Symmetricom TimeProvider 500, Руководство пользователя

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46 TimeProvider 500 2.0 User’s Guide 098-00172-000 Revision A – December, 2009
Chapter 2 Installation & Configuration
Configuration Setup
If there is connectivity, TimeProvider 500 will produce a response similar to the
following:
TP-500> ping if0 192.168.1.100
Pinging 192.168.1.11 [192.168.1.100]:
Reply from 192.168.1.100: time=5ms
Reply from 192.168.1.100: time=0ms
Reply from 192.168.1.100: time=0ms
Reply from 192.168.1.100: time=0ms
If there is lack of connectivity, TimeProvider 500 will produce a response
similar to the following response:
TP-500> ping if0 192.168.1.100
Pinging 192.168.1.11 [192.168.1.100]:
Request timed out
If the ping request times out, here are some considerations to help troubleshoot:

All of the items listed for troubleshooting connectivity with the TimeProvider 500
in
Confirm TimeProvider 500 Network Communication , on page 43 should be
considered.

The targeted grandmaster clock settings should be reviewed, if available. For
example, check the address settings it is actually using and anything related to
network configuration. For example, there could be firewalls in place preventing
connection.

If VLAN is being used in the TimeProvider 500, it is essential that the
grandmaster also be a member of the same VLAN (established by the
vlan_config
CLI command). If VLAN is enabled, and two grandmasters are
targeted by the TimeProvider 500, then both must be in the same VLAN with the
same VLAN-ID. See
Configure PTP Settings for more information.
Confirm PTP Flow
When connectivity between theTimeProvider 500 and the grandmaster clock(s) is
established, the actual PTP flow begins. The TimeProvider 500 starts PTP flow with
a request to the grandmaster clock(s) to send it the appropriate set of PTP packets
at the desired rate and for a desired duration. Once flow is established, the
TimeProvider 500 periodically sends a new flow to prevent a time out. The
automatic time out allows client clocks (such as a TimeProvider 500) to be removed
from the network without continuously consuming resources from the grandmaster
clock.
For a quick visual check for PTP flow, view the LED in the upper right-hand corner
of the RJ-45 connector labeled “1588” (see Link and Flow LED in
Figure 1-4 ). If
there is flow, the Link and Flow LED will blink at a high-rate (multiple blinks per
second). Next, type
show status
to view a list of current PTP-related settings, as
shown in Figure 2-9 .