Juniper ACX7024 - Page 12

Congure GNSS Receiver
The Furuno TB-1 GNSS receiver is designed to operate with mulple constellaons. When connected to an external
GNSS antenna, the receiver contains all the circuitry necessary to automacally acquire GNSS satellite signals, track
GNSS satellites, and acquire precise posion and ming soluons. It provides 1 pulse-per-second (PPS) precision ming
and stable 10-MHz frequency output.
To opmize the GNSS capability, establish a common me scale and coordinated system between all the systems. This
coordinated system simplies network synchronizaon, provides exibility and resiliency.
Table 1 describes the steps to congure GNSS receiver on ACX7024 router.
Table 1: GNSS Receiver Conguraon
Conguraon Step Command
Step 1: (Mandatory) Enable GNSS receiver and grandmaster clock
funconality.
Enable the GNSS receiver by using the gnss-receiver 0 interface
statement at the edit chassis synchronization hierarchy level. By
enabling the GNSS receiver, you establish communicaon
between the ACX7024 router and the GNSS receiver.
Congure the satellite constellaon by using the gnss-receiver 0
constellation statement at the edit chassis synchronization
hierarchy level. Various constellaons are available. Through this
conguraon, you can congure the GNSS receiver to explicitly
use a specic constellaon or combinaon of constellaons.
For more informaon, see clock-mode, prole-type, transport-
ieee-802.3, gnss-receiver, and ptp-mode.
1. Set clock mode.
[edit protocols ptp]
user@host# set clock-mode ordinary
2. Set G.8275.1 prole type.
[edit protocols ptp]
user@host# set profile-type g.8275.1
3. Set transport protocol as IEEE 802.3.
[edit protocols ptp master interface
interface name multicast-
mode]
user@host# set transport ieee-802.3
4. Set the GNSS receiver interface.
[edit chassis synchronization gnss-receiver number ]
user@host# set interface
5. Congure the GNSS receiver type as TB-1.
[edit chassis synchronization gnss-receiver number ]
user@host# set receiver-type tb-1
6. Set the GNSS receiver constellaon.
[edit chassis synchronization gnss-receiver number ]
user@host# set constellation
7.Set PTP mode for FPC and PIC.
[edit chassis fpc 0 pic 0]
user@host# set ptp-mode
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