viii
IP Addressing with Multiple VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
IP Addressing in a Stacking Environment . . . . . . . . . . . . . . . . . . . . . . . 7-5
Menu: Configuring IP Address, Gateway, and Time-To-Live (TTL) . . 7-5
CLI: Configuring IP Address, Gateway, Time-To-Live (TTL), and
Timep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Web: Configuring IP Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
How IP Addressing Affects Switch Operation . . . . . . . . . . . . . . . . . . . . 7-9
Globally Assigned IP Network Addresses . . . . . . . . . . . . . . . . . . . . . . 7-14
Time Protocols
Chapter Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
TimeP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
SNTP Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Overview: Selecting a Time Synchronization Protocol or Turning Off
Time Protocol Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
General Steps for Running a Time Protocol on the Switch: . . . . . . . . 8-3
Disabling Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
SNTP: Viewing, Selecting, and Configuring . . . . . . . . . . . . . . . . . . . . . 8-4
Menu: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
CLI: Viewing and Configuring SNTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
TimeP: Viewing, Selecting, and Configuring . . . . . . . . . . . . . . . . . . . . 8-13
Menu: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . 8-14
CLI: Viewing and Configuring TimeP . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
SNTP Unicast Time Polling with Multiple SNTP Servers . . . . . . . . 8-20
Address Prioritization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Adding and Deleting SNTP Server Addresses . . . . . . . . . . . . . . . . . . . 8-21
Menu Interface Operation with Multiple SNTP Server Addresses Configured
8-23
SNTP Messages in the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Using Passwords and TACACS+ To Protect Against
Unauthorized Access
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
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