Users Guide

Table Of Contents
Simple Network Management Protocol..................................................................................................................... 150
SNMP security models and levels.......................................................................................................................... 151
MIBs...............................................................................................................................................................................151
SNMPv3.......................................................................................................................................................................152
Configure SNMP........................................................................................................................................................153
SNMP commands...................................................................................................................................................... 157
Example: Configure SNMP...................................................................................................................................... 167
System clock.....................................................................................................................................................................167
Time zones and UTC offset reference................................................................................................................. 168
System Clock commands.........................................................................................................................................185
Network Time Protocol.................................................................................................................................................. 186
Enable NTP..................................................................................................................................................................187
Broadcasts...................................................................................................................................................................188
Source IP address......................................................................................................................................................188
Authentication............................................................................................................................................................ 189
Sample NTP configuration.......................................................................................................................................190
NTP commands.......................................................................................................................................................... 192
Precision Time Protocol................................................................................................................................................. 198
Supported platforms................................................................................................................................................. 201
PTP installation scale and limits............................................................................................................................. 201
Configuration notes...................................................................................................................................................201
Hybrid clocking.......................................................................................................................................................... 202
Configure Precision Time Protocol....................................................................................................................... 202
View PTP information.............................................................................................................................................. 205
Example: Configure boundary clock with L2 transport method.................................................................... 207
Example: Configure boundary clock with IPv4 multicast transport method.............................................. 208
Example: Configure boundary clock with IPv4 unicast transport method..................................................209
Example: Configure end-to-end transparent clock........................................................................................... 210
Example: Configure boundary clock with IPv4 unicast transport method and L3 VLAN..........................211
Example: Configure PTP in a multinode setup....................................................................................................212
PTP commands..........................................................................................................................................................220
Synchronous Ethernet (SyncE)...................................................................................................................................236
Supported platforms................................................................................................................................................ 236
Clock source selection ............................................................................................................................................236
Manage clock selection............................................................................................................................................237
Standby clock source states.................................................................................................................................. 238
Restrictions and limitations.....................................................................................................................................238
Sample configurations..............................................................................................................................................238
SyncE commands......................................................................................................................................................248
Dynamic Host Configuration Protocol....................................................................................................................... 258
Packet format and options..................................................................................................................................... 259
DHCP server............................................................................................................................................................... 261
Automatic address allocation.................................................................................................................................. 261
Hostname resolution.................................................................................................................................................262
Manual binding entries.............................................................................................................................................263
View DHCP Information...........................................................................................................................................264
DHCP relay agent..................................................................................................................................................... 265
Enable or disable DHCP Option-82.......................................................................................................................266
DHCP relay agent options.......................................................................................................................................267
DHCP snooping..........................................................................................................................................................282
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