H3c-technologies H3C WX6000 Series Access Controllers Manual de usuario descargar pdf (Pagina 90)

6-22

# View the NTP session information of AC 1, which shows that an association has been set up between

AC 1 and AC 2.

[AC1-Vlan-interface3] display ntp-service sessions

source reference stra reach poll now offset delay disper

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

[1234] 3.0.1.31 127.127.1.0 2 255 64 26 -16.0 40.0 16.6

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

Total associations : 1

Configuring NTP Client/Server Mode with Authentication

Network requirements

z The local clock of Switch is to be configured as a reference source, with the stratum level of 2.

z AC works in the client mode and Switch is to be used as the NTP server of AC, with AC as the

client.

z NTP authentication is to be enabled on both Switch and AC.

Figure 6-11 Network diagram for configuration of NTP client/server mode with authentication

Vlan-int

1.0.1.11/24

Vlan-int

1.0.1.12/24

Switch AC

Configuration procedure

1) Configuration on Switch:

# Specify the local clock as the reference source, with the stratum level of 2.

<Switch> system-view

[Switch] ntp-service refclcok-master 2

2) Configuration on AC:

<AC> system-view

# Enable NTP authentication on AC.

[AC] ntp-service authentication enable

# Set an authentication key.

[AC] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey

# Specify the key as a trusted key.

[AC] ntp-service reliable authentication-keyid 42

# Specify Switch as the NTP server.

[AC] ntp-service unicast-server 1.0.1.11 authentication-keyid 42

Before AC can synchronize its clock to that of Switch, you need to enable NTP authentication for

Switch.

Perform the following configuration on Switch:

# Enable NTP authentication.

[Switch] ntp-service authentication enable

# Set an authentication key.

[Switch] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey

# Specify the key as a trusted key.

[Switch] ntp-service reliable authentication-keyid 42

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