Brocade Mobility Access Point System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 837)

Brocade Mobility Access Point System Reference Guide 827
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NTP Association
Network Time
The interaction between the access point and an NTP server constitutes an association. NTP
associations can be either peer associations (the access point synchronizes to another system or
allows another system to synchronize to it), or a server associations (only the access point
synchronizes to the NTP resource, not the other way around).
To view the access point’s NTP association statistics:
1. Select the Statistics menu from the Web UI.
2. Select System from the navigation pane (on the left-hand side of the screen). Expand a RF
Domain and select one of its connected access points.
3. Select Network Time and expand the menu to reveal its sub menu items.
4. Select the NTP Association tab.
FIGURE 89 Access Point - NTP Association screen
The NTP Association screen displays the following:
Delay Time Displays the round-trip delay (in seconds) for broadcasts between the NTP server and the
access point.
Display Displays the time difference between the peer NTP server and the access point’s clock.
Offset Displays the calculated offset between the access point and the NTP server. The access point
adjusts its clock to match the server’s time value. The offset gravitates towards zero, but never
completely reduces its offset to zero.
Poll Displays the maximum interval between successive messages (in seconds) to the nearest
power of two.
Reach Displays the status of the last eight SNTP messages. If an SNTP packet is lost, the lost packet is
tracked over the next eight SNTP messages.
Reference IP Address Displays the address of the time source the access point is synchronized to.
Server IP Address Displays the numerical IP address of the SNTP resource (server) providing SNTP updates to the
access point.