[c-nsp] ACE4710 - NTP Version

[Antonio Soares]

Tcdump confirmed that the ACE4710 uses NTPv2. Strange, isn't it ?

Getting back to my problem, I wasn't able to reproduce the issue with ntpd
running on an Ubuntu Server. This means that most likely there is something
wrong with the Oscilloquartz appliance.



Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares at netcabo.pt

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Antonio Soares
Sent: quarta-feira, 15 de Dezembro de 2010 20:27
To: 'Nick Hilliard'; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] ACE4710 - NTP Version

NTPv2. This is what I see in a router with "debug ntp packet detail"
configured with "ntp master 2":

Dec 15 20:21:55.694: NTP message received from 10.10.10.254 on interface
'FastEthernet0/0' (10.10.10.1):
Dec 15 20:21:55.694: 
 NTP Header:
   Leap = 00, Version = 2, Mode = 3,
   Stratum = 3,
   Poll Interval = 6,
   Precision = -20,
   Root Delay = 0.28,
   Root Dispersion = 0.742,
   refid = 10.10.10.1,
   Last update reftime = 3501433252.2768737782,
   Originated time = 3501433313.2990220735,
   Received time = 3501433313.2992084671,
   Transmit time = 3501433315.2995658084.
 Hexadecimal equivalent (length = 48):
   0000: 13 03 06 EC 00 00 00 1C
   0008: 00 00 02 E6 0A 0A 0A 01
   0010: D0 B3 A1 A4 A5 07 95 F6
   0018: D0 B3 A1 E1 B2 3B 25 BF
   0020: D0 B3 A1 E1 B2 57 96 BF
   0028: D0 B3 A1 E3 B2 8E 1D 64

The 10.10.10.254 is the ACE. The version = 2 field must mean NTPv2. I see
that field = 4 with a router as a client.


Regards,

Antonio Soares, CCIE #18473 (R&S/SP)
amsoares at netcabo.pt


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Nick Hilliard
Sent: quarta-feira, 15 de Dezembro de 2010 19:56
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] ACE4710 - NTP Version

On 15/12/2010 19:22, Antonio Soares wrote:
> I've just made some tests with A4(1.0) and A3(2.6) and I verified that the
> ACE4710 uses NTPv2.

ntp stratum 2 or ntp version 2?  I hope ntp version 4, as that's the 
current version as of 2004.  ntp version 2 dates back to 1989.

NTP stratum 2 is completely different.

Nick

> Can anyone confirm this ?
>
> I'm asking this because I have a customer where the ACE only synchronizes
> with a Stratum 1 Server but not with a Stratum 2 Server. Maybe there is no
> relation between the two things but these are facts.
>
> I made some tests with a router as a NTP Server and wasn't able to
reproduce
> the problem. The customer's Server is an Oscilloquartz appliance.
>
> Any hints ?
>
> Thanks.
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S/SP)
> amsoares at netcabo.pt
>
>
>
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