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292 CHAPTER 11: SYSTEM MANAGEMENT
3 Enable multicast client mode.
[SW77504-Vlan-Interface2]ntp-service multicast-client
Configure Ethernet Switch SW77501:
1 Enter system view.
<SW77501>system-view
2 Enter Vlan-interface2 view.
[SW77501]interface vlan-interface 2
3 Enable multicast client mode.
[SW77501-Vlan-Interface2]ntp-service multicast-client
The previous examples configure SW77504 and SW77501 to receive multicast
messages from Vlan-interface2, SW77503 multicast messages from
Vlan-interface2. Since SW77501 and SW77503 are not located on the same
segments, SW77501 cannot receive the multicast packets from SW77503, while
SW77504 is synchronized by SW77503 after receiving the multicast packet.
Example: Configuring Authentication-Enabled NTP Server Mode
SW77501 sets the local clock as the NTP master clock at stratum 2. SW77502 sets
SW77501 as its time server in server mode and itself in client mode and enables
authentication. See
Figure 66.
Configure Ethernet Switch SW77501:
1 Enter system view.
<SW77501>system-view
2 Set the local clock as the master NTP clock at stratum 2.
[SW77501]ntp-service refclcok-master 2
Configure Ethernet Switch SW77502:
1 Enter system view.
<SW77502>system-view
2 Set SW77501 as time server.
[SW77502]ntp-service unicast-server 1.0.1.11
3 Enable authentication.
[SW77502]ntp-service authentication enable
4 Set the key.
[SW77502]ntp-service authentication-keyid 42 authentication-mode md5
aNiceKey
5 Set the key as reliable.
[SW77502]ntp-service reliable authentication-keyid 42
The previous examples synchronized SW77502 by SW77501. Since SW77501 has
not been enabled authentication, it cannot synchronize SW77502.