NTP servers

Similar Questions

• What are the consequences of the NTP servers configuration in EBIPA to Interconnect bays?

  Hello

  I want my VirtualConnect devices in a c7000 G3 case addresses EBIPA to install.

  I see a difference against the parameters of EBIPA for peripheral bays: settings in the EBIPA bays to interconnect, you have the option to add NTP servers.

  What happens if I Don t write NTP servers in there? Where the VirtualConnect will get date/time information. I find nothing in the manuals from HP.

  What are the recommendations, to write about the EBIPA settings the same NTP servers used for each speaker?

  Thank you

  Hello diegomartin,

  You really need ot ask this question on the HP Enterprise business (Forum Pro) community.

  Here is the link to the server of this forum section. I guess you'd look in blade systems?

  http://h30499.www3.HP.com/T5/servers/CT-p/ITRC-122

  You may need to re-register to post here.

  Good luck.

• Altered in Cisco Unity Connection and cancelled permits NTP server

  I use Cisco Unity Connection 8.6.1 and cancelled my Inbox licenses.  A few days ago I noticed that the timestamp of the voicemails was different from what said our CUCM so immediately, I assume that the NTP servers were different.  I was correct and made the change on our server CUC.  I came back to add another user, a few days later and was motivated that I didn't have enough licenses.  After researching on it after the fact, it seems that this happened because the value of NTP server is one of the values that cannot change with the current license, and I'm in a State of the trial for 30 days (24 days left now).  Now my problem is that I don't remember what would replace this NTP server.  How can I fix this problem?

  Hi William,.

  I guess the connection of the unit is installed on the virtual machine and therefore license MAC is here

  You can get the rehost license by launching the mail to [email protected] / * /

  regds,

  aamns

• Cutting of NTP on specific interfaces

  Hello

  I want to be able to use our HQ Internet like NTP source router for the rest of our network equipment - including other Internet routers at remote sites. It is all set up and everything works fine, but I would like to disable NTP on external face interfaces for remote sites...

  In my view, that which will achieve...

  config t

  int g0/0/0 (interface in the face of Internet)

  Disable NTP

  !

  In this way, I'll still be able to get my info the Inter HQ routers IP MGMT NTP.

  But,

  for the HQ Internet router, I need to be able to access the Internet NTP servers we get our clock info from. On this router 'disable ntp' on the interface-oriented Internet break NTP. What do I need set up on the router internet HQ-oriented interface Internet to stop the router from a source to anyone on the Internet, but still be able to get info of the clock of the Internet and act as a source for the rest of our network equipment?

  I thought it would work "no source ntp interfaceinterface", but the command is not supported on the 4400 s I guess that.

  Thank you, Pat

  Your configuration looks good. Access group "peer", it's the only one that actually allows a router to BE synchronized, so to speak, that is, influenced by other devices. The "serve only" allows (HQ router in your case) to update others, but not BE updated or influenced by others. Who is?

  So that the router HQ to reject applications for IPs defined Internet, but always to accept updates from these IPs, the group 'serve only"access must be configured on the routers of the Internet. Think about it, it is almost certain that these routers have configured this anyway, because they won't have their time synchronized with you, or any other customer endorsement.

• Updated NTP on the 3850

  Hello

  I have a 3850 with NTP configured switch. The connection to the server has been disconnected briefly but after reconnecting NTP was not synchronized.

  It would probably start working if I delete and add the median of declaration of the ntp server. But y at - it means to make it work again without having to reconfigure the switch (removing and adding the ntp server)

  Model switch SW Version SW Image Mode ports
  ------ ----- ----- ---------- ---------- ----
  * WS-C3850-24 1, t 32 03.06.03.E cat3k_caa-universalk9 BUNDLE

  Clock SWITCH #show
  . 09:22:29.466 Thu Sep 15 2016 Greenl
  SWITCH #show ntp ass

  address Ref clock st when poll reach delay offset disp
  ~ 172.20.5.49. INIT. 16 127137 1024 0 0.000 0.000 15937.
  172.28.10.44 INIT. 16-1323-1024 0 0.000 0.000 16000.
  * sys.peer, # selected, + candidate - outlyer, x falseticker, ~ configured
  State SWITCH #show ntp
  Clock is unsynchronized, 16, no reference clock stratum
  nominal freq is 250,0000 Hz, real freq is 250,0050 Hz, precision is 2 * 10
  NTP uptime 2378908500 (1/100 of a second), the resolution of 4000
  reference time is DB831257. C624DF50 (22:03:35.774 Greenl kills 13 2016 Sep)
  the clock offset is 0,0000 msec, delay of root is 0.00 msec
  root dispersion is 1.81 msec, the peer dispersion is 0.00 msec
  loopfilter State is 'CTRL' (Normal controlled loop), drifting is - 0.000020078 s/s
  the system polling interval is 64, update was 127142 sec ago.
  SWITCH #.

  The original post seems to suggest that NTP was working. But I agree with Leo that a starting point would be to specify if the NTP work properly with the current configuration.

  The fact that the reference clock shows INIT indicates that this option has not communicated successfully with the NTP servers. Then maybe another troubleshooting step would be to check the connectivity to the servers.

  HTH

  Rick

• How to check on UCSM NTP synchronization?

  Hi all

  Just my feet wet with UCS and have our first basically installation system.

  However, I have defined 2 NTP servers in UCSM but it doesn't seem to work.   I have hunted for an equivalent display status ntp IOS, but so far, have not found a.

  Is there a way to check the status of time synchronization? Or would be seized errors in a newspaper anywhere?

  Thank you

  Anthony

  Anthony

  YEW running that controls several aircraft viz NXOS and UCSM local administration.

  UCSM is the only way to configure the system while others are read-only.

  You can check the status of the plan NXOS ntp.

  To do this, ssh for the VIP.

  connect nxos

  At this point, you are connected to the NXOS plan and view orders / debugs are applicable.

  'See the ntp?' and you will see the options as the State and peers.

  Thank you

  -Matt

• Configuring NTP on IDS4215

  Hello

  I'm new in the environment of the IDS, we are planing to configure the NTP server on the case IDS 4215.

  I have a completed order for the same ones mentioned below.

  probe # configure terminal

  host service Sensor (config) #.

  NTP-option enable Sensor(config-HOS) #.

  Sensor(config-HOS-ENA) # ip_address key id ID ntp servers

  now the problem for me is that I don't have the key id & key-value for my ntp server.

  Can someone help me NTP configuration with the key - id information.

  Unfortunately 8,0000 E3 is quite old and does not support unauthenticated ntp.

  The train of 5.1 was end of Saled and is approaching quickly end of life / end of Support of Signature:

  http://www.Cisco.com/en/us/prod/collateral/vpndevc/ps5729/ps5713/ps2113/end_of_life_notice_c51-468830.html

  Last date for Signatures for version 5.1 is on 24 October of this year.

  If you only 4 months rest before you would have to spend to 6.0 to continue to get the updates of the signature.

  The 4215 is also end of Saled, but it is end of Signature support is not until July 29, 2011.

  http://www.Cisco.com/en/us/prod/collateral/vpndevc/ps5729/ps5713/PS4077/ps5367/end_of_life_notice_for_cisco_ids_4215_sensor.html

  Version 6.0 is the latest version supports ID-4215, Signature updates to 6.0 for the IDS-4215 will continue at least until July 29, 2011.

  So if you upgrade to 6.0 now, you always 2 years more signature updates before that you have to purchase a new sensor.

  Version 6.0 (5) E3 supports the option of ntp unauthenticated.

  So, you will want to plan for an upgrade to 6.0 some time in the next four months.

  In the meantime, you'll need to use authenticated ntp keys.

  If you have access to a router you can try to use the router as a server temporary inbetween.

  The router would be configured to get its time for your ntp server. Talk to your administrator network on how to implement.

  Then configure the router to also be a server with a key of authenitcated.

  Here is a section of the CLI Guide explaining how to set up the router as key authenticated ntp server:

  http://www.Cisco.com/en/us/docs/security/IPS/7.0/Configuration/Guide/CLI/cli_setup.html#wp1035649

  The sensor would be configured to use the router as ntp server by using this key.

  This would be a temporary workaround until you can get upgraded to 6.0.

• (S) synchronization NTP on SG300 access switches?

  Hello

  In our network, two domain controllers are configured as central (S) NTP servers. Mode Layer 3 it is quit easy to sync with these (S) NTP servers. But what is actually the best approach for access switches mode layer 2, which are connected to the layer 3 switch? The only IP address, they are part of the management VLAN ID 1, which is not routable. I actually need something like a show without having to put a NTP server in management vLAN.

  Boudewijn

  Is your switch to level 3 of the entry door for your VLAN? VLAN 1 can be routed, the only restriction to this would be if you don't have no roads to vlan1. If your NTP server and Layer 2 switch points their default gateway to your layer 3, level 3 switch switch can route traffic across this way.

  It really depends on how you have the network configuration and what device manages routing for you on the local network.

• The XML parser error when you set the NTP in UCS Server

  When you try to configure NTP servers (using IP addresses) when http would be in UCS C220 servers, received an XML parser error and NTP server configuration did not.  Ideas?

  Hey John,

  You can set the NTP CLI/SSH servers to host?

  -Wes

• Can I use the same NTP server configured in the firewall to guard

  I configured the NTP server in my VCSC Expressway it synchronized correctly, but I'm unable to configured in my VCSC Gatekeeper with the same NTP server address that is configured in VCScExpresway.

  Please suggest

  Hello!

  You use in.pool.ntp.org. This isn't a single ntp server, there is a pool of servers,

  then you might see different ntp servers, and they can also change and sometimes

  It can also happen that yo will get a limit down.

  If I get him here, I have for exmple get:

  $host in.pool.ntp.org
  in.pool.ntp.org has address 113.30.137.34
  in.pool.ntp.org has address 119.226.101.131
  

  and a little later, I got:

  $ host in.pool.ntp.org
  in.pool.ntp.org has address 123.108.225.6
  in.pool.ntp.org has address 125.62.193.121
  

  In any case you want to configure multiple NTP server addresses.

  So, if you want to use this area (India):

  * You must configure these three host names as described here: http://www.pool.ntp.org/zone/in

  * See who works for DNS resolution (which may also be the problem here)

  * you have a suitable internet access

  * see that the firewall is open to 123 to any host on the internet

  * If you are not in India use a different area

  On the VCS under Maintanance > tools > utilities you could for example check if you can resolve DNS and traceroute/ping external hosts on network.

  The other option is to find at least 2 NTP servers you know and that you can use and set up.

  then you could lock the specific IPS in the firewall, otherwise it should be open to all.

  Its also not hard to set up your own server NTP, incidentally.

• Cisco ISE synchronization and NTP server

  I am currently implementing Cisco ISE to our customer.

  But having a little problem Cisco ISE cannot synchronize with NTP server.

  Keep in mind, NTP servers in AD.

  Currently, Cisco ISE synchronize just at the local level.

  Cisco ISE implemented distributed mode, when there are two Cisco ISE installed on VMware (Administration & monitoring primary & secondary node), and another is the device (political Service node).

  As a result of it might not sync server NTP and the ISE of Cisco, Cisco ISE often OUT-OF-SYN.

  Is there a solution for this problem?

  Gandhi,

  This is a known issue, I have crossed upwards and have not read that you use AD as your NTP server, there have been problems with integration of the ISE and ACS with AD as their ntp source, please use another device like sources ntp, for example a router.

  Thank you

  Tarik Admani
  * Please note the useful messages *.

• PIX as a NTP server for inside networks

  I currently have my PIX receiving NTP of a trusted external source. I would put my switches to pick up their time to the PIX. I don't see anywhere that it is possible. I have tried using my interior of interface as the source server for the customers, but they never receive NTP messages and remain unsynchronized.

  Our PIX is the internal common points for each of our offices (they create our web of connections Internet VPN tunnels) and are the logical choice for traffic NTP ditribute throughout our org.

  Can someone answer for sure that PIX will act as NTP servers when it is called by clients configured for example:

  Insside source NTP server (PIX1_IP)

  This works when PIX1_IP is actually all other(non-PIX) NTP internal source.

  For security reasons, the PIX is only an NTP client. Is not a NTP server and response to queries from the NTP clients. PIX does not meet the NTP queries. If you enable logging on the PIX you can see a syslog message

  % 3 PIX-610001: int_name of interface for the NTP daemon: package refused to

  IP_addr

  OR similar.

  Hope that helps!

• Using the host or server NTP clock

  For a small laboratory where I don't have a dedicated NTP infrastructure or an NTP server to point to, is better to have orchestrator use the time of the host or an external NTP server like 0.us.pool.ntp.org?  (My esxi hosts pointing 0.us.pool.ntp.org)

  Thank you!

  For me, I have one or two devices on my network aimed at the internet NTP. Then internally I show all these NTP servers that I have internally.

  For my suggestion, I would use your esxi host and I have VMware tools synchronize the time on your virtual machines.

• No NTP synchronization

  I have two different boxes of ESXi and I configured NTP on both. Or synchronizes time despite both claiming NTP is running. I stopped and restarted the service and tried the two IP addresses and host names. According to the firewall, the port is open when the service is running. If I set the time manually roughly outside right now, the vSphere client will display the time in red, but I don't know what that means.

  I went to "time.nist.gov" because apparently used to synchronize our ntp servers in-house without the version indicator 3. We are supposed to use the servers of NASA, but I don't want to have command line change each ESXi ntp client.

• ESXi 5.1 configured as a NTP server, do not sync with the Local PC

  I have a 5.1 ESXi server configured as an NTP server and a Windows Server 2008 R2 local PC that are not sync.  I understand well, it is not recommended for ESXi, but I read [1] [2] that, whenever an ESXi server is running as a client, it also acts as a server, so I enabled as a NTP client in vSphere by ticking the NTP client, adding some servers to the server list, and then click on run, and I also activated the 123 incoming/outgoing port by adding the shell of ESXi firewall settings.

  I'm pretty sure it isn't a firewall problem.  I completely disabled the firewall on my local PC.  Running "w32tm keyboardists computers: - IP address of the server -" give me the time of the server and running the software NTPQuery gives me an answer back on port 123 of the server time.

  I tried:

  - Date/time settings (right-click on notification area-> set date/time-> Internet time-> set as the IP address of the server) - sync fails (* an error has occurred while Windows timed with - server IP-*)

  - Group Policy Editor (Computer Configuration\Administrative Templates administration\systeme\service Time Service, currently disabled but because I heard this causes problems) - synchronization fails

  - The registry editor (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\W32Time\settings) - synchronization fails

  - Command prompt, using:

  w32tm /config /manualpeerlist:-IP of server- /syncfromflags:MANUAL /reliable:yes /update
  net stop w32time && net start w32time
  w32tm /resync /rediscover
  
  
  

  This updates the registry properly, but the outputs "the computer did not resync because no time data was available."  And when I use the command "w32tm/query/source" the source is always "The local CMOS clock."

  Here is the output from w32tm/query /configuration

      [Configuration]
  
  
      EventLogFlags: 2 (Local)
      AnnounceFlags: 5 (Local)
      TimeJumpAuditOffset: 28800 (Local)
      MinPollInterval: 10 (Local)
      MaxPollInterval: 15 (Local)
      MaxNegPhaseCorrection: 3600 (Local)
      MaxPosPhaseCorrection: 3600 (Local)
      MaxAllowedPhaseOffset: 1 (Local)
    
      FrequencyCorrectRate: 4 (Local)
      PollAdjustFactor: 5 (Local)
      LargePhaseOffset: 50000000 (Local)
      SpikeWatchPeriod: 900 (Local)
      LocalClockDispersion: 10 (Local)
      HoldPeriod: 5 (Local)
      PhaseCorrectRate: 1 (Local)
      UpdateInterval: 360000 (Local)
  
  
    
      [TimeProviders]
    
      NtpClient (Local)
      DllName: C:\windows\system32\w32time.dll (Loca
      Enabled: 1 (Local)
      InputProvider: 1 (Local)
      AllowNonstandardModeCombinations: 1 (Local)
      ResolvePeerBackoffMinutes: 15 (Local)
      ResolvePeerBackoffMaxTimes: 7 (Local)
      CompatibilityFlags: 2147483648 (Local)
      EventLogFlags: 1 (Local)
      LargeSampleSkew: 3 (Local)
      SpecialPollInterval: 900 (Local)
      Type: NTP (Local)
      NtpServer: -IP of server-,0x1 (Local)
    
      NtpServer (Local)
      DllName: C:\windows\system32\w32time.dll (Loca
      Enabled: 1 (Local)
      InputProvider: 0 (Local)
      AllowNonstandardModeCombinations: 1 (Local)
  
  
  

  Any ideas?  Thanks in advance.

  Your ESXi server response shows that the leap indicator is 3 and the server stratum is 0.

  This means that ESXi NTP server is synchronized and unable to provide a valid reference time to customers.

  We recommend that you configure your ESXi host with valid upstream NTP servers such as:

  0.vmware.pool.ntp.org,1.vmware.pool.ntp.org and 2. VMware.pool.ntp.org

  as described in the KB article or alternatively your internet service provider NTP servers.

  Although not recommended, you can configure ESXi to allow a reference time by using the own system clock

  If you can not configure ESXi to synchronize to external NTP servers upstream.

  UI, tab Configuration, using software (time setting), properties, Options, and NTP settings.

  Specify "127.127.1.0" as your single NTP server. Don't forget to check the box "restart NTP service to apply the changes.

  then click OK twice to close the dialog boxes. Wait a few minutes for NTP sync, then try your test.

  According to RFC 4330, NTP-SNTP (Simple) customers must not use time in a package of NTP response if the

  stratum returned is 0 (and the leap indicator is 3). Apparently, your client Windows NTP Simple is more

  the RFC.