up.
Also the router is smart enough not to dial a backup interface if you shut the primary interface down on the router. You need to pull the cable or shutdown the far end. -- Dave CCNP/CCDP/CCAI "James Xie" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi, > > I am doing a study on DDR. On my router, I configured the bri0 interface, and > it works fine. The router can place a call to the other end and traffic > passes through > perfectly. (It means all the isdn interface and dialer configuration are > correct). > > My problem is, once i placed the interface as a backup for another serial > interface > (frame relay ), the bri0 is placed in standby mode automatically and even > the layer 1 > and layer 2 for the bri0 are administratively shutdown automatically. I > tried to shutdown > the primary frame relay interface and the backup bri0 never comes up. > > I tried it on different routers with the same result. > > Is this behavior normal or I missed something? > > Thank you very much for advice. > > Jim. > > Attached is my configuration sample: > > int s0 > encapsulation frame-relay > ip address 10.1.1.1 255.255.255.0 > backup delay 10 30 > backup interface bri0 > no shut > > int bri0 > encapsulation ppp > ip address 10.1.2.1 255.255.255.0 > isdn switch-type basic-ni1 > isdn spid1 12345678 1234 > isdn spid2 23456789 2345 > dialer-group 1 > dialer map ip 10.1.2.2 broadcast 6789 > no shut > .. > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
