ZyXEL Communications P-660 series

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P-660 Series Support Notes

Authen= N/A Edit Filter Sets= No

Idle Timeout(sec)= 0

• Time Service in P-660

There is no RTC (Real-Time Clock) chip so the P-660 should launch a mechanism to

get current time and date from external server in boot time. Time service is

implemented by the Daytime protocol(RFC-867), Time protocol(RFC-868), and

NTP protocol(RFC-1305). You have to assign an IP address of a time server and

then, the P-660 will get the date, time, and time-zone information from this server.

Menu 24.10 - System Maintenance - Time and Date Setting

Use Time Server when Bootup= Daytime (RFC-867)

Time Server IP Address= 202.132.154.1

Current Time: 00 : 11 : 38

New Time (hh:mm:ss): 00 : 11 : 36

Current Date: 2000 - 01 - 01

New Date (yyyy-mm-dd): 2000 - 01 - 01

Time Zone= GMT+0800

Daylight Saving= No

Start Date (mm-dd): 01 - 00

End Date (mm-dd): 01 - 00

Press ENTER to Confirm or ESC to Cancel:

13. Using IP Multicast

• What is IP Multicast ?

Traditionally, IP packets are transmitted in two ways - unicast or broadcast. Multicast

is a third way to deliver IP packets to a group of hosts. Host groups are identified by

class D IP addresses, i.e., those with "1110" as their higher-order bits. In dotted

decimal notation, host group addresses range from 224.0.0.0 to 239.255.255.255.

Among them, 224.0.0.1 is assigned to the permanent IP hosts group, and 224.0.0.2 is

assigned to the multicast routers group.

ZyXEL Communications P-660 series - Using IP Multicast