H3C Technologies H3C WX3000 Series Unified Switches User Manual
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Troubleshooting IGMP Snooping........................................................................................................44-19
45 Common Multicast Configuration........................................................................................................45-1
Common Multicast Configuration..........................................................................................................45-1
Configuring a Multicast MAC Address Entry .................................................................................45-1
Configuring Dropping Unknown Multicast Packets .......................................................................45-2
46 NTP Configuration .................................................................................................................................46-1
Introduction to NTP ...............................................................................................................................46-1
Applications of NTP .......................................................................................................................46-1
Implementation Principle of NTP...................................................................................................46-2
NTP Implementation Modes..........................................................................................................46-3
NTP Configuration Task List .................................................................................................................46-6
Configuring NTP Implementation Modes..............................................................................................46-6
Configuring NTP Server/Client Mode ............................................................................................46-6
Configuring the NTP Symmetric Peer Mode .................................................................................46-7
Configuring NTP Broadcast Mode.................................................................................................46-8
Configuring NTP Multicast Mode...................................................................................................46-9
Configuring Access Control Right .........................................................................................................46-9
Configuration Prerequisites .........................................................................................................46-10
Configuration Procedure..............................................................................................................46-10
Configuring NTP Authentication..........................................................................................................46-10
Configuration Prerequisites .........................................................................................................46-11
Configuration Procedure..............................................................................................................46-11
Configuring Optional NTP Parameters ...............................................................................................46-13
Configuring an Interface on the Local Device to Send NTP Messages ......................................46-13
Configuring the Number of Dynamic Sessions Allowed on the Local Device .............................46-13
Disabling an Interface from Receiving NTP messages...............................................................46-14
Displaying and Maintaining NTP Configuration ..................................................................................46-14
NTP Configuration Examples..............................................................................................................46-14
Configuring NTP Server/Client Mode ..........................................................................................46-14
Configuring NTP Symmetric Peer Mode .....................................................................................46-15
Configuring NTP Broadcast Mode...............................................................................................46-17
Configuring NTP Multicast Mode.................................................................................................46-18
Configuring NTP Server/Client Mode with Authentication...........................................................46-20
47 SSH Configuration.................................................................................................................................46-1
SSH Overview.......................................................................................................................................46-1
Introduction to SSH .......................................................................................................................46-1
Algorithm and Key .........................................................................................................................46-1
Asymmetric Key Algorithm ............................................................................................................46-2
SSH Operating Process ................................................................................................................46-2
Configuring the SSH Server..................................................................................................................46-4
SSH Server Configuration Tasks ..................................................................................................46-4
Configuring the Protocol Support for the User Interface ...............................................................46-5
Generating/Destroying a RSA or DSA Key Pair............................................................................46-5
Exporting the RSA or DSA Public Key ..........................................................................................46-6