S6520与思科3750对接NTP典型组网配置案例

S6520与思科3750对接NTP典型组网配置，其中S6520为时钟源，思科3750为客户端

S6520版本信息如下：

H3C Comware Software, Version 7.1.070, Release 1110P02

Copyright (c) 2004-2018 New H3C Technologies Co., Ltd. All rights reserved.

H3C S6520X-54QC-EI uptime is 31 weeks, 3 days, 21 hours, 12 minutes

Last reboot reason : Cold reboot

Boot image: flash:/s6520x-cmw710-boot-r1110p02.bin

Boot image version: 7.1.070, Release 1110P02

  Compiled Aug 14 2018 11:00:00

System image: flash:/s6520x-cmw710-system-r1110p02.bin

System image version: 7.1.070, Release 1110P02

  Compiled Aug 14 2018 11:00:00

思科3750信息如下：

Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(52)SE, RELEASE SOFTWARE (fc3)

Copyright (c) 1986-2009 by Cisco Systems, Inc.

Compiled Fri 25-Sep-09 08:32 by sasyamal

Image text-base: 0x01000000, data-base: 0x02E00000

ROM: Bootstrap program is C3750 boot loader

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)

JCW_C3750_A uptime is 1 year, 18 weeks, 1 day, 9 hours, 34 minutes

System returned to ROM by address error at PC 0x1765528, address 0x0

System restarted at 05:21:37 GX Thu Jan 24 2019

System image file is "flash:/c3750-ipservicesk9-mz.122-52.SE.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

cisco WS-C3750G-48TS (PowerPC405) processor (revision H0) with 131072K bytes of memory.

Processor board ID FOC1446Y0A6

Last reset from address error

7 Virtual Ethernet interfaces

52 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : F0:25:72:81:E7:80

Motherboard assembly number     : 73-10218-10

Power supply part number        : 341-0107-01

Motherboard serial number       : FOC14434ZZ4

Power supply serial number      : AZS143207C1

Model revision number           : H0

Motherboard revision number     : A0

Model number                    : WS-C3750G-48TS-E

System serial number            : FOC1446Y0A6

Top Assembly Part Number        : 800-27483-05

Top Assembly Revision Number    : D0

Version ID                      : V07

CLEI Code Number                : CMMAN00ARA

Hardware Board Revision Number  : 0x09

Switch Ports Model              SW Version            SW Image                

------ ----- -----              ----------            ----------              

*    1 52    WS-C3750G-48TS     12.2(52)SE            C3750-IPSERVICESK9-M    

Configuration register is 0xF

S6520 NTP时钟源配置信息如下：

clock protocol none

ntp-service enable

 ntp-service refclock-master 2

interface Vlan-interface100

 description YunWeiGuanLi

 ip address 10.190.8.1 255.255.255.192

 quit

思科3750 NTP配置如下：

ntp server 10.190.8.1 source Loopback0

S6520查看NTP显示信息：

dis ntp sessions

       source          reference       stra reach poll  now offset  delay disper

********************************************************************************

   [25]10.190.8.252    LOCL               1   255   64   51 -28825 0.9002 18.218

[12345]LOCAL(0)        LOCL               1   255   64   42 0.0000 0.0000 0.9155

Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.

 Total sessions: 2

dis ntp status

 Clock status: synchronized

 Clock stratum: 2

 System peer: LOCAL(0)

 Local mode: client

 Reference clock ID: 127.127.1.0

 Leap indicator: 00

 Clock jitter: 0.000000 s

 Stability: 0.000 pps

 Clock precision: 2^-21

 Root delay: 0.00000 ms

 Root dispersion: 10.98633 ms

 Reference time: e27ced67.56daf74f  Sat, May 30 2020 14:34:15.339

 System poll interval: 64 s

思科3750查看NTP显示信息：

sh ntp status

Clock is synchronized, stratum 3, reference is 10.190.8.1

nominal freq is 119.2092 Hz, actual freq is 119.2110 Hz, precision is 2**18

reference time is E27CEE35.8C7EDE85 (14:37:41.548 GX Sat May 30 2020)

clock offset is 0.5777 msec, root delay is 1.36 msec

root dispersion is 12.39 msec, peer dispersion is 0.70 msec

sh ntp associations

      address         ref clock     st  when  poll reach  delay  offset    disp

*~10.190.8.1       127.127.1.0       2   544  1024  377     1.4    0.58     0.7

 * master (synced), # master (unsynced), + selected, - candidate, ~ configured