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sntp on hp switch

Posted on 2014-12-08
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Last Modified: 2014-12-15
I have configured the sntp server setting on an HP switch when it didn't have any internet connection.
Now its on the network and has internet, im confused why its not syncing the time.

Ideas?

Can i force?

Thanks
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Question by:CHI-LTD
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16 Comments
 
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Expert Comment

by:Don Johnston
ID: 40487132
It would help to see the config.

I sometimes takes a few minutes to pull the time.  IIRC, the default is 12 minutes.
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LVL 1

Author Comment

by:CHI-LTD
ID: 40487142
its been a week..

here:




















HP-2920-24G-PoEP-Bristol# show running-config

Running configuration:

; J9727A Configuration Editor; Created on release #WB.15.12.0015
; Ver #05:18.41.ff.35.0d:9b

hostname "HP-2920-24G-PoEP-Bristol"
module 1 type j9727a
qos type-of-service diff-services
timesync sntp
sntp unicast
sntp server priority 1 87.124.126.49
sntp server priority 2 178.79.165.21
ip authorized-managers 172.19.0.0 255.255.0.0 access manager
ip authorized-managers 192.168.2.0 255.255.255.0 access manager
ip authorized-managers 172.16.0.0 255.255.0.0 access manager
ip authorized-managers 10.255.255.0 255.255.255.128 access manager
ip authorized-managers 192.168.3.0 255.255.255.0 access manager
ip authorized-managers 10.255.254.0 255.255.255.128 access manager
ip authorized-managers 192.168.100.0 255.255.255.0 access manager
ip authorized-managers 192.168.200.0 255.255.255.0 access manager
ip default-gateway 192.168.2.1
ip route 0.0.0.0 0.0.0.0 192.168.2.1
ip routing
interface 1
   name "to ASA 5505 fe01"
   exit
interface 3
   name "LAN"
   exit
interface 24
   name "Shoretel Phone"
   exit
snmp-server community "public" unrestricted
snmp-server contact "IT"
oobm
   ip address dhcp-bootp
   exit
vlan 1
   name "DEFAULT_VLAN"
   no untagged 21-24
   untagged 1-20,A1-A2,B1-B2
   ip address 192.168.2.4 255.255.255.0
   exit
vlan 20
   name "Voice"
   tagged 21-24
   ip address 192.168.200.4 255.255.255.0
   ip helper-address 192.168.2.17
   ip helper-address 192.168.2.22
   exit
no tftp server
no autorun
no dhcp config-file-update
no dhcp image-file-update
password manager

HP-2920-24G-PoEP-Bristol#
HP-2920-24G-PoEP-Bristol#
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Expert Comment

by:Don Johnston
ID: 40487155
Looks okay to me.

Please post the output of a "show sntp".

Have you tried a different NTP server?
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LVL 1

Author Comment

by:CHI-LTD
ID: 40488371
HP-2920-24G-PoEP-Bristol(config)#
HP-2920-24G-PoEP-Bristol(config)# show sntp

 SNTP Configuration

  SNTP Authentication : Disabled
  Time Sync Mode: Sntp
  SNTP Mode : Unicast
  Poll Interval (sec) [720] : 720
  Source IP Selection: Outgoing Interface


  Priority SNTP Server Address                     Version OOBM Key-id
  -------- --------------------------------------- ------- ---- ----------
  1        87.124.126.49                           3       No   0
  2        178.79.165.21                           3       No   0

HP-2920-24G-PoEP-Bristol(config)#
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 40488372
same server used as another working switch...
0
 
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Expert Comment

by:Don Johnston
ID: 40488386
Should have mentioned this is the previous post.  Can you post the output of a "show sntp statistics".
0
 
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Author Comment

by:CHI-LTD
ID: 40488398
HP-2920-24G-PoEP-Bristol(config)# show sntp statistics
SNTP Statistics

  Received Packets  : 0
  Sent Packets      : 4980
  Dropped Packets   : 0

  SNTP Server Address                              Auth Failed Pkts
  ---------------------------------------          ----------------
  87.124.126.49                                        0
  178.79.165.21                                        0

HP-2920-24G-PoEP-Bristol(config)#
0
 
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Expert Comment

by:Don Johnston
ID: 40488409
So here's what we know:

NTP appears to be properly configured.
The NTP server is valid since it's used on other devices.
You have a 12 minute interval on the updates.
You've sent out 4,980 requests but you haven't received any replies.

The only thing that I can think of is that the ASA is blocking the returning messages.

Just as a test, I would also try a different server.  I have run into situations where some servers limit the number of clients from a single IP address.
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Author Comment

by:CHI-LTD
ID: 40488486
can you recommend a reliable SNTP IP?
0
 
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Expert Comment

by:Don Johnston
ID: 40488493
I've used 64.90.182.55 & 216.128.67.248 in the past.
0
 
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Author Comment

by:CHI-LTD
ID: 40488579
uk servers?
0
 
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Author Comment

by:CHI-LTD
ID: 40488584
ah no...
0
 
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Author Comment

by:CHI-LTD
ID: 40488603
any idea what the command is to delete the old ips?
0
 
LVL 1

Author Comment

by:CHI-LTD
ID: 40488610
changed ips, we shall see what happens...
although sent packets increased and no received.
i reckon firewall blocking..
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Accepted Solution

by:
Don Johnston earned 2000 total points
ID: 40488620
Yeah... the ASA was my first guess.
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Author Closing Comment

by:CHI-LTD
ID: 40500054
asa...
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