Redundant Ioc Cards With Redundant (Bonded) Ethernet Ports; Possible Conflicts With Clock Ids And Ip Addresses - Symmetricom TimeProvider 5000 User Manual

Figure D-3.

Redundant IOC Cards With Redundant (Bonded) Ethernet Ports

Possible Conflicts With Clock IDs and IP Addresses

As previously described, when the chassis contains two IOCs, the standby IOC
takes on general configuration from the active IOC, including the Clock ID
associated with the active IOC. In the event that one IOC card is removed and
installed as a single IOC card in a different TP5000 chassis, a conflict can ensue
because both TP5000s will be using the same Clock IDs and IP addresses. (If the
IOC is placed in a TP5000 chassis that already has an Active IOC, the inserted IOC
will take on the Clock IDs and IP addresses of the Active IOC.)
This issue can be avoided by issuing the "set configuration default" command to the
TP5000 with the newly installed IOC card before putting the unit into service as a
Grandmaster. All IOC parameters will be reset to default values (see Appendix B of
the TP5000 User's Guide for descriptions of default values), but user logins and
communication attributes, such as IP addresses of the MGMT port on the IMC, will
be preserved. The Clock ID will be generated from the MAC addresses for the
ETH1 and ETH2 ports of the active IOC card. The IP addresses for ETH1 and ETH2
will need to be reconfigured, as well as the PTP parameters
Causes of Switchovers Between IOC Cards
A switchover is when the TP5000 switches the active card to the standby state,
while also switching the standby card to the active state. The active IOC card sends
a gratuitous ARP after switchover. Switchovers between IOC cards are
non-revertive.
There are two possible causes for switchovers between IOC cards on the TP5000:
emergency/health situations and planned switchovers.
098-00028-000 Revision F – May, 2012
Appendix D Redundant IOC Cards
Causes of Switchovers Between IOC Cards
TimeProvider 5000 User's Guide 485