draft-ietf-tictoc-ptp-enterprise-profile-04.txt   draft-ietf-tictoc-ptp-enterprise-profile-05.txt 
TICTOC Working Group Doug Arnold TICTOC Working Group Doug Arnold
Internet Draft Meinberg-USA Internet Draft Meinberg-USA
Intended status: Standards Track Heiko Gerstung Intended status: Standards Track Heiko Gerstung
Meinberg Meinberg
Expires: April 23, 2015 Oct 23, 2014 Expires: August 4, 2015 Feb 4, 2015
Enterprise Profile for the Precision Time Protocol Enterprise Profile for the Precision Time Protocol
With Mixed Multicast and Unicast Messages With Mixed Multicast and Unicast Messages
draft-ietf-tictoc-ptp-enterprise-profile-04.txt draft-ietf-tictoc-ptp-enterprise-profile-05.txt
Status of this Memo Status of this Memo
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documents at any time. It is inappropriate to use Internet-Drafts documents at any time. It is inappropriate to use Internet-Drafts
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This Internet-Draft will expire on April 23, 2015. This Internet-Draft will expire on Agust 4, 2015.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2015 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with carefully, as they describe your rights and restrictions with
respect to this document. Code Components extracted from this respect to this document. Code Components extracted from this
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Section 4.e of the Trust Legal Provisions and are provided without Section 4.e of the Trust Legal Provisions and are provided without
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all other masters. Unicast Discovery and Unicast Message all other masters. Unicast Discovery and Unicast Message
Negotiation options MUST NOT be utilized. Negotiation options MUST NOT be utilized.
8. Requirements for Master Clocks 8. Requirements for Master Clocks
Master clocks SHALL obey the standard Best Master Clock Algorithm Master clocks SHALL obey the standard Best Master Clock Algorithm
from [IEEE1588]. PTP systems using this profile MAY support from [IEEE1588]. PTP systems using this profile MAY support
multiple simultaneous Grandmasters as long as each active multiple simultaneous Grandmasters as long as each active
Grandmaster is operating in a different PTP domain. Grandmaster is operating in a different PTP domain.
Preferred Master Clocks SHOULD attempt to find a domain in which
they are the best master. Implementations SHOULD include a
configured list of PTP domain numbers. If the clock is not the
best master in the domain it is operating it tries another domain
in its list. Clocks which are not the best master in any of the
configured domains continue to monitor all the configured domains,
so that it can take over if the current best master disappears.
A port of a clock SHALL NOT be in the master state unless the A port of a clock SHALL NOT be in the master state unless the
clock has a current value for the number of UTC leap clock has a current value for the number of UTC leap
seconds. A clock with a port in the master state SHOULD indicate seconds. A clock with a port in the master state SHOULD indicate
the maximum adjustment to its internal clock within one sync the maximum adjustment to its internal clock within one sync
interval. The maximum phase adjustment is indicated in the interval. The maximum phase adjustment is indicated in the
Enterprise Profile announce TLV field for Maximum Phase Adjustment. Enterprise Profile announce TLV field for Maximum Phase Adjustment.
The Announce Messages SHALL include a TLV which indicates that the The Announce Messages SHALL include a TLV which indicates that the
clock is operating in the Enterprise Profile. The TLV shall have clock is operating in the Enterprise Profile. The TLV shall have
the following structure: the following structure:
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