[SwitchA-GigabitEthernet0/0/1] port hybrid untagged vlan 20
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface vlanif 20
[SwitchA-vlanif20] ip address 1.0.1.11 24
[SwitchA-vlanif20] quit
Step 2 Configure the routes between them are reachable.The configuration procedure is not mentioned.
Step 3 Configure the NTP broadcast server and enable NTP authentication.
# Configure the clock of Switch C as the NTP master clock with the stratum being 3.
<SwitchC> system-view
[SwitchC] ntp-service refclock-master 3
# Enable NTP authentication.
[SwitchC] ntp-service authentication enable
[SwitchC] ntp-service authentication-keyid 16 authentication-mode md5 Hello
[SwitchC] ntp-service reliable authentication-keyid 16
# Configure Switch C as an NTP broadcast server. Broadcast packets are encrypted by using the
authentication key ID 16 and then sent through VLANIF10.
[SwitchC] interface vlanif 10
[SwitchC-vlanif10] ntp-service broadcast-server authentication-keyid 16
[SwitchC-vlanif10] quit
Step 4 Configure Switch D, which resides on the same network segment with the server.
# Enable NTP authentication.
<SwitchD> system-view
[SwitchD] ntp-service authentication enable
[SwitchD] ntp-service authentication-keyid 16 authentication-mode md5 Hello
[SwitchD] ntp-service reliable authentication-keyid 16
# Configure Switch D as the NTP broadcast client and configure Switch D to listen to NTP
broadcast packets through VLANIF10.
[SwitchD]interface vlanif 10
[SwitchD-vlanif10] ntp-service broadcast-client
[SwitchD-vlanif10] quit
After the configurations, the clock of Switch D is synchronized with the clock of Switch C.
Step 5 Configure Switch A, which resides on different network segment from the server.
# Enable NTP authentication.
[SwitchA] ntp-service authentication enable
[SwitchA] ntp-service authentication-keyid 16 authentication-mode md5 Hello
[SwitchA] ntp-service reliable authentication-keyid 16
# Configure Switch A as the NTP broadcast client and configure Switch A to listen to NTP
broadcast packets through VLANIF20.
[SwitchA]interface vlanif 20
[SwitchA-vlanif20] ntp-service broadcast-client
[SwitchA-vlanif20] quit
Step 6 Verify the configuration.
After the configurations, the clock on Switch D can be synchronized to the clock on Switch C,
but the clock on Switch A cannot be synchronized
because Switch A and Switch C are on different network segments and Switch A cannot receive
the broadcast packets sent from Switch C.
Quidway S5700 Series Ethernet Switches
Configuration Guide - Network Management 4 NTP Configuration
Issue 01 (2011-10-26) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
238
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