R-APS Control MAC

The R-APS messages use the MAC address range allocated within ITU OUI for G.8032 R-APS communication, which is 01:19:A7:00:00:ring-id or 01:19:A7:00:00:01; whereas ring-id ranges from 1 to 239. ExtremeXOS supports both type of R-APS control MACs. You can use either “01:19:A7:00:00:01 (auto)” or “01:19:A7:00:00:ring-id (default)” as a R-APS control MAC using the following command: configure erps ring-name control-mac [auto | default].

Note that this command is only applicable on ring instances created with user-defined ring-id.

Control MAC by Default

If the ERPS ring is created with a user-defined ring-id, then the control-mac used by the ring will be “01:19:A7:00:00:ring-id (control-mac type auto)” by default.
If the ERPS ring is created without a user-defined ring-id, then the control-mac used by ring will be “01:19:A7:00:00:01 (control-mac type default)” by default.
If you are upgrading ExtremeXOS from an older version (without ring-id–based control MAC support) to newer version (with ring-id–based control MAC support), all configurations are retained and unique ring IDs are assigned to those ERPS ring instances by default. R-APS control MAC used by these rings IS “01:19:A7:00:00:01 (default)” by default.
Note that the control MAC configuration as auto is not applicable on such ring instances.

Note

Be advised that the ITU_T standard does not have the mechanism to recognize configuration mismatches across the nodes, especially with the ring-ID/control MAC configuration. Therefore, you must make sure that the all of the ring instances on all nodes within the same physical ring have the same ring ID and control MAC.