Technical data
32 FastIron Ethernet Switch Administration Guide
53-1002637-02
Network Time Protocol Version 4 (NTPv4)
2
Configuring the master
To configure the FastIron device as a Network Time Protocol (NTP) master clock to which peers
synchronize themselves when an external NTP source is not available, use the master command.
The master clock is disabled by default. To disable the master clock function, use the no form of
this command.
NOTE
This command is not effective, if the NTP is enabled in client-only mode.
Brocade(config-ntp)# master stratum 5
Syntax: [no] master [stratum number]
The number variable is a number from 2 to 15. It indicates the NTP stratum number that the
system will claim.
Configuring the NTP peer
To configure the software clock to synchronize a peer or to be synchronized by a peer, use the peer
command. A maximum of 8 NTP peers can be configured. To disable this capability, use the no
form of this command.
This peer command is not effective if the NTP is enabled in client-only mode.
NOTE
If the peer is a member of symmetric passive association, then configuring the peer command will
fail.
Brocade(config-ntp)# peer 1.2.3.4 key 1234
Syntax: [no] peer 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 peer providing the clock
synchronization.
The version num option defines the Network Time Protocol (NTP) version number. Valid values are
3 and 4. If this option is not specified, then 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 peer at each polling interval.