[c-nsp] NTP message sent to 224.0.1.1, from interface 'NULL' (0.0.0.0).

Matthew Huff mhuff at ox.com
Tue Jul 2 12:42:25 EDT 2013


I've seen it happen a number of hardware/versions. Especially when you setup a peer on one router, and it will auto-add on another, and the only way to remove it is to do a "no ntp". This kills the NTP process

----
Matthew Huff             | 1 Manhattanville Rd
Director of Operations   | Purchase, NY 10577
OTA Management LLC       | Phone: 914-460-4039

From: Aaron [mailto:dudepron at gmail.com]
Sent: Tuesday, July 02, 2013 12:41 PM
To: Matthew Huff
Cc: Victor Sudakov; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] NTP message sent to 224.0.1.1, from interface 'NULL' (0.0.0.0).

Hmm.
What version of sw are you running?

On Tue, Jul 2, 2013 at 12:38 PM, Matthew Huff <mhuff at ox.com<mailto:mhuff at ox.com>> wrote:
Some ntp configurations will remain under certain conditions.

To clear, remove all ntp configurations including "ntp server xxxx",
Then do "no ntp"

Then re-add configuration


----
Matthew Huff             | 1 Manhattanville Rd
Director of Operations   | Purchase, NY 10577
OTA Management LLC       | Phone: 914-460-4039


> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net<mailto:cisco-nsp-bounces at puck.nether.net>] On Behalf Of Victor Sudakov
> Sent: Tuesday, July 02, 2013 12:31 PM
> To: Aaron; cisco-nsp at puck.nether.net<mailto:cisco-nsp at puck.nether.net>
> Subject: Re: [c-nsp] NTP message sent to 224.0.1.1, from interface 'NULL' (0.0.0.0).
>
> Aaron wrote:
> > Have you set your ntp source interface by any chance?
>
> No.
>
> In fact, now I have removed all NTP configuration except 2 ntp servers,
> but the multicast packets are still being sent:
>
> orlov#
> orlov#sh running-config | i ntp
> ntp server 10.14.129.71
> ntp server 10.14.140.125
> orlov#
> NTP message sent to 224.0.1.1, from interface 'NULL' (0.0.0.0).
> orlov#
>
>
>
>
> --
> Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> sip:sudakov at sibptus.tomsk.ru<mailto:sip%3Asudakov at sibptus.tomsk.ru>
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