H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur Page 29
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{ On the active peer, if NTP authentication is enabled and a key is associated with the passive
peer, but the key is not a trusted key, no matter whether NTP authentication is enabled or not on
the passive peer, the active peer does not synchronize to the passive peer.
• When the active peer has a smaller stratum level than the passive peer:
On the active peer, if NTP authentication is not enabled, no key is specified to associate with the
passive peer, or the key is not a trusted key, the active peer can synchronize to the passive peer
as long as NTP authentication is disabled on the passive peer.
Configuring NTP authentication for an active peer
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enable NTP authentication.
ntp-service authentication enable
By default, NTP authentication is
disabled.
3. Configure an NTP
authentication key.
ntp-service authentication-keyid
keyid authentication-mode md5
[ cipher | simple ] value
By default, no NTP authentication
key is configured.
Configure the same authentication
key on the active symmetric peer
and passive symmetric peer.
4. Configure the key as a trusted
key.
ntp-service reliable
authentication-keyid keyid
By default, the authentication key is
not configured as a trusted key.
5. Associate the specified key
with the passive peer.
ntp-service unicast-peer
{ ip-address | peer-name }
authentication-keyid keyid
You can associate a non-existing
key with a passive peer. To make
NTP authentication effective, you
must specify the key as an
authentication key and specify it as
a trusted key after associating the
key with the passive peer.
Configuring NTP authentication for a passive peer
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enable NTP authentication.
ntp-service authentication enable
By default, NTP authentication is
disabled.
3. Configure an NTP
authentication key.
ntp-service authentication-keyid
keyid authentication-mode md5
[ cipher | simple ] value
By default, no NTP authentication
key is configured.
Configure the same authentication
key on the active symmetric peer
and passive symmetric peer.
4. Configure the key as a trusted
key.
ntp-service reliable
authentication-keyid keyid
By default, the authentication key is
not configured as a trusted key.
Configuring NTP authentication in broadcast mode
Follow these instructions to configure NTP authentication in broadcast mode:
- H3C WX5540E Access Controller 1
- Switching Engine 1
- Preface 3
- Symbols 4
- Network topology icons 4
- Port numbering in examples 4
- Obtaining documentation 5
- Technical support 5
- Documentation feedback 5
- Contents 6
- Ping example 9
- Test procedure 10
- Tracert 11
- System debugging 12
- Debugging a feature module 13
- Ping and tracert example 14
- Configuring NTP 16
- NTP message format 17
- Operation modes 19
- Symmetric peers mode 20
- Broadcast mode 20
- NTP configuration task list 21
- Configuration guidelines 25
- Configuration prerequisites 27
- NTP configuration examples 32
- Root delay: 15.00 ms 34
- delay disper 38
- Root delay: 40.00 ms 38
- Root delay: 31.00 ms 42
- Root delay: 0.00 ms 42
- Overview 44
- System information formats 47
- # ps -ae 61
- # kill -9 147 61
- # syslogd -r & 61
- Configuring SNMP 62
- SNMP configuration task list 63
- Slot IDInterface Type 67
- Offset Chassis ID 67
- Configuring SNMP logging 68
- Configuring SNMP traps 68
- Enabling SNMP traps 69
- SNMP configuration examples 71
- SNMPv3 configuration example 72
- Configuring MIB style 76
- Configuring RMON 77
- History group 78
- Event group 78
- Alarm group 78
- Private alarm group 79
- Configuring port mirroring 87
- Local port mirroring 88
- Remote port mirroring 88
- Verifying the configuration 100
- Network requirements 100
- Configuration procedure 101
- A C D E H I N O P S T 104
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