[c-nsp] %NTP: Multicast peer 224.0.1.1 does not exist

[Victor Sudakov]

Yes, it is (sparse-dense-mode).

But how is PIM related to broadcast NTP?

Jared Mauch wrote:
> Is pim enabled on the interface?
> 
> > On Aug 21, 2015, at 3:39 AM, Victor Sudakov <vas at mpeks.tomsk.su> wrote:
> > 
> > Colleagues,
> > 
> > A 7206VXR (NPE-G2) is not sending ntp broadcasts nor multicasts, and I
> > even cannot recofigure ntp settings on an interface (see below). 
> > 
> > Any idea what the problem could be? 
> > 
> > "debug ntp packet|events" does not show anything of interest. tcpdump
> > shows that the router is simply not sending any NTP packets out
> > GigabitEthernet0/2. Google does not even know the phrase "Cannot
> > reconfigure the multicast peer", nor does cisco.com/search
> > 
> > 
> > gw2(config-if)#do sh run int GigabitEthernet0/2
> > Building configuration...
> > 
> > Current configuration : 428 bytes
> > !
> > interface GigabitEthernet0/2
> > [dd]
> > ntp broadcast key 2 destination 10.14.141.255
> > ntp broadcast key 2
> > ntp multicast key 2 ttl 1
> > end
> > 
> > gw2(config-if)#no  ntp multicast key 2 ttl 1
> > %NTP: Multicast peer 224.0.1.1 does not exist
> > gw2(config-if)#no ntp multicast
> > %NTP: Multicast peer 224.0.1.1 does not exist
> > gw2(config-if)#ntp multicast key 2 ttl 6
> > %NTP: Cannot reconfigure the multicast peer.
> > gw2(config-if)#ntp multicast ?
> >  A.B.C.D     Multicast group IP address
> >  X:X:X:X::X  Multicast group IPv6 address
> >  client      Listen to NTP multicasts
> >  key	      Configure multicast authentication key
> >  ttl	      TTL of the multicast packet
> >  version     Configure NTP version
> >  <cr>
> > 
> > gw2(config-if)#ntp multicast 224.0.1.1 ?
> >  key	   Configure multicast authentication key
> >  ttl	   TTL of the multicast packet
> >  version  Configure NTP version
> >  <cr>
> > 
> > gw2(config-if)#ntp multicast 224.0.1.1 ttl 6
> > %NTP: Cannot reconfigure the multicast peer.
> > gw2(config-if)#
> > 
> > -- 
> > Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> > sip:sudakov at sibptus.tomsk.ru
> > _______________________________________________
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> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru