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New Member

LOF and RAI detected in my PRI ISDN Backup link

Hi guys,

I'm regularly getting these log messages on my Cisco router for the PRI ISDN backup link.

Here's the log:

*Sep 28 01:46:14.904: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down (LOF detected)

*Sep 28 01:46:14.908: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0 changed to down

*Sep 28 01:46:16.896: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to down

*Sep 28 01:46:51.496: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

down

*Sep 28 01:46:53.500: %LINK-3-UPDOWN: Interface Dialer2, changed state to up

*Sep 28 01:48:18.900: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to up

*Sep 28 01:48:19.908: %ISDN-6-LAYER2UP: Layer 2 for Interface Se1/0:15, TEI 0 changed to up

*Sep 28 01:48:20.900: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to up

*Sep 28 01:48:31.496: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

up

*Sep 28 01:48:31.504: Di2 DDR: dialer shutdown complete

*Sep 28 01:48:33.504: %LINK-5-CHANGED: Interface Dialer2, changed state to standby mode

*Oct 2 00:51:14.861: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down (LOF detected)

*Oct 2 00:51:14.865: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0 changed to down

*Oct 2 00:51:16.857: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to down

*Oct 2 00:51:41.497: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

down

*Oct 2 00:51:43.501: %LINK-3-UPDOWN: Interface Dialer2, changed state to up

*Oct 2 00:52:25.469: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to up

*Oct 2 00:52:26.481: %ISDN-6-LAYER2UP: Layer 2 for Interface Se1/0:15, TEI 0 changed to up

*Oct 2 00:52:27.469: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to up

*Oct 2 00:53:01.497: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

up

*Oct 2 00:53:01.505: Di2 DDR: dialer shutdown complete

*Oct 2 00:53:03.505: %LINK-5-CHANGED: Interface Dialer2, changed state to standby mode

*Oct 2 04:32:26.968: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down (LOF detected)

*Oct 2 04:32:26.972: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0 changed to down

*Oct 2 04:32:28.964: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to down

*Oct 2 04:32:51.496: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

down

*Oct 2 04:32:53.500: %LINK-3-UPDOWN: Interface Dialer2, changed state to up

*Oct 2 04:32:58.976: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to up

*Oct 2 04:32:59.984: %ISDN-6-LAYER2UP: Layer 2 for Interface Se1/0:15, TEI 0 changed to up

*Oct 2 04:33:00.976: %LINK-3-UPDOWN: Interface Serial1/0:15, changed state to up

*Oct 2 04:33:11.496: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1/0, changed state to

up

*Oct 2 04:33:11.504: Di2 DDR: dialer shutdown complete

*Oct 2 04:33:13.504: %LINK-5-CHANGED: Interface Dialer2, changed state to standby mode

*Oct 2 16:23:33.481: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down (RAI detected)

*Oct 2 16:23:33.485: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0 changed to down

*Oct 2 16:23:34.477: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to up

*Oct 2 16:23:35.485: %ISDN-6-LAYER2UP: Layer 2 for Interface Se1/0:15, TEI 0 changed to up

*Oct 2 16:31:09.317: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down (RAI detected)

*Oct 2 16:31:09.321: %ISDN-6-LAYER2DOWN: Layer 2 for Interface Se1/0:15, TEI 0 changed to down

*Oct 2 16:31:10.313: %CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to up

*Oct 2 16:31:10.325: %ISDN-6-LAYER2UP: Layer 2 for Interface Se1/0:15, TEI 0 changed to up

ROUTER#

Is it being caused by my ISP? How do i check if this errors are caused by the ISP? Please let me know.

Thank you.

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: LOF and RAI detected in my PRI ISDN Backup link

Hi,

Link on Serial0/1/0 is fluctuating. Is the ISDN PRI used as backup for this link ? If yes, its the link which is having problem because of which you are getting logs.

3 REPLIES
New Member

Re: LOF and RAI detected in my PRI ISDN Backup link

It looks like your primary like is fluctuating. Can you share the running config ?

New Member

Re: LOF and RAI detected in my PRI ISDN Backup link

Hi,

Link on Serial0/1/0 is fluctuating. Is the ISDN PRI used as backup for this link ? If yes, its the link which is having problem because of which you are getting logs.

New Member

Re: LOF and RAI detected in my PRI ISDN Backup link

Hi,

Yes, the ISDN PRI is used as backup for the Serial0/1/0. I will check with my ISP to see if the Serial0/1/0 is the culprit here.

Thank you rahul0904!

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