show ntp association detail. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130
IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Combatant 101 Sent: Friday, September 03, 2010 11:06 AM To: 'Juan Pablo Corrales' Cc: [email protected]; [email protected] Subject: RE: NTP HELP!!! Authentication breaking NTP!! Perfect! It worked! I didn't realise you needed to specify the key as trusted to the NTP master! How do I verify that authentication is working? Show ntp status does not indicate if authentication is enabled or not (without doing debug commands) Thanks Sunny From: Juan Pablo Corrales [mailto:[email protected]] Sent: 03 September 2010 15:08 To: Combatant 101 Subject: Re: NTP HELP!!! Authentication breaking NTP!! Hi Sunny, Try to add the following to R1: ntp authenticate ntp trusted-key 1 That should do it. Regards, Juan On Fri, Sep 3, 2010 at 7:00 AM, Combatant 101 <[email protected]> wrote: Hi Guys, If I set up NTP between R1 and R2 it works fine (verified by show ntp status) R1 is NTP MASTER 2 R2 is NTP SERVER R1 However, when I then introduce authentication, it no longer works!!!! Even after a reload!! ANY IDEAS??? Note: Key is identical at both ends! R1 ntp authentication-key 1 md5 143442061C113E39702C62 7 ntp master 2 R2 ntp authentication-key 1 md5 0528560231595A1B4D0146 7 ntp authenticate ntp trusted-key 1 ntp server 10.0.9.1 key 1 show ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**18 reference time is D02B7567.BC07AC6A (13:23:51.734 UTC Fri Sep 3 2010) clock offset is -107.2163 msec, root delay is 76.55 msec root dispersion is 109.88 msec, peer dispersion is 2.40 msec DEBUG on R2 .Sep 3 13:55:00.604: NTP: xmit packet to 10.0.9.1: .Sep 3 13:55:00.604: leap 3, mode 3, version 3, stratum 0, ppoll 64 .Sep 3 13:55:00.604: rtdel 1399 (76.553), rtdsp 1C22 (109.894), refid 0A000901 (10.0.9.1) .Sep 3 13:55:00.604: ref D02B7567.BC07AC6A (13:23:51.734 UTC Fri Sep 3 2010) .Sep 3 13:55:00.604: org D02B7C74.0D4E85E9 (13:53:56.051 UTC Fri Sep 3 2010) .Sep 3 13:55:00.604: rec D02B7C74.AED654A1 (13:53:56.682 UTC Fri Sep 3 2010) .Sep 3 13:55:00.604: xmt D02B7CB4.9AD24C22 (13:55:00.604 UTC Fri Sep 3 2010) .Sep 3 13:55:00.604: Authentication key 1 .Sep 3 13:55:00.684: NTP: rcv packet from 10.0.9.1 to 10.0.5.1 on Vlan1: .Sep 3 13:55:00.684: leap 0, mode 4, version 3, stratum 2, ppoll 64 .Sep 3 13:55:00.684: rtdel 0000 (0.000), rtdsp 0019 (0.381), refid 7F7F0101 (1 27.127.1.1) .Sep 3 13:55:00.684: ref D02B7CAB.EEB6365A (13:54:51.932 UTC Fri Sep 3 2010) .Sep 3 13:55:00.684: org D02B7CB4.9AD24C22 (13:55:00.604 UTC Fri Sep 3 2010) .Sep 3 13:55:00.684: rec D02B7CB4.0889592E (13:55:00.033 UTC Fri Sep 3 2010) .Sep 3 13:55:00.684: xmt D02B7CB4.08AC6A53 (13:55:00.033 UTC Fri Sep 3 2010) .Sep 3 13:55:00.684: inp D02B7CB4.AF3DD50F (13:55:00.684 UTC Fri Sep 3 2010) .Sep 3 13:55:00.684: Authentication key 0 DEBUG on R1 Sep 3 13:53:56.049: NTP message received from 10.0.5.1 on interface 'Vlan1' (10 .0.9.1). Sep 3 13:53:56.049: NTP Core(DEBUG): ntp_receive: message received Sep 3 13:53:56.049: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next acti on is 3. Sep 3 13:53:56.049: NTP Core(DEBUG): ntp_receive: doing fast answer to client. Sep 3 13:53:56.049: NTP message sent to 10.0.5.1, from interface 'Vlan1' (10.0. 9.1). carrylift_computrad# carrylift_computrad# Sep 3 13:55:00.029: NTP message received from 10.0.5.1 on interface 'Vlan1' (10 .0.9.1). Sep 3 13:55:00.033: NTP Core(DEBUG): ntp_receive: message received Sep 3 13:55:00.033: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next acti on is 3. Sep 3 13:55:00.033: NTP Core(DEBUG): ntp_receive: doing fast answer to client. Sep 3 13:55:00.033: NTP message sent to 10.0.5.1, from interface 'Vlan1' (10.0. 9.1). Thanks Sunny Blogs and organic groups at http://www.ccie.net _______________________________________________________________________ Subscription information may be found at: http://www.groupstudy.com/list/CCIELab.html Blogs and organic groups at http://www.ccie.net _______________________________________________________________________ Subscription information may be found at: http://www.groupstudy.com/list/CCIELab.html _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
