One document matched: draft-eriksson-ldp-convergence-term-00.txt
Network Working Group T. Eriksson
Internet-Draft TeliaSonera
Expires: August 9, 2004 S. Poretsky
Quarry Technologies
R. Papneja
Isocore
February 9, 2004
Terminology for Benchmarking LDP Data Plane Convergence
draft-eriksson-ldp-convergence-term-00.txt
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that other
groups may also distribute working documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at http://
www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
This Internet-Draft will expire on August 9, 2004.
Copyright Notice
Copyright (C) The Internet Society (2004). All Rights Reserved.
Abstract
This document defines new terms needed for benchmarking of LDP
convergence. Usefull existing terminology is also referenced.
Eriksson, et al. Expires August 9, 2004 [Page 1]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Existing Terminology . . . . . . . . . . . . . . . . . . . . . 3
2.1 BMWG Convergence Terms . . . . . . . . . . . . . . . . . . . . 3
2.2 MPLS/LDP Terms . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Term Definitions . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 LDP Binding Table . . . . . . . . . . . . . . . . . . . . . . 5
3.2 FEC Forwarding Table . . . . . . . . . . . . . . . . . . . . . 5
3.3 FEC Convergence Event . . . . . . . . . . . . . . . . . . . . 6
3.4 FEC Forwarding Table Convergence . . . . . . . . . . . . . . . 6
3.5 FEC Convergence . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Multiple Next-Hop FEC . . . . . . . . . . . . . . . . . . . . 7
3.7 Ingress LSR . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.8 Egress LSR . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Security Considerations . . . . . . . . . . . . . . . . . . . 9
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9
References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 9
Intellectual Property and Copyright Statements . . . . . . . . 10
Eriksson, et al. Expires August 9, 2004 [Page 2]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
1. Introduction
This draft describes the terminology for benchmarking LDP
Convergence. An accompanying document describes the methodology for
doing the benchmarking [TBD]. The main motivation for doing this work
is the increased focus on lowering convergence time for LDP as an
alternative to other solutions such as MPLS Fast Reroute.
The purpose of this documents is to find existing terminology as well
as define new terminology when needed terms are not available. The
terminology will support the methodology that will be based on
black-box testing of the LDP dataplane. The approach is very similar
to the one found in [3] and [4].
2. Existing Terminology
2.1 BMWG Convergence Terms
Route Convergence
Defined in [3].
Convergence Packet Loss
Defined in [3].
Convergence Event Instant
Defined in [3].
Convergence Recovery Instant
Defined in [3].
Rate-Derived Convergence Time
Defined in [3].
Convergence Event Transition
Defined in [3].
Convergence Recovery Transition
Defined in [3].
Loss-Derived Convergence Time
Defined in [3].
Restoration Convergence Time
Defined in [3].
Packet Sampling Interval
Defined in [3].
Eriksson, et al. Expires August 9, 2004 [Page 3]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
Local Interface
Defined in [3].
Neighbor Interface
Defined in [3].
Remote Interface
Defined in [3].
Preferred Egress Interface
Defined in [3].
Next-Best Egress Interface
Defined in [3].
Stale Forwarding
Defined in [3].
2.2 MPLS/LDP Terms
Label
Defined in [1].
FEC
Defined in [1].
Label Withdraw
Defined in [2].
IGP update message
Defined in TBD
LSP
Defined in [1].
LSR
Defined in [1].
Per-Interface label space
Defined in TBD.
Per-Platform label space
Defined in TBD
MPLS Node
Defined in [1].
Eriksson, et al. Expires August 9, 2004 [Page 4]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
MPLS Edge Node
Defined in [1].
MPLS Node
Defined in [1].
MPLS Edge Node
Defined in [1].
MPLS EgressNode
Defined in [1].
MPLS Ingress Node
Defined in [1].
Upstream LSR
Defined in [1].
Downstream LSR
Defined in [1].
3. Term Definitions
3.1 LDP Binding Table
Definition:
Table in which the LSR maintains all learned labels. It consists
of the prefix and label information bound to a peer's LDP
identifier and the list of sent and received bindings/peer.
Discussion:
None
Measurement Units:
N/A
Issues:
None
See Also:
FEC Forwarding Table
3.2 FEC Forwarding Table
Eriksson, et al. Expires August 9, 2004 [Page 5]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
Definition:
Table n which the LSR maintains the next hop information for the
particular FEC with the associated outgoing label and interface.
It is used for setting up the FEC forwarding table is retrieved
from the LIB entry.
Discussion:
None
Measurement Units:
N/A
Issues:
None
See Also:
LDP Binding Table
3.3 FEC Convergence Event
Definition:
The occurrence of a planned or unplanned action in the network
that results in a change to an LSR's LDP next-hop forwarding.
Discussion:
Convergence Events include link loss, routing protocol session
loss, router failure, and better next-hop.
Measurement Units:
N/A
Issues:
None
See Also:
FEC Forwarding Table Convergence
FEC Convergence
3.4 FEC Forwarding Table Convergence
Definition:
Recovery from a change in the FEC Forwarding Table due to a FEC
Convergence Event.
Discussion:
FEC Forwarding Table Convergence updates after the RIB and LDP
Binding Table update due to a FECConvergence Event. FEC Forwarding
Table Convergence can be observed externally by the rerouting of
data Traffic to a new egress interface.
Eriksson, et al. Expires August 9, 2004 [Page 6]
Measurement Units:
N/A
Issues:
None
See Also:
FEC Forwarding Table
FEC Convergence Event
FEC Convergence
3.5 FEC Convergence
Definition:
A change in the LDP Binding Table due to a FEC Convergence Event.
Discussion:
FEC Convergence is a change in an LDP Binding of a prefix and
label to a peer's LDP Identifier. This change can be an update or
recovery due to a FEC Convergence Event. FEC Convergence is an LSR
action made prior to FEC Forwarding Table Convergence. FEC
Convergence is not an externally observable Black-Box measurement.
Measurement Units:
N/A
Issues:
Where is LDP Identifier defined? Where is LDP Binding defined?
See Also:
LDP Binding Table
FEC Convergence Event
FEC Forwarding Table Convergence
3.6 Multiple Next-Hop FEC
Definition:
A FEC with more than one next-hop and associated outgoing label
and interface.
Discussion:
A Multiple Next-Hop FEC can be verified from the FEC Forwarding
Table and from externally observing traffic being forwarded to a
FEC on one or more interfaces.
Measurement Units:
N/A
Eriksson, et al. Expires August 9, 2004 [Page 7]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
Issues:
None
See Also:
FEC Forwarding Table
3.7 Ingress LSR
Definition:
An MPLS ingress node which is capable of forwarding native L3
packets.
Discussion:
None
Measurement Units:
N/A
Issues:
None
See Also:
MPLS Node
MPLS Edge Node
MPLS Egress Node
MPLS Ingress Node
Label Switching Router (LSR)
Egress LSR
3.8 Egress LSR
Definition:
An MPLS Egress node which is capable of forwarding native L3
packets.
Discussion:
None
Measurement Units:
N/A
Issues:
None
See Also:
MPLS Node
MPLS Edge Node
MPLS Egress Node
Eriksson, et al. Expires August 9, 2004 [Page 8]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
MPLS Ingress Node
Label Switching Router (LSR)
Ingress LSR
4. Security Considerations
TBD
5. Acknowledgements
References
[1] Rosen, E., Viswanathan, A. and R. Callon, "Multiprotocol Label
Switching Architecture", RFC 3031, January 2001.
[2] Andersson, L., Doolan, P., Feldman, N., Fredette, A. and B.
Thomas, "LDP Specification", RFC 3036, January 2001.
[3] Poretsky, S. and B. Imhoff, "Terminology for Benchmarking IGP
Data Plane Route Convergence",
draft-ietf-bmwg-igp-dataplane-conv-term-02.txt (work in
progress), January 2004.
[4] Poretsky, S. and B. Imhoff, "Benchmarking Methodology for IGP
Data Plane Route Convergence",
draft-ietf-bmwg-igp-dataplane-conv-meth-01.txt (work in
progress), October 2003.
Authors' Addresses
Thomas Eriksson
TeliaSonera
EMail: thomas.a.eriksson(at)teliasonera.com
Scott Poretsky
Quarry Technologies
EMail: sporetsky(at)quarrytech.com
Rajiv Papneja
Isocore
EMail: rpapneja(at)isocore.com
Eriksson, et al. Expires August 9, 2004 [Page 9]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
Intellectual Property Statement
The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementors or users of this specification can
be obtained from the IETF Secretariat.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.
Full Copyright Statement
Copyright (C) The Internet Society (2004). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assignees.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
Eriksson, et al. Expires August 9, 2004 [Page 10]
Internet-Draft Terminology for Benchmarking LDP Data Plane Convergence February 2004
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgment
Funding for the RFC Editor function is currently provided by the
Internet Society.
Eriksson, et al. Expires August 9, 2004 [Page 11]
| PAFTECH AB 2003-2026 | 2026-04-24 13:34:03 |