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ntp-service ipv6 unicast-server, Usage guidelines, Examples, Related commands, Syntax

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vpn-instance vpn-instance-name: Specifies the MPLS L3VPN to which the symmetric-passive peer belongs, where vpn-instance-name is a case-sensitive string of 1 to 31 characters. If the symmetric-passive peer is on the public network, do not specify this option. authentication-keyid keyid: Specifies the key ID to be used for sending NTP messages to the peer, where keyid is in the range of 1 to 4294967295. If this option is not specified, the local device and the peer do not authenticate each other. priority: Specifies the peer specified by ip-address or peer-name as the first choice under the same condition. source interface-type interface-number: Specifies the source interface for IPv6 NTP messages. If the specified passive peer address is not a link local address, the source IPv6 address for IPv6 NTP messages sent by the local device is the IPv6 address of the specified source interface. If the specified passive peer address is a link local address, the IPv6 NTP messages are sent from the specified source interface. The interface-type interface-number argument represents the interface type and number. If you do not specify an interface, the device automatically selects the source IPv6 address of IPv6 NTP messages. For more information, see RFC 3484. Usage guidelines When you specify an IPv6 passive peer for the device, the device and its IPv6 passive peer can be synchronized to each other. If their clocks are in synchronized state, the clock with a high stratum level is synchronized to the clock with a lower stratum level. To synchronize the PE to a PE or CE in a VPN, provide the vpn-instance vpn-instance-name option in the command. If you include the vpn-instance vpn-instance-name option in the undo ntp-service ipv6 unicast-peer command, the command removes the symmetric-passive peer with the IPv6 address of ipv6-address in the specified VPN. If you do not include the vpn-instance vpn-instance-name option in this command, the command removes the symmetric-passive peer with the IPv6 address of ipv6-address in the public network. Examples # Specify the device with the IPv6 address of 2001::1 as the symmetric-passive peer of the device, and specify the source interface for IPv6 NTP messages as VLAN-interface 1. system-view [Sysname] ntp-service ipv6 unicast-peer 2001::1 source vlan-interface 1 Related commands • ntp-service authentication enable • ntp-service authentication-keyid • ntp-service reliable authentication-keyid ntp-service ipv6 unicast-server Use ntp-service ipv6 unicast-server to specify an IPv6 NTP server for the device. Use undo ntp-service ipv6 unicast-server to remove an IPv6 NTP server specified for the device. Syntax ntp-service ipv6 unicast-server { ipv6-address | server-name } [ vpn-instance vpn-instance-name ] [ authentication-keyid keyid | priority | source interface-type interface-number ] * undo ntp-service ipv6 unicast-server { ipv6-address | server-name } [ vpn-instance vpn-instance-name ] 37

Section	Page
Title Page	1
Contents	3
Ping, tracert, and system debugging commands	7
debugging	7
display debugging	8
ping	8
ping ipv6	11
tracert	13
tracert ipv6	15
NTP commands	17
display ntp-service ipv6 sessions	17
display ntp-service sessions	21
display ntp-service status	25
display ntp-service trace	27
ntp-service acl	28
ntp-service authentication enable	29
ntp-service authentication-keyid	30
ntp-service broadcast-client	31
ntp-service broadcast-server	32
ntp-service enable	33
ntp-service inbound disable	33
ntp-service ipv6 acl	34
ntp-service ipv6 inbound disable	35
ntp-service ipv6 multicast-client	35
ntp-service ipv6 multicast-server	36
ntp-service ipv6 source	37
ntp-service ipv6 unicast-peer	38
ntp-service ipv6 unicast-server	39
ntp-service max-dynamic-sessions	41
ntp-service multicast-client	41
ntp-service multicast-server	42
ntp-service refclock-master	43
ntp-service reliable authentication-keyid	44
ntp-service source	45
ntp-service unicast-peer	46
ntp-service unicast-server	47
SNTP commands	49
display sntp ipv6 sessions	49
display sntp sessions	49
sntp authentication enable	50
sntp authentication-keyid	51
sntp enable	52
sntp ipv6 unicast-server	52
sntp reliable authentication-keyid	53
sntp unicast-server	54
Information center commands	56
display info-center	56
display logbuffer	56
display logbuffer summary	58
display logfile summary	59
display security-logfile summary	60
enable log updown	60
info-center enable	61
info-center logbuffer	61
info-center logbuffer size	62
info-center logfile enable	63
info-center logfile frequency	63
info-center logfile overwrite-protection	64
info-center logfile size-quota	65
info-center logfile switch-directory	65
info-center logging suppress duplicates	66
info-center loghost	67
info-center loghost source	68
info-center security-logfile alarm-threshold	69
info-center security-logfile enable	70
info-center security-logfile frequency	70
info-center security-logfile size-quota	71
info-center security-logfile switch-directory	72
info-center source	72
info-center synchronous	74
info-center timestamp	75
info-center timestamp loghost	76
logfile save	76
reset logbuffer	77
security-logfile save	77
terminal debugging	78
terminal logging level	79
terminal monitor	79
SNMP commands	81
display snmp-agent community	81
display snmp-agent group	82
display snmp-agent local-engineid	83
display snmp-agent mib-view	84
display snmp-agent remote	85
display snmp-agent statistics	86
display snmp-agent sys-info	88
display snmp-agent trap queue	89
display snmp-agent trap-list	89
display snmp-agent usm-user	90
enable snmp trap updown	91
snmp-agent	92
snmp-agent calculate-password	93
snmp-agent community	94
snmp-agent group	96
snmp-agent local-engineid	98
snmp-agent log	99
snmp-agent mib-view	99
snmp-agent packet max-size	101
snmp-agent remote	101
snmp-agent source	102
snmp-agent sys-info contact	103
snmp-agent sys-info location	104
snmp-agent sys-info version	104
snmp-agent target-host	105
snmp-agent trap enable	107
snmp-agent trap if-mib link extended	110
snmp-agent trap life	110
snmp-agent trap queue-size	111
snmp-agent usm-user { v1 \| v2c }	112
snmp-agent usm-user v3	113
NQA commands	117
data-fill	117
data-size	117
description (any NQA operation type view)	118
destination ip	119
destination port	119
display nqa history	120
display nqa reaction counters	121
display nqa result	122
display nqa statistics	123
frequency	125
history-record enable	126
history-record keep-time	127
history-record number	127
next-hop	128
nqa	129
nqa agent enable	129
nqa schedule	130
probe count	131
probe timeout	132
reaction checked-element probe-duration	132
reaction checked-element probe-fail	134
reaction checked-element probe-fail (for trigger)	135
route-option bypass-route	136
source interface	136
source ip	137
source port	138
statistics hold-time	139
statistics interval	139
statistics max-group	140
tos	140
ttl	141
type	142
vpn-instance (ICMP echo operation view)	142
sFlow commands	144
display sflow	144
sflow agent	145
sflow collector	146
sflow counter interval	147
sflow counter collector	147
sflow flow collector	148
sflow flow max-header	148
sflow sampling-mode	149
sflow sampling-rate	150
sflow source	150
Process monitoring and maintenance commands	152
display kernel deadloop	152
display kernel deadloop configuration	155
display kernel exception	156
display kernel reboot	159
display kernel starvation	161
display kernel starvation configuration	164
display process	165
display process cpu	168
display process log	169
display process memory	170
display process memory heap	171
display process memory heap address	173
display process memory heap size	174
monitor kernel deadloop enable	175
monitor kernel deadloop exclude-thread	176
monitor kernel deadloop time	176
monitor kernel starvation enable	177
monitor kernel starvation exclude-thread	178
monitor kernel starvation time	179
monitor process	180
monitor thread	185
reset kernel deadloop	188
reset kernel exception	188
reset kernel reboot	189
reset kernel starvation	189
Port mirroring commands	191
display mirroring-group	191
mirroring-group	192
mirroring-group mirroring-port (interface view)	193
mirroring-group mirroring-port (system view)	194
mirroring-group monitor-egress	195
mirroring-group monitor-port (interface view)	196
mirroring-group monitor-port (system view)	197
mirroring-group reflector-port	198
mirroring-group remote-probe vlan	199
Traffic mirroring commands	201
mirror-to	201
Support and other resources	202
Contacting HP	202
Subscription service	202
Related information	202
Documents	202
Websites	202
Conventions	203
Command conventions	203
GUI conventions	203
Symbols	203
Network topology icons	204
Port numbering in examples	204

Match case Limit results 1 per page

vpn-instance

vpn-instance-name

: Specifies the MPLS L3VPN to which the symmetric-passive peer belongs,

where

vpn-instance-name

is a case-sensitive string of 1 to 31 characters. If the symmetric-passive peer is

on the public network, do not specify this option.

authentication-keyid

keyid

: Specifies the key ID to be used for sending NTP messages to the peer, where

keyid

is in the range of 1 to 4294967295. If this option is not specified, the local device and the peer do

not authenticate each other.

priority

: Specifies the peer specified by

ip-address

peer-name

as the first choice under the same

condition.

source

interface-type interface-number

: Specifies the source interface for IPv6 NTP messages. If the

specified passive peer address is not a link local address, the source IPv6 address for IPv6 NTP messages

sent by the local device is the IPv6 address of the specified source interface. If the specified passive peer

address is a link local address, the IPv6 NTP messages are sent from the specified source interface. The

interface-type interface-number

argument represents the interface type and number. If you do not specify

an interface, the device automatically selects the source IPv6 address of IPv6 NTP messages. For more

information, see

RFC 3484

Usage guidelines

When you specify an IPv6 passive peer for the device, the device and its IPv6 passive peer can be

synchronized to each other. If their clocks are in synchronized state, the clock with a high stratum level is

synchronized to the clock with a lower stratum level.

To synchronize the PE to a PE or CE in a VPN, provide the

vpn-instance

vpn-instance-name

option in the

command.

If you include the

vpn-instance

vpn-instance-name

option in the

undo ntp-service ipv6 unicast-peer

command, the command removes the symmetric-passive peer with the IPv6 address of

ipv6-address

the specified VPN. If you do not include the

vpn-instance

vpn-instance-name

option in this command, the

command removes the symmetric-passive peer with the IPv6 address of

ipv6-address

in the public

network.

Examples

# Specify the device with the IPv6 address of 2001::1 as the symmetric-passive peer of the device, and

specify the source interface for IPv6 NTP messages as VLAN-interface 1.

<Sysname> system-view

[Sysname] ntp-service ipv6 unicast-peer 2001::1 source vlan-interface 1

Related commands

•

ntp-service authentication enable

•

ntp-service authentication-keyid

•

ntp-service reliable authentication-keyid

ntp-service ipv6 unicast-server

Use

ntp-service

ipv6

unicast-server

to specify an IPv6 NTP server for the device.

Use

undo ntp-service

ipv6

unicast-server

to remove an IPv6 NTP server specified for the device.

Syntax

ntp-service ipv6 unicast-server

{

ipv6-address

server-name

} [

vpn-instance

vpn-instance-name

]

[

authentication-keyid

keyid

priority

source

interface-type interface-number

] *

undo ntp-service ipv6 unicast-server

{

ipv6-address

server-name

} [

vpn-instance

vpn-instance-name

]