Using the Simple Network Time Protocol
Summit24e3 Switch Installation and User Guide
67
until authentication takes place. After authentication has taken place and the permanent IP address is
obtained, the show command displays the port state as authenticated.
#
show netlogin info ports 9 vlan corp
Port 9: VLAN: corp
Port State: Authenticated
Temp IP: Unknown
DHCP: Not Enabled
User: auto MAC: 00:10:A4:A9:11:3B
Disabling Network Login
Network login must be disabled on a port before you can delete a VLAN that contains that port. To
disable network login, use the following command:
disable netlogin ports <portlist> vlan <name>
Using the Simple Network Time Protocol
ExtremeWare supports the client portion of the Simple Network Time Protocol (SNTP) Version 3 based
on RFC1769. SNTP can be used by the switch to update and synchronize its internal clock from a
Network Time Protocol (NTP) server. When enabled, the switch sends out a periodic query to the
indicated NTP server, or the switch listens to broadcast NTP updates. In addition, the switch supports
the configured setting for Greenwich Mean time (GMT) offset and the use of Daylight Savings Time.
These features have been tested for year 2000 compliance.
Configuring and Using SNTP
To use SNTP, follow these steps:
1
Identify the host(s) that are configured as NTP server(s). Additionally, identify the preferred method
for obtaining NTP updates. The options are for the NTP server to send out broadcasts, or for
switches using NTP to query the NTP server(s) directly. A combination of both methods is possible.
You must identify the method that should be used for the switch being configured.
2
Configure the Greenwich Mean Time (GMT) offset and Daylight Savings Time preference. The
command syntax to configure GMT offset and usage of Daylight Savings is as follows:
config timezone <GMT_offset> {autodst | noautodst}
The GMT_OFFSET is in +/- minutes from the GMT time. Automatic Daylight Savings Time (DST)
changes can be enabled or disabled. The default setting is enabled.
3
Enable the SNTP client using the following command:
enable sntp-client
Once enabled, the switch sends out a periodic query to the NTP servers defined later (if configured)
or listens to broadcast NTP updates from the network. The network time information is
automatically saved into the on-board real-time clock.
4
If you would like this switch to use a directed query to the NTP server, configure the switch to use
the NTP server(s). If the switch listens to NTP broadcasts, skip this step. To configure the switch to
use a directed query, use the following command:
config sntp-client [primary | secondary] server [<ip_address> | <hostname>]
Содержание Summit Summit24
Страница 12: ...12 Contents Summit24e3 Switch Installation and User Guide Index Index of Commands ...
Страница 14: ...14 Figures Summit24e3 Switch Installation and User Guide ...
Страница 24: ...24 Summit24e3 Switch Installation and User Guide Summit24e3 Switch Overview ...
Страница 32: ...32 Summit24e3 Switch Installation and User Guide Switch Installation ...
Страница 78: ...78 Summit24e3 Switch Installation and User Guide Configuring Ports on a Switch ...
Страница 118: ...118 Summit24e3 Switch Installation and User Guide Network Address Translation NAT ...
Страница 132: ...132 Summit24e3 Switch Installation and User Guide Ethernet Automatic Protection Switching ...
Страница 146: ...146 Summit24e3 Switch Installation and User Guide Quality of Service QoS ...
Страница 158: ...158 Summit24e3 Switch Installation and User Guide Status Monitoring and Statistics ...
Страница 204: ...204 Summit24e3 Switch Installation and User Guide Interior Gateway Routing Protocols ...
Страница 212: ...212 Summit24e3 Switch Installation and User Guide Safety Information ...
Страница 216: ...216 Summit24e3 Switch Installation and User Guide Supported Standards ...
Страница 238: ...238 Index Summit24e3 Switch Installation and User Guide ...
Страница 244: ...244 Index of Commands Summit24e3 Switch Installation and User Guide ...