342 TimeProvider 5000 User’s Guide 098-00028-000 Revision F – May, 2012
Chapter 4 Provisioning
Provisioning Expansion Shelf PTP/SyncE Outputs
The “set ptp” command is used to provision PTP parameters for the TP E10
PTP/SyncE expansion shelf. See Figure 4-31 and Figure 4-32 for the hierarchy of
the “set ptp” commands that apply to the TP E10 PTP/SyncE expansion shelf.
SeeTable 4-10 for descriptions of the Common parameters and Table B-30 for
defaults and ranges.
In multicast mode, there are no client leases or client limits. All delay requests will
be responded to. There is no limit applied to the number of delay responses
supported, other than the maximum capacity of the Ethernet link and the packet
engine.
In multicast mode, the TP5000 creates a client list by examining the received PTP
delay request messages. In order for a client to be reliably added to the client list
and not removed, the TP5000 needs to receive several hundred delay request
messages during the client timeout period. If delay requests are sent at a slow rate,
then the client-timeout value must be increased. Since one-way PTP operation
does not use delay request and delay response messages, the client list will not be
populated in this mode.
Only one VLAN is supported in multicast mode. See Provisioning VLAN, on page
287 for details.
PTP Parameters for Expansion Shelf
Use the following procedure to provision expansion shelf 0 for one-step clock mode,
PTP timescale, alternate-master disabled, Priority 1 set to 2, Priority 2 set to 5,
dither enabled, and the domain set to a value of 225:
1. Login at the Admin or Config-user level.
2. Type
set ptp timescale exp0 ptp and press Enter
3. Type
set ptp two-step exp0 disable and press Enter.
4. Type
set ptp alternative-master exp0 disable and press Enter.
5. Type
set ptp priority-1 exp0 2 and press Enter.
6. Type
set ptp priority-2 exp0 5 and press Enter.
Note: The TP5000 requires a current license key to unlock the
multicast addressing mode feature. Use the
show license current
command to display the current license.
Note: : If the Alternate Master mode is set to Enable, the alternate
master flag will be set in the PTP messages. If the alternate master
flag is set, the TP5000 will not run the Best Master Clock (BMC)
algorithm and will stay in master mode.
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