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Marcel van Dorp
Beginner

Strange HWIC-3G-GSM behavior (1841 & Vodafone)

                   Hi All,

We're experiencing some strange interface behavior on two 3G connection on the same 1841 router. The cellular interfaces go into reset exactly two minutes after it came and this repeats continously. See below output when we are doing a ping over that interface.

We've already updated the firmware of the cellular modems but to no change in results, now we have absolutely no idea what the cause of this may be..  :S

Router is running 15.3 (M4) I believe.

router#ping 208.67.220.220 repeat 1000000

Type escape sequence to abort.

Sending 1000000, 100-byte ICMP Echos to 208.67.220.220, timeout is 2 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!

*Nov 19 13:17:35.351: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to down.

*Nov 19 13:17:37.347: %LINK-5-CHANGED: Interface Cellular0/1/0, changed state to reset...

*Nov 19 13:17:42.347: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to down......

*Nov 19 13:17:55.339: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to up

*Nov 19 13:17:55.379: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to up..!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*Nov 19 13:19:55.347: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to down.

*Nov 19 13:19:57.347: %LINK-5-CHANGED: Interface Cellular0/1/0, changed state to reset...

*Nov 19 13:20:02.347: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to down......

*Nov 19 13:20:15.339: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to up

*Nov 19 13:20:15.383: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to up..!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*Nov 19 13:22:15.351: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to down.

*Nov 19 13:22:17.347: %LINK-5-CHANGED: Interface Cellular0/1/0, changed state to reset...

*Nov 19 13:22:22.347: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to down......

*Nov 19 13:22:35.339: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to up

*Nov 19 13:22:35.379: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to up..!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*Nov 19 13:24:35.347: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to down.

*Nov 19 13:24:37.347: %LINK-5-CHANGED: Interface Cellular0/1/0, changed state to reset...

*Nov 19 13:24:42.347: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to down......

*Nov 19 13:24:55.339: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to up

*Nov 19 13:24:55.379: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to up..!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!.

Success rate is 98 percent (2633/2682), round-trip min/avg/max = 120/168/1152 ms

router#

Thanks

Marcel

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