ii
TCP test configuration example ··························································································································· 43
UDP echo test configuration example ················································································································· 44
Voice test configuration example ························································································································ 45
DLSw test configuration example ························································································································· 48
NQA collaboration configuration example········································································································ 49
Configuring NTP ························································································································································ 52
NTP overview ································································································································································· 52
NTP applications ··················································································································································· 52
How NTP works ····················································································································································· 52
NTP message format ············································································································································· 53
Operation modes of NTP ····································································································································· 55
NTP-supported MPLS L3VPN ································································································································ 57
NTP configuration task list ············································································································································· 57
Configuring the operation modes of NTP ··················································································································· 57
Configuring NTP client/server mode ·················································································································· 58
Configuring the NTP symmetric mode ················································································································ 59
Configuring NTP broadcast mode ······················································································································· 59
Configuring NTP multicast mode ························································································································· 60
Configuring the local clock as a reference source ····································································································· 61
Configuring optional parameters of NTP ···················································································································· 61
Specifying the source interface for NTP messages ···························································································· 61
Disabling an interface from receiving NTP messages ······················································································· 62
Configuring the maximum number of dynamic sessions allowed ···································································· 62
Configuring access-control rights ································································································································· 62
Configuration prerequisites ·································································································································· 63
Configuration procedure ······································································································································ 63
Configuring NTP authentication ··································································································································· 63
Configuring NTP authentication in client/server mode ····················································································· 64
Configuring NTP authentication in symmetric peers mode ··············································································· 65
Configuring NTP authentication in broadcast mode ························································································· 66
Configuring NTP authentication in multicast mode ··························································································· 67
Displaying and maintaining NTP ································································································································· 68
NTP configuration examples ········································································································································· 69
Configuring NTP client/server mode ·················································································································· 69
Configuring the NTP symmetric mode ················································································································ 70
Configuring NTP broadcast mode ······················································································································· 72
Configuring NTP multicast mode ························································································································· 73
Configuring NTP client/server mode with authentication ················································································· 76
Configuring NTP broadcast mode with authentication ····················································································· 77
Configuring MPLS VPN time synchronization in client/server mode ······························································ 79
Configuring MPLS VPN time synchronization in symmetric peers mode ························································ 81
Configuring Clock monitoring ··································································································································· 83
Clock monitoring module overview ······························································································································ 83
Reference source level ·········································································································································· 83
Working mode of the clock monitoring module ································································································ 84
Working mode of the port clock ·························································································································· 84
Clock monitoring module configuration task list ········································································································· 85
Configuring working mode of the clock monitoring module of the SRPU ································································ 85
Configuring reference source priority ·························································································································· 86
Configuring SSM for reference sources ······················································································································· 86
Setting the ways of deriving SSM level ··············································································································· 86
Setting the bit position for transmitting bits clock source information ······························································ 86
Configuring SSM levels for the reference sources ····························································································· 87
