Symmetricom TimeProvider 5000 User Manual page 253

Multicast-Hybrid
Multicast-hybrid sends sync and announce messages using multicast, but sends
delay request and delay response messages using unicast. This minimizes the
amount of network traffic.
The TP5000 will support unicast negotiation for the delay requests. If the client limit
is reached, then the unicast negotiation request will be denied.
Note: The TP5000 requires a current license key to unlock the
multicast-hybrid addressing mode feature. Use the
command to display the current license.
The TP5000 will also support lease-less clients. These clients will operate in
multicast-hybrid mode, but will not request a lease via unicast negotiation. To
support this, the TP5000 will respond to all delay requests, regardless of whether
there is a lease for that client. The "set ptp multicast" command is used to provision
parameters specific to Multicast-Hybrid addressing mode. See
hierarchy of the "set ptp multicast" commands and
ranges.
The TP5000 will automatically learn lease-less clients. When the combined total of
clients (unicast-negotiated and lease-less clients) reaches 500, the TP5000 will not
grant new leases to unicast negotiation requests but it will respond to all new
lease-less clients.
Only one VLAN will be supported in multicast-hybrid mode. See
on page 247 for details.
Use the following procedure to configure Port 2 of IOC1 for multicast-hybrid
addressing mode:
1. Login at the Admin or Config-user level.
2. Type
set ptp addr-mode ioc1-2 multicast-hybrid
098-00028-003 Revision A – June, 2011
Chapter 4 Provisioning
Provisioning PTP
show license
Figure 4-11
Table 4-4 for defaults and
Provisioning
and press Enter.
TimeProvider 5000 User's Guide 253
for the
VLAN,