Network Working Group D. Liu
Internet-Draft J. Halpern
Intended status: Informational C. Zhang
Expires: 10 June 2022 Ericsson
7 December 2021
Interface Stack Table Definition for Point to Point (P2P) Interface over
LAN
draft-liu-lsr-p2poverlan-04
Abstract
In [RFC5309] defines the P2P circuit type is one of the mainly used
circuit types in link state routing protocol, and highlights it is
important to identify the correct circuit type when forming
adjacencies, flooding link state database packets, and monitor the
link state.
P2P Interface over LAN ifType value is assigned by IANA experts
review. This document provides an example of the ifStack for P2P
Interface over LAN ifType to facilitate operational control,
maintenance and statistics.
Status of This Memo
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This Internet-Draft will expire on 10 June 2022.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Please review these documents carefully, as they describe your rights
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Language . . . . . . . . . . . . . . . . . . . . 2
3. Interface Stack Table for P2P Interface Type . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.1. Normative references . . . . . . . . . . . . . . . . . . 4
6.2. Informative References . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
The assignment of a value (303, available at
https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#smi-
numbers-5) to p2pOverLan ifType was made by expert review. To
simplify configuration and operational control, it is helpful to
represent the fact that an interface is to be considered a P2P
Interface over LAN type explicitly in the interface stack. This
enables, for example, routing protocols to automatically inherit the
correct operating mode from interface stack without further
configuration(Not need to explicitly configure P2P Interface in
routing protocols).
So it is helpful to map P2P Interface over LAN type in interface
management stack table. And if no entry specify P2P Interface lower
layer, the management will suffer since lose the ability to get to
the lower layer specific management properties via many tools.
2. Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119] [RFC8174].
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3. Interface Stack Table for P2P Interface Type
If the device implements the IF-MIB [RFC2863], each entry in the
"/interfaces/interface" list (in "Interface Management YANG") in the
operational state is typically mapped to one ifEntry is required in
[RFC8343], therefore P2P Interface over LAN type should also fully
map to one ifEntry by defining the "ifStackTable" ("higher-layer-if"
and "lower-layer-if").
P2P interface higher layer should be network layer "ipForward"
(defined in IANA) to run routing protocol, P2P interface lower layer
is link data layer "ethernetCsmacd" (defined in IANA).
P2P interface type ifStackTable can be defined along the lines of
following example which complies with [RFC8343]:
isis_int
ianaift:ipForward
eth1
ianaift:ethernetCsmacd
p2p
ianaift:p2pOverLan
isis_int
eth1
false
down
down
2021-04-01T03:00:00+00:00
Figure 1
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4. Security Considerations
The interface stack table specified in this document is read-only.
Read operation to this table without complete protection shouldn't
have a negative effect on network operations.
5. IANA Considerations
In the Interface Types registry, IANA has previously assigned a value
of 303 for p2pOverLan with a reference of [RFC5309], as shown in
following table (available at https://www.iana.org/assignments/smi-
numbers/smi-numbers.xhtml#smi-numbers-5). IANA is requested to amend
the reference to point to this document and to make a similar
amendment in the YANG iana-if-type module [RFC7224] which currently
points to [RFC8561], as this document explains how the ifType is to
be used.
+=========+==================+==================+
| Decimal | Name | references |
+=========+==================+==================+
| 303 | p2pOverLan | RFC5309 |
+---------+------------------+------------------+
Figure 2
6. References
6.1. Normative references
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
.
[RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group
MIB", RFC 2863, DOI 10.17487/RFC2863, June 2000,
.
[RFC5309] Zinin, A. and N. Shen, "Point-to-Point Operation over LAN
in Link State Routing Protocols", RFC 5309,
DOI 10.17487/RFC5309, October 2008,
.
[RFC7224] Bjorklund, M., "IANA Interface Type YANG Module",
RFC 7224, DOI 10.17487/RFC7224, May 2014,
.
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[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", RFC 8174, IETF RFC 8174,
DOI 10.17487/RFC8174, May 2017,
.
[RFC8343] Bjorklund, M., "A YANG Data Model for Interface
Management", RFC 8343, DOI 10.17487/RFC8343, March 2018,
.
[RFC8561] Ahlberg, J., Ye, M., Li, X., Spreafico, D., and M.
Ahlberg, "A YANG Data Model for Microwave Radio Link",
RFC 8561, DOI 10.17487/RFC8561, June 2019,
.
6.2. Informative References
[RFC6991] Schoenwaelder, J., "Common YANG Data Types", RFC 6991,
DOI 10.17487/RFC6991, June 2011,
.
[RFC8340] Bjorklund, M. and L. Berger, "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
.
Authors' Addresses
Daiying Liu
Ericsson
No.5 Lize East street
Beijing
100102
China
Email: harold.liu@ericsson.com
Joel Halpern
Ericsson
Email: joel.halpern@ericsson.com
Congjie Zhang
Ericsson
Email: congjie.zhang@ericsson.com
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