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

[Victor Sudakov]

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