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New Member

How do you set up sntp on the 1721 routers??

we are trying to get a 1721 router with ip ver12.2(8)T to share ntp with a cat 4006 L3 module. The L3 module points to a ntp master outside our network and works fine. I do a debug sntp packets on the 1721 and see sends and recieve packets from the L3 module. But the time does not update and the sh clock detail command displays no time source. Any ideas ??????

4 REPLIES
New Member

Re: How do you set up sntp on the 1721 routers??

you have to mention on the 1721 router the: clock timezone gmt ??

on the cat try this command: ntp peer xx.xx.xx.xx

New Member

Re: How do you set up sntp on the 1721 routers??

Hello!

Ya I have put the timezone in on both the rsm and the 1721. I haven't put ntp pere in. Why would you need this ??

thanks. : ))

New Member

Re: How do you set up sntp on the 1721 routers??

Which version of SNTP you are using? Secondly, are there any restrictions on sntp server?

Regards

Vijay

New Member

Re: How do you set up sntp on the 1721 routers??

Hi Vijay!

Thanks for the response.

We are running version 2 of SNTP on a 1721. I have ntp running on a cat4006 rsm with no accesslist or anything. Here is what I see when I do a "show sntp" on the 1721.

SMC-JUN-R1#sh sntp

SNTP server Stratum Version Last Receive

10.160.245.245 16 2 never

The ip address above is a loopback 0 interface on our rsm in the cat4006. If I do a debug sntp packets on the 1721, I see the following. It looks like its recieveing but when I do a sh clock detail this is what comes up.

Have you seen this ???

sh clock detail

SMC-JUN-R1#sh clock detail

*11:47:49.624 eastern Sun Mar 7 1993

No time source

debug sntp packets

SMC-JUN-R1#

*Mar 7 16:45:16.196: Sending SNTP packet to 10.160.245.245

*Mar 7 16:45:16.196: xmt AF44A51C.3243ED4A (11:45:16.196 eastern Sun Mar 7 199

3)

*Mar 7 16:45:16.252: Received SNTP packet from 10.160.245.245, length 48

*Mar 7 16:45:16.252: leap 3, mode 4, version 2, stratum 0, ppoll 16

*Mar 7 16:45:16.252: rtdel 00002226, rtdsp 00000765, refid C0052928 (192.5.41.

40)

*Mar 7 16:45:16.252: ref C142C7EB.63024972 (07:54:03.386 eastern Mon Sep 30 20

02)

*Mar 7 16:45:16.252: org AF44A51C.3243ED4A (11:45:16.196 eastern Sun Mar 7 199

3)

*Mar 7 16:45:16.252: rec C1611F90.F9ADDF20 (08:16:00.975 eastern Wed Oct 23 20

02)

*Mar 7 16:45:16.252: xmt C1611F90.F9B124D1 (08:16:00.975 eastern Wed Oct 23 20

02)

*Mar 7 16:45:16.256: inp AF44A51C.40CA7CE3 (11:45:16.253 eastern Sun Mar 7 199

3)

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