| Internet-Draft | BMP YANG Module | November 2022 |
| Cardona, et al. | Expires 29 May 2023 | [Page] |
This document proposes a YANG module for BMP (BGP Monitoring Protocol) configuration and monitoring. A complementary RPC triggers a refresh of the session of a BMP station.¶
This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.¶
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.¶
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."¶
This Internet-Draft will expire on 29 May 2023.¶
Copyright (c) 2022 IETF Trust and the persons identified as the document authors. All rights reserved.¶
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.¶
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.¶
Routing Information Bases, peers, monitoring stations are defined in [RFC7854].¶
This document specifies a YANG module for configuring and monitoring the BGP Monitoring Protocol (BMP) [RFC7854]. The model provides parameters for defining BMP monitoring stations, the selection of the BGP Routing Information Bases (RIBs), provides operational metrics and enables to reset BMP monitoring sessions.¶
The BMP YANG model provides the methods for managing BMP monitoring stations. It includes:¶
The following tree diagram provides an overview of the ietf-bmp.yang data model.¶
=============== NOTE: '\\' line wrapping per RFC 8792 ===============
module: ietf-bmp
+--rw bmp
+--rw stations
+--rw station* [id]
| +--rw id string
| +--rw connection
| | +--rw (passive-or-active)?
| | | +--:(active)
| | | | +--rw active
| | | | +--rw network-instance leafref
| | | | +--rw station-address inet:ip-address
| | | | +--rw station-port inet:port-number
| | | | +--rw local-address inet:ip-address
| | | | +--rw local-port? inet:port-number
| | | +--:(passive)
| | | +--rw passive
| | | +--rw network-instance leafref
| | | +--rw station-address inet:ip-address
| | | +--rw station-port? inet:port-number
| | | +--rw local-address? inet:ip-address
| | | +--rw local-port? inet:port-number
| | +--rw maximum-segment-size? uint16
| | +--rw mtu-discovery? boolean
| | +--rw keepalives! {keepalives-supported}?
| | | +--rw idle-time uint16
| | | +--rw max-probes uint16
| | | +--rw probe-interval uint16
| | +--rw secure-session-enable? boolean
| | +--rw secure-session
| | | +--rw (authentication)?
| | | +--:(ao)
| | | | +--rw ao-keychain?
| | | | key-chain:key-chain-ref
| | | +--:(md5)
| | | +--rw md5-keychain?
| | | key-chain:key-chain-ref
| | +--rw initial-delay? uint32
| | +--rw backoff
| | +--rw (backoff-options)?
| | +--:(simple-exponential)
| | +--rw simple-exponential
| | +--rw initial-backoff? uint32
| | +--rw maximum-backoff? uint32
| +--rw bmp-session
| | +--rw initiation-message? string
| | +--rw statistics-interval? uint32
| +--rw bmp-sources
| | +--rw bmp-route-monitoring
| | +--rw network-instances
| | +--rw network-instance* [network-instance-id]
| | +--rw network-instance-id union
| | +--rw adj-rib-in-pre
| | | +--rw enabled? boolean
| | | +--rw address-families
| | | +--rw address-family* [name]
| | | +--rw name leafref
| | | +--rw peers
| | | +--rw peer* [peer-id]
| | | +--rw peer-id union
| | | +--rw filters
| | | +--rw policy-filter
| | | +--rw export-policy* \
\ leafref
| | | +--rw default-export-pol\
\icy?
| | | rt-pol:default-p\
\olicy-type
| | +--rw adj-rib-in-post
| | | +--rw enabled? boolean
| | | +--rw address-families
| | | +--rw address-family* [name]
| | | +--rw name leafref
| | | +--rw peers
| | | +--rw peer* [peer-id]
| | | +--rw peer-id union
| | | +--rw filters
| | | +--rw policy-filter
| | | +--rw export-policy* \
\ leafref
| | | +--rw default-export-pol\
\icy?
| | | rt-pol:default-p\
\olicy-type
| | +--rw local-rib
| | | +--rw enabled? boolean
| | | +--rw address-families
| | | +--rw address-family*
| | | [address-family-id]
| | | +--rw address-family-id
| | | | identityref
| | | +--rw filters
| | | +--rw policy-filter
| | | +--rw export-policy* \
\ leafref
| | | +--rw default-export-policy?
| | | rt-pol:default-policy-\
\type
| | +--rw adj-rib-out-pre
| | | +--rw enabled? boolean
| | | +--rw address-families
| | | +--rw address-family* [name]
| | | +--rw name leafref
| | | +--rw peers
| | | +--rw peer* [peer-id]
| | | +--rw peer-id union
| | | +--rw filters
| | | +--rw policy-filter
| | | +--rw export-policy* \
\ leafref
| | | +--rw default-export-pol\
\icy?
| | | rt-pol:default-p\
\olicy-type
| | +--rw adj-rib-out-post
| | +--rw enabled? boolean
| | +--rw address-families
| | +--rw address-family* [name]
| | +--rw name leafref
| | +--rw peers
| | +--rw peer* [peer-id]
| | +--rw peer-id union
| | +--rw filters
| | +--rw policy-filter
| | +--rw export-policy* \
\ leafref
| | +--rw default-export-pol\
\icy?
| | rt-pol:default-p\
\olicy-type
| +--rw session-stats
| +--rw discontinuity-time
| | yang:date-and-time
| +--ro established-session? boolean
| +--ro total-route-monitoring-messages? uint64
| +--ro total-statistics-messages? uint64
| +--ro total-peer-down-messages? uint64
| +--ro total-peer-up-messages? uint64
| +--ro total-initiation-messages? uint64
| +--ro total-route-mirroring-messages? uint64
+--rw actions
+---x session-reset
+--ro output
+--ro (outcome)?
+--:(success)
| +--ro success? empty
+--:(failure)
+--ro failure? string
¶
<CODE BEGINS> file "ietf-bmp@2022-01-27.yang"¶
module ietf-bmp {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-bmp";
prefix bmp;
import ietf-yang-types {
prefix yang;
}
import ietf-inet-types {
prefix inet;
reference
"RFC 6991: Common YANG Data Types";
}
import ietf-routing {
prefix rt;
reference
"RFC 8349, A YANG Data Model for Routing Management
(NMDA Version).";
}
import ietf-bgp-types {
prefix bt;
reference
"RFC AAAA: BGP YANG module for Service Provider Network.
RFC-EDITOR: please update XXX with the RFC ID assigned
to I-D.ietf-idr-bgp-model";
}
import ietf-bgp {
prefix bgp;
reference
"RFC BBBB: BGP YANG module for Service Provider Network.
RFC-EDITOR: please update XXX with the RFC ID assigned
to I-D.ietf-idr-bgp-model";
}
import ietf-netconf-acm {
prefix nacm;
reference
"RFC 8341: Network Configuration Access Control Model";
}
import ietf-tcp-common {
prefix "tcpcmn";
reference
"I-D.ietf-netconf-tcp-client-server: YANG Groupings for TCP
Clients and TCP Servers.";
}
import ietf-network-instance {
prefix "ni";
reference
"RFC 8529: YANG Data Model for Network Instances";
}
import ietf-routing-policy {
prefix "rt-pol";
reference
"RFC 9067: A YANG Data Model for Routing Policy";
}
import ietf-key-chain {
prefix key-chain;
reference
"RFC 8177: YANG Key Chain.";
}
organization
"IETF GROW Working Group";
contact
"WG Web: <https://datatracker.ietf.org/wg/grow/>
WG List: <mailto:grow@ietf.org>
Author: Camilo Cardona
<mailto:camilo@ntt.net>
Author: Paolo Lucente
<mailto:cpaolo@ntt.net>
Author: Thomas Graf
<mailto:thomas.graf@swisscom.com>
Author: Benoit Claise
<mailto:benoit.claise@huawei.com>";
description
"This module specifies a structure for BMP
(BGP Monitoring Protocol) configuration and monitoring.
The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL',
'SHALL NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED',
'NOT RECOMMENDED', 'MAY', and 'OPTIONAL' in this document
are to be interpreted as described in BCP 14 (RFC 2119)
(RFC 8174) when, and only when, they appear in all
capitals, as shown here.
Copyright (c) 2022 IETF Trust and the persons identified as
authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject to
the license terms contained in, the Revised BSD License set
forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC 9196
(https://www.rfc-editor.org/info/rfc9196); see the RFC itself
for full legal notices.";
revision 2022-10-18 {
description
"initial version";
reference
"RFC YYYY: BMP YANG Module
RFC-EDITOR: please update YYYY with this RFC ID";
}
identity bmp-peer-types-idty {
description "Enum values for peer selection specific for BMP";
}
identity bmp-peer-types-all-peers-idty {
base bmp-peer-types-idty;
description "This identify is an explicit way
of defining that the device SHOULD send the
updates from all peers to the station for a
particular RIB/AFI.";
}
identity bmp-ni-types-idty {
description "Enum values for network instances
specific for BMP";
}
identity bmp-ni-types-all-ni-idty {
base bmp-ni-types-idty;
description "The identify is an explicit way
of defining that the device SHOULD send the
updates from all network instances.";
}
grouping bmp-tcp-options {
description
"TCP options for the connection to the station";
leaf maximum-segment-size {
type uint16;
description
"Maximum segment size for the TCP connections.";
}
// Taken from the bgp yang module
leaf mtu-discovery {
type boolean;
default "true";
description
"Turns path mtu discovery for the TCP sessions
on (true) or off (false).";
reference
"RFC 1191: Path MTU discovery.";
}
uses tcpcmn:tcp-common-grouping;
// taken from the bgp yang module
leaf secure-session-enable {
type boolean;
default "false";
description
"Does this session need to be secured?";
}
container secure-session {
when "../secure-session-enable = 'true'";
description
"Container for describing how a particular BMP session
is to be secured.";
choice authentication {
case ao {
leaf ao-keychain {
type key-chain:key-chain-ref;
description
"Reference to the key chain that will be used by
this model. Applicable for TCP-AO and TCP-MD5
only";
reference
"RFC 8177: YANG Key Chain.";
}
description
"Uses TCP-AO to secure the session. Parameters for
those are defined as a grouping in the TCP YANG
model.";
reference
"RFC 5925 - The TCP Authentication Option.";
}
case md5 {
leaf md5-keychain {
type key-chain:key-chain-ref;
description
"Reference to the key chain that will be used by
this model. Applicable for TCP-AO and TCP-MD5
only";
reference
"RFC 8177: YANG Key Chain.";
}
description
"Uses TCP-MD5 to secure the session. Parameters for
those are defined as a grouping in the TCP YANG
model.";
reference
"RFC 5925: The TCP Authentication Option.";
}
description
"Choice of TCP authentication.";
}
}
}
grouping bmp-ip-connection {
description
"common elements for defining connectivity
to a bmp station";
choice passive-or-active {
description
"Choice for active or passive connection";
case active {
description
"The device starts the connection to the station";
container active {
description
"The device starts the connection to the station";
leaf network-instance {
type leafref {
path "/ni:network-instances/ni:network-instance/"
+ "ni:name";
}
mandatory true;
description
"Network-instance to used to reach the station.";
}
leaf station-address {
type inet:ip-address;
mandatory true;
description
"Destination IP address of station";
}
leaf station-port {
type inet:port-number;
mandatory true;
description
"Destination port of the station";
}
leaf local-address {
type inet:ip-address;
mandatory true;
description
"Local IP address to source active connection";
}
leaf local-port {
type inet:port-number;
description
"Optional Local port for active connection";
}
}
}
case passive {
description
"The device waits for the connection
in a local endpoint";
container passive {
description
"The device waits for the connection
in a local endpoint";
leaf network-instance {
type leafref {
path "/ni:network-instances/ni:network-instance/"
+ "ni:name";
}
mandatory true;
description
"Network-instance to use to reach the station.";
}
leaf station-address {
type inet:ip-address;
mandatory true;
description
"address of station";
}
leaf station-port {
type inet:port-number;
description
"Optional port identifying the connection,
if provided it MUST match";
}
leaf local-address {
type inet:ip-address;
description
"Local IP address to wait for the connection";
}
leaf local-port {
type inet:port-number;
description
"Local port to wait for the connection";
}
}
}
}
}
grouping bmp-source-configuration {
description
"Group containing some general characteristics for configuring
a BMP source";
container filters {
description
"Contains containers specifying filters for deciding
which routes to export to the station";
container policy-filter {
description
"Filter routes based on a policy";
leaf-list export-policy {
type leafref {
path "/rt-pol:routing-policy/"
+ "rt-pol:policy-definitions/"
+ "rt-pol:policy-definition/rt-pol:name";
require-instance true;
}
ordered-by user;
description
"List of policy names in sequence used to select
routes to be exported to station.";
}
leaf default-export-policy {
type rt-pol:default-policy-type;
default "accept-route";
description
"Explicitly set a default policy if no policy
definition in the export policy chain
is satisfied.";
}
}
}
}
grouping bmp-peer-ribs-filter {
description
"Leaves for configuring RIBs where
origin/destination peers are well defined.";
leaf enabled {
type boolean;
description
"Enables the specified RIB";
}
container address-families {
description
"container for lists of address-families";
list address-family {
key "name";
description
"List of address families.
The name of the address family, as defined
in the BGP model is used for keying.";
leaf name {
type leafref {
path "/rt:routing/rt:control-plane-protocols/"
+ "rt:control-plane-protocol/bgp:bgp/"
+ "bgp:global/bgp:afi-safis/bgp:afi-safi/bgp:name";
}
description
"Name of the address family";
}
container peers {
description
"Identification of peers
for which we send BMP data to the collector";
list peer {
key "peer-id";
description
"Identification of peers
for which we send BMP data to the collector";
leaf peer-id {
type union {
type leafref {
path "/rt:routing/rt:control-plane-protocols/"
+ "rt:control-plane-protocol/bgp:bgp/"
+ "bgp:neighbors/bgp:neighbor/bgp:remote-address";
}
type bt:peer-type;
type identityref {
base bmp-peer-types-idty;
}
}
description
"Peers can be identified by a remote-address,
or by an enum value corresponding to groups
of peers. This way an operator can
select all external peers, all internal
peers, or all peers.";
}
uses bmp-source-configuration;
}
}
}
}
}
grouping bmp-route-monitoring-sources {
description
"Route monitoring sources";
container network-instances {
description
"container for lists of network-instances";
list network-instance {
key "network-instance-id";
description
"Network instance to monitory using BMP.";
leaf network-instance-id {
type union {
type leafref {
path "/ni:network-instances/ni:network-instance/"
+ "ni:name";
}
type identityref {
base bmp-ni-types-all-ni-idty;
}
}
description
"Identification of a network-instance.
Network instances can be identified
directly by their path or one can define all of
them using an identity";
}
container adj-rib-in-pre {
description
"Configuration for the adj-rib-in pre-policy";
reference
"RFC7854: BGP Monitoring Protocol (BMP), Section 2.";
uses bmp-peer-ribs-filter;
}
container adj-rib-in-post {
description
"Configuration for the adj-rib-in post-policy";
reference
"RFC7854: BGP Monitoring Protocol (BMP), Section 2.";
uses bmp-peer-ribs-filter;
}
container local-rib {
description
"Configuration for the local-rib";
reference
"RFC9069: Support for Local RIB in the BGP Monitoring
Protocol (BMP), Section 3.";
leaf enabled {
type boolean;
description
"Enables the specified RIB";
}
container address-families {
description
"List of address families to enable for
local-rib.";
list address-family {
key "address-family-id";
description
"Address family to enable for local-rib";
leaf address-family-id {
type identityref {
base bt:afi-safi-type;
}
description
"Address family id to enable for local-rib";
}
uses bmp-source-configuration;
}
}
}
container adj-rib-out-pre {
description
"Configuration for the adj-rib-out pre-policy";
uses bmp-peer-ribs-filter;
reference
"RFC8671: Support for Adj-RIB-Out in the BGP Monitoring
Protocol (BMP) , Section 3.";
}
container adj-rib-out-post {
description
"Configuration for the adj-rib-out post-policy";
uses bmp-peer-ribs-filter;
reference
"RFC8671: Support for Adj-RIB-Out in the BGP Monitoring
Protocol (BMP) , Section 3.";
}
}
}
}
grouping bmp-session-options {
description
"leaves for configuration of the bmp session";
leaf initiation-message {
type string;
description
"User defined message to append to the
initiation message";
}
leaf statistics-interval {
type uint32;
description
"Default Interval for statistic message.";
}
}
container bmp {
description
"Main level for BMP configuration ";
container stations {
description
"Container for the list of BMP stations";
list station {
key "id";
description
"Configuration for BMP stations.";
leaf id {
type string;
description
"Identification string for the station";
}
// Connection, missing tcp tuning params
// like keep-alives, segment sizes, etc.
container connection {
description
"Connection details for the station";
uses bmp-ip-connection;
uses bmp-tcp-options;
leaf initial-delay {
type uint32;
units "seconds";
default 0;
description
"Initial delay of the connection to the station";
}
container backoff {
description
"Configures the backoff strategy after a connection
retry";
choice backoff-options {
description
"Options for backoff strategies";
case simple-exponential {
description
"Simple exponential backoff with limits.";
container simple-exponential {
description
"Simple exponential backoff with limits.
Starts with the initial backoff and doubles
the backoff of every retry until reaching the
maximum backoff";
leaf initial-backoff {
type uint32;
units "seconds";
default 30;
description
"Initial backoff time";
}
leaf maximum-backoff {
type uint32;
units "seconds";
default 720;
description
"Maximum backoff time";
}
}
}
}
}
}
container bmp-session {
description
"BMP session options for the station";
uses bmp-session-options;
}
container bmp-sources {
description
"Configuration of the data sources for the station";
container bmp-route-monitoring {
description
"Configuration of the data sources for
route-monitoring messages";
uses bmp-route-monitoring-sources;
}
}
container session-stats {
description
"stats and operational values for the station";
leaf discontinuity-time {
type yang:date-and-time;
mandatory true;
description
"The time on the most recent occasion at which any
one or more of this station's counters suffered a
discontinuity. If no such discontinuities have
occurred since the last re-initialization of the
local management subsystem, then this node contains
the time the local management subsystem
re-initialized itself.";
}
leaf established-session {
type boolean;
config false;
description
"Value indicating if the session is currently
established";
}
leaf total-route-monitoring-messages {
type uint64;
config false;
description
"Number of route-monitoring messages sent since last
successful connection";
}
leaf total-statistics-messages {
type uint64;
config false;
description
"Number of statistics messages sent since last
successful connection";
}
leaf total-peer-down-messages {
type uint64;
config false;
description
"Number of peer-down messages sent since last
successful connection";
}
leaf total-peer-up-messages {
type uint64;
config false;
description
"Number of peer-up messages sent since last successful
connection";
}
leaf total-initiation-messages {
type uint64;
config false;
description
"Number of initiation messages sent since last
successful connection";
}
leaf total-route-mirroring-messages {
type uint64;
config false;
description
"Number of route-mirroring messages sent since last
successful connection";
}
}
}
container actions {
nacm:default-deny-all;
description
"Container with the actions for the BMP operation";
action session-reset {
description
"Resets the session for a station.";
output {
choice outcome {
description
"Output of the reset operation. Either a success or
failure. For the latter, the reason for the
error is provided.";
leaf success {
type empty;
description
"Reset successful";
}
leaf failure {
type string;
description
"Reset could not be performed.
Reason is included in the field";
}
}
}
}
}
}
}
}
¶
<CODE ENDS>¶
The YANG module specified in this document defines a schema for data that is designed to be accessed via network management protocols such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC8446]. The NETCONF Access Control Model (NACM) [RFC8341] provides the means to restrict access for NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and content.¶
BGP data is sensible for security considerations. The model described in this document could be used to send BGP information to malicious BMP stations. Write access to this model SHOULD therefore be properly protected.¶
The session-reset action can demand considerable amount of resources from network elements. It SHOULD thus be protected from illegal access.¶
This document registers a URIs in the IETF XML registry [RFC3688]. Following the format in [RFC3688], the following registrations are requested:¶
URI: urn:ietf:params:xml:ns:yang:ietf-bmp Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace.¶
This document registers the following YANG module in the " YANG Module Names" registry registry [RFC6020]:¶
Name: ietf-bmp Namespace: urn:ietf:params:xml:ns:yang:ietf-bmp Prefix: bmp Reference: [This RFC-to-be]¶
This section shows an example of a BMP configuration using the model. In the example, the device will send information from the global network instance, the adj-rib-out-pre RIB, IPv4 AFI, and only from peers that are external.¶
<bmp xmlns="urn:ietf:params:xml:ns:yang:ietf-bmp">
<stations>
<station>
<id>1</id>
<connection>
<active>
<network-instance>global</network-instance>
<station-address>203.0.113.1</station-address>
<station-port>49192</station-port>
<local-address>203.0.113.2</local-address>
</active>
</connection>
<bmp-sources>
<network-instances>
<network-instance>
<network-instance-id>global</network-instance-id>
<adj-rib-in-pre>
<enabled>true</enabled>
<address-families>
<address-family>
<name xmlns:bt="urn:ietf:params:xml:ns:yang:\/
ietf-bgp-types">bt:ipv4-unicast</name>
<peers>external</peers>
</address-family>
</address-families>
</adj-rib-out-pre>
</network-instance>
</network-instances>
</bmp-sources>
</station>
</stations>
</bmp>
¶
The authors would like to thank Yimin Shen, Jeff Haas, Pierre Vander Vorst, and Tom Petch for their review and feedback.¶