Global Positioning System (GPS) on Routing Platforms

GPS is a navigation aid system that uses signals from satellites to calculate the actual position of a GPS-capable receiver. Some Juniper routers support GPS.

Global Positioning System (GPS) is a navigation aid system that uses signals from satellites to calculate the actual position of a GPS-capable receiver. These signals are not only used for determining the position of the receiver on Earth but also as a very accurate time base. There are GPS receivers with 10-MHz clock frequency output synchronized to a GPS satellite.

Platform-Specific GPS Behavior

Use Feature Explorer to confirm platform and release support for specific features.

Use the following table to review platform-specific behaviors for your platform:

Table 1: Platform-Specific Behavior
Platform	Difference
ACX Series	The GPS supported ACX Series routers have a SubMiniature version B (SMB) connector that can take 10-MHz sine-wave input from a GPS receiver. To configure this 10-MHz clock from a GPS receiver as a candidate clock source for chassis synchronization, include the `gps` statement and options at the [edit chassis synchronization source] hierarchy level. ACX500 routers do not require an external GPS receiver because the GPS receiver is integrated into the system.