draft-ietf-bfd-base-07.txt   draft-ietf-bfd-base-08.txt 
Network Working Group D. Katz Network Working Group D. Katz
Internet Draft Juniper Networks Internet Draft Juniper Networks
D. Ward D. Ward
Cisco Systems Cisco Systems
Expires: July, 2008 January, 2008 Expires: September, 2008 March, 2008
Bidirectional Forwarding Detection Bidirectional Forwarding Detection
draft-ietf-bfd-base-07.txt draft-ietf-bfd-base-08.txt
Status of this Memo Status of this Memo
By submitting this Internet-Draft, each author represents that any By submitting this Internet-Draft, each author represents that any
applicable patent or other IPR claims of which he or she is aware applicable patent or other IPR claims of which he or she is aware
have been or will be disclosed, and any of which he or she becomes have been or will be disclosed, and any of which he or she becomes
aware will be disclosed, in accordance with Section 6 of BCP 79. aware will be disclosed, in accordance with Section 6 of BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Version (Vers) Version (Vers)
The version number of the protocol. This document defines The version number of the protocol. This document defines
protocol version 1. protocol version 1.
Diagnostic (Diag) Diagnostic (Diag)
A diagnostic code specifying the local system's reason for the A diagnostic code specifying the local system's reason for the
last session state change to states Down or AdminDown. Values last change in session state. Values are:
are:
0 -- No Diagnostic 0 -- No Diagnostic
1 -- Control Detection Time Expired 1 -- Control Detection Time Expired
2 -- Echo Function Failed 2 -- Echo Function Failed
3 -- Neighbor Signaled Session Down 3 -- Neighbor Signaled Session Down
4 -- Forwarding Plane Reset 4 -- Forwarding Plane Reset
5 -- Path Down 5 -- Path Down
6 -- Concatenated Path Down 6 -- Concatenated Path Down
7 -- Administratively Down 7 -- Administratively Down
8 -- Reverse Concatenated Path Down 8 -- Reverse Concatenated Path Down
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The remote discriminator for this BFD session. This is the The remote discriminator for this BFD session. This is the
discriminator chosen by the remote system, and is totally discriminator chosen by the remote system, and is totally
opaque to the local system. This MUST be initialized to zero. opaque to the local system. This MUST be initialized to zero.
If a period of a Detection Time passes without the receipt of a If a period of a Detection Time passes without the receipt of a
valid, authenticated BFD packet from the remote system, this valid, authenticated BFD packet from the remote system, this
variable MUST be set to zero. variable MUST be set to zero.
bfd.LocalDiag bfd.LocalDiag
The diagnostic code specifying the reason for the most recent The diagnostic code specifying the reason for the most recent
local session state change to states Down or AdminDown. This change in the local session state. This MUST be initialized to
MUST be initialized to zero (No Diagnostic.) zero (No Diagnostic.)
bfd.DesiredMinTxInterval bfd.DesiredMinTxInterval
The minimum interval, in microseconds, between transmitted BFD The minimum interval, in microseconds, between transmitted BFD
Control packets that this system would like to use at the Control packets that this system would like to use at the
current time. The actual interval is negotiated between the current time. The actual interval is negotiated between the
two systems. This MUST be initialized to a value of at least two systems. This MUST be initialized to a value of at least
one second (1,000,000 microseconds) according to the rules one second (1,000,000 microseconds) according to the rules
described in section 6.8.3. The setting of this variable is described in section 6.8.3. The setting of this variable is
otherwise outside the scope of this specification. otherwise outside the scope of this specification.
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Dave Ward Dave Ward
Cisco Systems Cisco Systems
170 W. Tasman Dr. 170 W. Tasman Dr.
San Jose, CA 95134 USA San Jose, CA 95134 USA
Phone: +1-408-526-4000 Phone: +1-408-526-4000
Email: dward@cisco.com Email: dward@cisco.com
Changes from the Previous Draft Changes from the Previous Draft
A correction was made to the description of Demand mode in section All changes are purely editorial in nature.
6.6. Another correction was made to the interaction between timing
changes and the transmission of a Poll Sequence in section 6.8.3.
The requirement to clear bfd.RemoteDiscr when the remote system falls
silent was added to section 6.8.1. The continuing transmission of
Control packets in AdminDown state was added to section 6.8.16. All
other changes are purely editorial in nature.
IPR Notice IPR Notice
The IETF has been notified of intellectual property rights claimed in The IETF has been notified of intellectual property rights claimed in
regard to some or all of the specification contained in this regard to some or all of the specification contained in this
document. For more information consult the online list of claimed document. For more information consult the online list of claimed
rights. rights.
The IETF takes no position regarding the validity or scope of any The IETF takes no position regarding the validity or scope of any
Intellectual Property Rights or other rights that might be claimed to Intellectual Property Rights or other rights that might be claimed to
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THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement Acknowledgement
Funding for the RFC Editor function is currently provided by the Funding for the RFC Editor function is currently provided by the
Internet Society. Internet Society.
This document expires in July, 2008. This document expires in September, 2008.
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