General switch administration using the Command Line Interface
185
"Default rate-limit parameters" (page 185)
describes the parameters for
this command.
Default rate-limit parameters
Parameters
Description
port <portlist>
Specify the port numbers to reset rate-limiting to factory
default. Enter the port numbers to set rate-limiting to
default.
Note: If you omit this parameter, the system uses the
port number you specified in the
interface
command.
Using Simple Network Time Protocol
The Simple Network Time Protocol (SNTP) feature synchronizes the
Universal Coordinated Time (UTC) to an accuracy within 1 second. This
feature adheres to the IEEE RFC 2030 (MIB is the s5agent). With this
feature, the system can obtain the time from any RFC 2030-compliant
NTP/SNTP server.
Note: If problems occur when you use this feature, try various NTP
servers. Some NTP servers can be overloaded or currently inoperable.
The system retries connecting with the NTP server a maximum of three
times, with 5 minutes between each retry.
Use SNTP to provide a real-time timestamp for the software, shown as
Greenwich Mean Time (GMT).
If you run SNTP, the system synchronizes with the configured NTP
server at boot-up and at user-configurable periods thereafter (the default
synchronization interval is 24 hours). The first synchronization does not
occur until network connectivity is established.
SNTP supports primary and secondary NTP servers. The system tries the
secondary NTP server only if the primary NTP server is unresponsive.
To configure SNTP, see the following commands:
•
"Show SNTP command" (page 186)
•
"show sys-info command" (page 186)
•
"SNTP enable command" (page 186)
•
"No SNTP enable command" (page 186)
•
"SNTP server primary address command" (page 186)
•
"SNTP server secondary address command" (page 187)
•
"No SNTP server command" (page 187)
Nortel Ethernet Routing Switch 4500 Series
Overview — System Configuration
NN47205-500
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
.