Technical data

FastIron Ethernet Switch Administration Guide 31
53-1002637-02
Network Time Protocol Version 4 (NTPv4)
2
Brocade(config-ntp)# source-interface ethernet 1/3/1
Syntax: [no] source-interface ethernet port | loopback num | ve num
Specify the port parameter in the format stack-unit/slotnum/portnum.
The loopback num parameter specifies the loopback interface number.
The ve num parameter specifies the virtual port number.
Enable or disable the VLAN containment for NTP
To enable or disable the VLAN containment for NTP, use the access-control vlan command. To
remove the specified NTP VLAN configuration, use the no form of this command.
NOTE
The management interface is not part of any VLAN. When configuring the VLAN containment for NTP,
it will not use the management interface to send or receive the NTP packets.
Brocade(config-ntp)# access-control vlan 100
Syntax: [no] access-control vlan vlan-id
The vlan-id parameter specifies the VLAN ID number.
Configuring the NTP client
To configure the device in client mode and specify the NTP servers to synchronize the system clock,
use the server command. A maximum 8 NTP servers can be configured. To remove the NTP server
configuration, use the no form of this command.
By default, no servers are configured.
Brocade(config-ntp)#server 1.2.3.4 key 1234
Syntax: [no] server ipv4-address | ipv6-address [version num] [key key-id] [minpoll interval]
[maxpoll interval] [burst]
The ipv4-address or ipv6-address parameter is the IP address of the server providing the clock
synchronization.
The version num option defines the Network Time Protocol (NTP) version number. Valid values are
3 or 4. If the num option is not specified, the default is 4.
The key key-id option defines the authentication key. By default, no authentication key is
configured.
The minpoll interval option is the shortest polling interval. The range is from 4 through 17. Default is
6. The interval argument is power of 2 (4=16s, 5=32s, 6=64s, 7=128s, 8=256s, 9=512s, and so
on).
The maxpoll interval option is the longest polling interval. The range is 4 through 17. Default is 10.
The interval argument is calculated by the power of 2 (4=16s, 5=32s, 6=64s, 7=128s, 8=256s,
9=512s, and so on).
The burst option sends a burst of packets to the server at each polling interval.