H3c-technologies H3C WX6000 Series Access Controllers Uživatelský manuál stáhnout pdf (Strana 503)

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54-18

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

AC B and AC C.

[AC B] display ntp-service sessions

source reference stra reach poll now offset delay disper

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

[245] 3.0.1.31 127.127.1.0 2 15 64 24 10535.0 19.6 14.5

[1234] 3.0.1.33 LOCL 1 14 64 27 -77.0 16.0 14.8

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

Total associations : 2

Configuring NTP Broadcast Mode

Network requirements

z AC B’s local clock is to be used as a reference source, with the stratum level of 2.

z AC B works in the broadcast server mode and sends out broadcast messages from VLAN-interface

z AC A and AC C work in the broadcast client mode. AC A listens to broadcast messages through

VLAN-interface 3, while AC C listens to broadcast messages through VLAN-interface 2.

Network diagram

Figure 54-9 Network diagram for NTP broadcast mode configuration

Configuration procedure

1) Configuration on AC B:

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

<AC B> system-view

[AC B] ntp-service refclock-master 2

# Configure AC B to work in the broadcast server mode and send broadcast messages through

VLAN-interface 2.

[AC B] interface vlan-interface 2

[AC B-Vlan-interface2] ntp-service broadcast-server

2) Configuration on AC C:

# Configure AC C to work in the broadcast client mode and receive broadcast messages on

VLAN-interface 2.

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