The RUCKUS ICX device must be configured to compare the internal system clocks on an organization-defined frequency with two organization-defined authoritative time sources.

Synchronization of internal system clocks with an authoritative source provides uniformity of time stamps for systems with multiple system clocks and systems connected over a network.

Verify NTP is configured and synchronizing with two peers:

device#show ntp association address Domain name Reference Clock st when poll Reach delay offset disp *~ 216.239.35.8 None GOOG 1 56 64 377 30.444 2.0021 2.884 +~ 23.150.40.242 pool.ntp.org 204.9.54.119 2 61 64 377 44.339 -0.6625 1.220 * synced, # selected, + candidate, - outlayer, x falseticker, ~ configured, **More characters in domain name

Configure NTP clock synchronization.

Configure NTP: device#configure terminal device(config)# ntp device(config-ntp)#server 216.239.35.8 (example IP) device(config-ntp)# write memory

Configure NTP with authentication: device#configure terminal device(config)# ntp device(config-ntp)#server 216.239.35.8 (example IP) device(config-ntp)#authentication-key key-id 1234 sha1 testntpsession device(config-ntp)# write memory