Hirschmann RS20 User Manual

Synchronizing the System Time in the
Network
110
7.3 Precision Time Protocol
Basic Configuration
Release 6.0 07/2010
Independently of the physical communication paths, the PTP provides logical
communication paths which you define by setting up PTP subdomains.
Subdomains are used to form groups of clocks that are time-independent
from the rest of the domain. Typically, the clocks in a group use the same
communication paths as other clocks.
Figure 30: PTP Subdomains
7.3.2 Preparing the PTP Configuration
After the function is activated, the PTP takes over the configuration
automatically. The delivery settings of the device are sufficient for most
applications.
 To get an overview of the time distribution, draw a network plan with all
the devices participating in PTP.
GPS
Reference
(Grandmaster Clock)
Boundary
Clock
Ordinary Clock
Switch
PTP Subdomain 2
PTP Subdomain 1
PLC

Hirschmann RS20 Specifications

General

Mounting	DIN Rail
Operating Temperature	-40°C to +70°C
Protection Class	IP30
Switching Technology	Store-and-Forward
Product Type	Industrial Ethernet Switch
Port Details	10/100 Mbps Ethernet ports
Switching Capacity	3.2 Gbps
MAC Address Table	8k
Management	Web, SNMP
Redundancy	MRP
Ports	8 or 16