[ntp:questions] ntp peer association in VLAN query

Danny Mayer mayer at ntp.isc.org
Mon Jan 19 15:09:19 UTC 2009


kiran shirol wrote:
> Hi NTP experts,
> 
> I am not able to establish ntp peer adjaceny with secondary ip address on 
> vlan interface.
> 
> I noticed that when peer sends a NTP message to Device Under Test's(DUT) 
> vlan interface secondary address, DUT would respond the message with source 
> address set to vlan interface's primary address instead of its secondary 
> address, and the peer has silently discarded such message from DUT.
> 
> Is this expected ? I am not able to understand why is the peer discarding 
> such a packet.
> 
> Can someone explain the behavior of NTP in VLANs. Any help I will be 
> grateful.
> 
> Thanks
> Kiran Shirol 

Can you provide an example? It's hard to understand with words though I
think I get your meaning. I may have an answer but I would like to see
some IP addresses on what got sent what the vlan IP addresses are and
how it was sent and what was received.

Danny



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