H3C Technologies H3C S7500E Series Switches - Manual (Page 8)

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Displaying and Maintaining NQA ·······································································································2-27
NQA Configuration Examples ············································································································2-28
ICMP Echo Test Configuration Example ····················································································2-28
DHCP Test Configuration Example ····························································································2-29
DNS Test Configuration Example ······························································································2-30
FTP Test Configuration Example ·······························································································2-31
HTTP Test Configuration Example·····························································································2-32
UDP Jitter Test Configuration Example······················································································2-33
SNMP Test Configuration Example····························································································2-36
TCP Test Configuration Example ·······························································································2-37
UDP Echo Test Configuration Example ·····················································································2-38
Voice Test Configuration Example ·····························································································2-39
DLSw Test Configuration Example ····························································································2-42
NQA Collaboration Configuration Example ················································································2-43
3 NTP Configuration··································································································································3-1
NTP Overview······································································································································3-1
Applications of NTP ······················································································································3-1
Advantages of NTP ······················································································································3-2
How NTP Works ···························································································································3-2
NTP Message Format ··················································································································3-3
Operation Modes of NTP··············································································································3-5
Multiple Instances of NTP ············································································································3-7
NTP Configuration Task List ················································································································3-8
Configuring the Operation Modes of NTP····························································································3-8
Configuring NTP Client/Server Mode ···························································································3-9
Configuring the NTP Symmetric Peers Mode ············································································3-10
Configuring NTP Broadcast Mode······························································································3-11
Configuring NTP Multicast Mode································································································3-12
Configuring the Local Clock as a Reference Source ·········································································3-13
Configuring Optional Parameters of NTP ··························································································3-14
Specifying the Source Interface for NTP Messages···································································3-14
Disabling an Interface from Receiving NTP Messages ······························································3-15
Configuring the Maximum Number of Dynamic Sessions Allowed ············································3-15
Configuring Access-Control Rights ····································································································3-16
Configuration Prerequisites ········································································································3-16
Configuration Procedure ············································································································3-16
Configuring NTP Authentication ········································································································3-17
Configuration Prerequisites ········································································································3-17
Configuration Procedure ············································································································3-17
Displaying and Maintaining NTP········································································································3-19
NTP Configuration Examples ············································································································3-20
Configuring NTP Client/Server Mode ·························································································3-20
Configuring the NTP Symmetric Mode ·······················································································3-21
Configuring NTP Broadcast Mode······························································································3-22
Configuring NTP Multicast Mode································································································3-24