RE: FR Backup Over ISDN [7:71332]
Breif example... Your local T1 ciruit to your carrier is Up Up but.. when you do a sh frame-relay pvc your DLCI shows INACTIVE. Hence why the ISDN backup interface command does not take effect since the interface is still up.. even though your frame-relay is not working. This can be caused to certain instability within the cloud.. and not to your local CO's frame-switch... LMI's will exchange every 10 sec from your router to the Frame-Switch and provide a Full PVC status every 60 sec. HTH, Sal Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71334t=71332 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: FR Backup Over ISDN [7:71332]
you need to configure dialer watch for this to work correctly. -Original Message- From: Salvatore De Luca [mailto:[EMAIL PROTECTED] Sent: 25 June 2003 09:42 To: [EMAIL PROTECTED] Subject: RE: FR Backup Over ISDN [7:71332] Breif example... Your local T1 ciruit to your carrier is Up Up but.. when you do a sh frame-relay pvc your DLCI shows INACTIVE. Hence why the ISDN backup interface command does not take effect since the interface is still up.. even though your frame-relay is not working. This can be caused to certain instability within the cloud.. and not to your local CO's frame-switch... LMI's will exchange every 10 sec from your router to the Frame-Switch and provide a Full PVC status every 60 sec. HTH, Sal Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71339t=71332 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: FR Backup Over ISDN [7:71332]
Yes you are correct that backing up the main interface will not help if the remote side of the frame connection goes down, you will still be up up to your local switch. since I think 10.2 or 3 you can backup the subinterface, it recognizes the PVC being down and will initiate you backup though I prefer triggering backups on loss of routes personally. Dave Srivathsan Ananthachari wrote: Hi Group, This is pertaining to FR Backup over ISDN http://www.cisco.com/warp/customer/125/12.html#topic21 It may not help much to back up the main interface because you could lose permanent virtual circuits (PVCs) without the main interface going down. Remember, the protocol is being exchanged with the local Frame Relay switch, not the remote router. I quote this from the aforesaid Cisco link. Can somebody explain as to why it doesn't help much to back up the main interface and how does it lead to the loss of PVCs without the main interface going down. ?? Regards, Srivathsan A -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 Government can do something for the people only in proportion as it can do something to the people. -- Thomas Jefferson Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=71347t=71332 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
