Installation and User Manual
EtherHaul
1200™
Page 110
EH-INST-02, Issue 4.0
Remote EtherHaul 1200
Default>show ref-clock
ref-clock host prio : 255
ref-clock host status : backup-1
ref-clock host ql-actual : 11
ref-clock host ql-config : 11
ref-clock host ql-mode : disable
ref-clock host ssm-cvid : none
ref-clock eth0 prio : 100
ref-clock eth0 status : active
ref-clock eth0 ql-actual : 2
ref-clock eth0 ql-config : 14
ref-clock eth0 ql-mode : enable
ref-clock eth0 ssm-cvid : none
Figure
7-18
illustrates a SyncE scenario in which there is a holdover situation due to
radio failure:
The local EtherHaul 1200 receives timing information on Eth 1 from PRC
(ql 2), and distributes it to all interfaces.
There is no input on the remote EtherHaul 1200 because the radio link is
down.
The remote EtherHaul 1200 switches to holdover mode, maintaining the PRC
it received previously and distributing it with its own ql (ql 11).
Figure
7-18 Typical SyncE Scenario
– Holdover Due to Radio Failure
