EPSILON CLOCK MODEL EC20S Spectracom
23 User’s Manual
8.2 NETWORK SERVICES
The EC20S incorporates the following network services:
8.2.1 DHCP CLIENT
The EC20S incorporates a DHCP client using the port numbers 67 and 68 to get (if so configured) from a
remote DHCP server a dynamic IP address assigned to its Ethernet port.
8.2.2 HTTP SERVER
The EC20S can be monitored via a web interface using the HTTP protocol. The EC20S incorporates a
HTTP server accessible through the port number 80. For details about the web interface see 11.
8.2.3 SNMP SERVER
The EC20S can be monitored via a MIB browser using the SNMP protocol. The EC20S incorporates a
SNMP server accessible through the port numbers 161 (for the get/set methods) and 162 (for the trap
events). For details about the SNMP interface see 14.
8.2.4 NTP SERVER
The EC20S incorporates a basic NTP server accessible through the port number 123.
The EC20S can respond to NTP requests using the NTP protocol.
STRATUM
The stratum status is set according to the SFN status (which corresponds to the reliability / accuracy of
the time transferred via NTP ; cf. 10.2):
- Stratum = 15 : when SFN status is ‘Off’.
- Stratum = 1 : when SFN status is ‘On’.
LEAP SECOND INDICATOR
The leap indicator is set according to the SFN status (which corresponds to the reliability / accuracy of
the time transferred via NTP ; cf. 10.2) and the leap second information:
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