|Clause title:||PTP Instance options|
Rationale for revision
Clause 5 and the PICS are inconsistent with respect to whether the support of the AnnounceIntervalSetting state machine and SyncIntervalSetting state machine are required or optional. Clause 5 indicates that these are optional [5.4.2 b) 3) and 5.4.2 h)], while the PICS indicates that these are mandatory (A.11, MIMSTR-1 and A.13, MDFDPP-5). In addition, the PICS entry A.11, MDFDPP-6 indicates that support of the LinkDelaySyncIntervalSetting state machine is mandatory, while there is no mention at all of this state machine in Clause 5. In fact, based on the resolution of Comment #92 against 802.1AS-Rev/D7.0, these should all be optional.
In A.11, MIMSTR-1, change ‘M’ to ‘O’ under status, and add ‘No ’ under support. In A.13, MDFDPP5, change ‘M’ to ‘O’ under status, and add ‘No ’ under support. In A.13, MDFDPP6, change ‘M’ to ‘O’ under status, and add ‘No ’ under support. In 5.5 add a new item (i) (this is in the section under the text ‘An implementation of a PTP Instance with IEEE 802.3 MAC services to physical ports may:’): “Support the LinkDelayIntervalSetting state machine.
Impact on existing networks
There is no impact on existing networks. However, users who need these features will need to check that equipment they are considering obtaining supports the features, as they are now optional.
|Name:||Geoffrey M. Garner||Email:||email@example.com|
|Affiliation:||Huawei Technologies Co. Ltd|