This module contains a collection of YANG definitions for supporting the Broadband Forum requirements on layer 2 forwarding as a...
Version: 2022-03-01
module bbf-l2-forwarding { yang-version 1.1; namespace "urn:bbf:yang:bbf-l2-forwarding"; prefix bbf-l2-fwd; include bbf-l2-forwarding-base; include bbf-l2-forwarding-flooding-policies; include bbf-l2-forwarding-forwarders; include bbf-l2-forwarding-forwarding-databases; include bbf-l2-forwarding-mac-learning; include bbf-l2-forwarding-split-horizon-profiles; include bbf-l2-forwarding-mac-learning-control; organization "Broadband Forum <https://www.broadband-forum.org> Common YANG Work Area"; contact "Comments or questions about this Broadband Forum YANG module should be directed to <mailto:help@broadband-forum.org>. Editor: Nick Hancock, ADTRAN Editor: Ludwig Pauwels, Nokia PS Leader: Joey Boyd, ADTRAN WA Director: Joey Boyd, ADTRAN WA Director: Sven Ooghe, Nokia"; description "This module contains a collection of YANG definitions for supporting the Broadband Forum requirements on layer 2 forwarding as applicable to access network equipment. As such, this module is specific to access network equipment (e.g., BBF-specified Access Nodes and FTTdp DPUs). Copyright (c) 2017-2022, Broadband Forum Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. The above license is used as a license under copyright only. Please reference the Forum IPR Policy for patent licensing terms <https://www.broadband-forum.org/ipr-policy>. Any moral rights which are necessary to exercise under the above license grant are also deemed granted under this license. This version of this YANG module is part of TR-383a5; see the TR itself for full legal notices."; revision "2022-03-01" { description "Amendment 5. * Approval Date: 2022-03-01. * Publication Date: 2022-03-01."; reference "TR-383a5: Common YANG Modules <https://www.broadband-forum.org/technical/download/ TR-383_Amendment-5.pdf>"; } revision "2020-10-13" { description "Amendment 3. * Approval Date: 2020-10-13. * Publication Date: 2020-10-13."; reference "TR-383a3: Common YANG Modules <https://www.broadband-forum.org/technical/download/ TR-383_Amendment-3.pdf>"; } revision "2018-12-03" { description "Amendment 2. * Approval Date: 2018-12-03. * Publication Date: 2018-12-03."; reference "TR-383a2: Common YANG Modules <https://www.broadband-forum.org/technical/download/ TR-383_Amendment-2.pdf>"; } revision "2018-07-13" { description "Amendment 1. * Approval Date: 2018-06-04. * Publication Date: see revision date above."; reference "TR-383: Common YANG Modules <https://www.broadband-forum.org/technical/download/ TR-383_Amendment-1.pdf>"; } revision "2017-05-08" { description "Initial revision. * Approval Date: see revision date above. * Publication Date: 2017-06-02."; reference "TR-383: Common YANG Modules <https://www.broadband-forum.org/technical/download/ TR-383.pdf>"; } // features feature forwarder-port-groups { description "Indicates support for a grouping of forwarder ports."; } feature flooding-policies { description "Indicates support for flooding policies."; } feature flooding-policies-profiles { description "Indicates support for flooding policies profiles."; } feature forwarding-databases { description "Indicates support for forwarding databases."; } feature shared-forwarding-databases { description "Indicates support for a single forwarding database being shared by multiple forwarders."; } feature mac-learning { description "This feature indicates whether the network element supports MAC learning."; } feature read-system-fdb-capacity { description "Provides the system's capacity for forwarding databases, i.e. the total number of entries for all forwarding databases together."; } feature split-horizon-profiles { description "Indicates support for split horizon profiles."; } feature mac-learning-control-profiles { description "Indicates support for MAC address learning control profiles."; } // typedefs typedef forwarder-ref { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder/bbf-l2-fwd:name"; } description "This type is used by data models that need to reference configured forwarders."; } typedef forwarder-state-ref { type leafref { path "/bbf-l2-fwd:forwarding-state/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder/bbf-l2-fwd:name"; } description "This type is used by data models that need to reference operational forwarders."; } // objects container forwarding { description "Configuration nodes associated with layer 2 forwarding."; container forwarders { description "A forwarder is used to forward traffic between interfaces."; list forwarder { key "name"; description "A list of forwarders."; leaf name { type bbf-yang:string-ascii64; description "The name of the forwarder."; } container ports { description "Configuration for ports associated with this forwarder."; list port { key "name"; description "The list of ports associated with this forwarder."; leaf name { type bbf-yang:string-ascii64; description "The name of the forwarder port."; } leaf sub-interface { type if:interface-ref; must "derived-from-or-self( /if:interfaces/if:interface[if:name = current()] /if:type, 'bbfift:vlan-sub-interface') or derived-from-or-self( /if:interfaces/if:interface[if:name = current()] /if:type, 'bbfift:l2-termination')" { description "The type of interface being referenced MUST either be a 'vlan-sub-interface', 'l2-termination' or a derivation of either type."; } must "count(/bbf-l2-fwd:forwarding /bbf-l2-fwd:forwarders /bbf-l2-fwd:forwarder /bbf-l2-fwd:ports/bbf-l2-fwd:port [bbf-l2-fwd:sub-interface = current()])< 2" { description "No two forwarder ports can refer to the same sub-interface."; } description "The VLAN sub-interface or layer 2 termination associated with this port."; } } // list port } // container ports container port-groups { if-feature forwarder-port-groups; description "A group of ports associated with this forwarder that have common forwarding characteristics."; list port-group { key "name"; description "A list of port groups"; leaf name { type bbf-yang:string-ascii64; description "The name of the group."; } leaf-list port { type leafref { path "../../../bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "A grouping of ports associated with this forwarder."; } } // list port-group } // container port-groups container flooding-policies { if-feature flooding-policies; description "The flooding-policies define how the system shall forward frames in case the other forwarding mechanisms did not come to a forwarding decision. For example, when the destination unicast MAC address is not available in the forwarding database. For multicast frames this applies when there is no corresponding entry found in the (IGMP controlled) multicast tree. For broadcast frames this applies when there is no other protocol specific behavior knowledge. The default behavior for when there is no flooding policy is that the frame is flooded to all ports of the forwarder, except to the port on which the frame is received. In other words, a flooding-policy intends to restrict this flooding."; choice flooding-policy-type { description "Provides alternative ways to define flooding policies."; case profile-based { if-feature flooding-policies-profiles; leaf flooding-policies-profile { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:flooding-policies-profiles/bbf-l2-fwd:flooding-policies-profile/bbf-l2-fwd:name"; } description "A reference to a flooding policies profile."; } } // case profile-based list flooding-policy { key "name"; ordered-by user; description "A flooding-policy defines for the tuple (list of in-ports, a frame classification), if and to which other ports the frame shall be flooded. The absence of data for a particular combination results in the default forwarding behavior to flood the frame to all ports of the forwarder, except the one on which the frame is received."; leaf name { type bbf-yang:string-ascii64; description "The name of the flooding policy."; } container in-ports { description "List of forwarder ports on which the frame classification applies."; choice list-type { description "Provides alternatives to provide a single or a set of forwarder ports. If no case is configured, the classification is not applied to any forwarding ports resulting in a non-functional flooding policy."; leaf forwarder-port { type leafref { path "../../../../bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "A reference to a forwarder port within this forwarder."; } case forwarder-port-group { if-feature forwarder-port-groups; leaf forwarder-port-group { type leafref { path "../../../../bbf-l2-fwd:port-groups/bbf-l2-fwd:port-group/bbf-l2-fwd:name"; } description "A reference to a forwarder port group within this forwarder."; } } // case forwarder-port-group } // choice list-type } // container in-ports container destination-address { description "The frame classification to be performed on the destination MAC or IP address. Note that the MAC filter also allows specification of unicast addresses. If used this will apply to frames for which there was no forwarding decision identified via other means."; choice frame-filter { description "Identifies the set of frames to which the frame-forwarding action shall apply. If no case is configured, then the destination of the frame is not a matching criterion and then, as to this matching criterion, 'all frames match'."; case any-frame { description "Any frame. Configuring this 'any-frame' case is equivalent to not configuring any of the cases of this choice and means that 'all frames match'. Configuring allows to have some explicit configuration, e.g. in case of the Transparent LAN service."; leaf any-frame { type empty; description "Any frame."; } } // case any-frame case destination-mac-address { description "The frame classification to be performed on the destination MAC address."; choice mac-address { description "A choice on the value of the MAC address."; case any-multicast-mac-address { description "This represents the multicast MAC addresses, i.e. addresses for which the least significant bit of the first octet is set to 1."; leaf any-multicast-mac-address { type empty; description "Indicates the MAC address is a multicast address."; } } // case any-multicast-mac-address case unicast-address { description "This represents the unicast MAC addresses, i.e. addresses for which the least significant bit of the first octet is set to 0 (zero)."; leaf unicast-address { type empty; description "Indicates the MAC address is a unicast address."; } } // case unicast-address case broadcast-address { description "This represents the broadcast MAC address, i.e. address FF:FF:FF:FF:FF:FF."; leaf broadcast-address { type empty; description "Indicates the MAC address is a broadcast address."; } } // case broadcast-address case cfm-multicast-address { description "This represents a mask for all CFM OAM multicast addresses. These are the addresses of the form 01:80:C2:00:00:3X."; leaf cfm-multicast-address { type empty; description "Indicates the MAC address is a CFM multicast address."; reference "IEEE 802.1Q-2014, section 8.13.11"; } } // case cfm-multicast-address case ipv4-multicast-address { description "This represents a mask for all IPv4 multicast addresses. These are the addresses in the range 01:00:5E:00:00:00 up to and including 01:00:5E:7F:FF:FF."; leaf ipv4-multicast-address { type empty; description "Indicates the MAC address is an IPv4 multicast address."; } } // case ipv4-multicast-address case ipv6-multicast-address { description "This represents a mask for all IPv6 multicast addresses. These are the addresses of the form 33:33:XX:XX:XX:XX."; leaf ipv6-multicast-address { type empty; description "Indicates the MAC address is an IPv6 multicast address."; } } // case ipv6-multicast-address case mac-address-filter { description "The value and the mask together identify a set of MAC addresses that comply with this classification. Evaluation is performed by making a bit-wise AND operation between the to be evaluated MAC address and the mac-address-mask. There is a match if the result equals the value specified in the mac-address-value."; leaf mac-address-value { type yang:mac-address; description "The value with which a comparison shall be made after performing the bit-wise AND operation on the to be evaluated MAC address."; } leaf mac-address-mask { type yang:mac-address; default "FF:FF:FF:FF:FF:FF"; description "A mask to be applied on the to be evaluated MAC address. The mask is applied as a bit-wise AND operation."; } } // case mac-address-filter } // choice mac-address } // case destination-mac-address case destination-ipv4-address { description "The frame classification to be performed on the destination IPv4 address."; choice ipv4-address { description "A choice on the value of the IPv4 address."; case any-multicast-ipv4-address { description "This represents all IPv4 addresses in the range 224.0.0.0 up to 239.255.255.255."; leaf any-multicast-ipv4-address { type empty; description "Indicates the address is an IPv4 multicast group address."; } } // case any-multicast-ipv4-address case all-hosts-multicast-address { description "This represents the 'all hosts' IPv4 multicast group address 224.0.0.1 that is used to address all hosts on the same network segment."; leaf all-hosts-multicast-address { type empty; description "Indicates the IPv4 address is the 'all hosts' IPv4 multicast group address."; } } // case all-hosts-multicast-address case rip-multicast-address { description "This represents the RIP version 2 IPv4 multicast group address 224.0.0.9 that is used to send routing information to all RIPv2-aware routers on a network segment."; leaf rip-multicast-address { type empty; description "Indicates the IPv4 address is the RIP version 2 IPv4 multicast group address."; } } // case rip-multicast-address case ntp-multicast-address { description "This represents the NTP group IPv4 multicast group address 224.0.1.1 that is used to send network timing protocol messages to all NTP clients on a network segment."; leaf ntp-multicast-address { type empty; description "Indicates the IPv4 address is the NTP IPv4 multicast group address."; } } // case ntp-multicast-address case ipv4-prefix { if-feature bbf-classif:filter-on-ip-prefix; description "This represents an IPv4 address prefix."; leaf ipv4-prefix { type inet:ipv4-prefix; description "This represents an IPv4 address prefix. The prefix length is given by the number following the slash character and must be less than or equal to 32."; } } // case ipv4-prefix } // choice ipv4-address } // case destination-ipv4-address case destination-ipv6-address { description "The frame classification to be performed on the destination IPv6 address."; choice ipv6-address { description "A choice on the value of the IPv6 address."; case any-multicast-ipv6-address { description "This represents all IPv6 addresses which use the prefix ff00::/8."; leaf any-multicast-ipv6-address { type empty; description "Indicates the address is an IPv6 multicast address."; } } // case any-multicast-ipv6-address case all-nodes-multicast-ipv6-address { description "This represents the 'all nodes' IPv6 multicast address ff02::1 which is used to address all nodes on the local network segment."; leaf all-nodes-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the 'all nodes' IPv6 multicast address."; } } // case all-nodes-multicast-ipv6-address case rip-multicast-ipv6-address { description "This represents the Routing Information Protocol(RIP) IPv6 multicast address ff02::9 which is used to send routing information to all RIP aware routers on a network segment."; leaf rip-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the RIP routers IPv6 multicast address."; } } // case rip-multicast-ipv6-address case ntp-multicast-ipv6-address { description "This represents the NTP IPv6 multicast address ff02::101 which is used to send Network Timing Protocol (NTP) messages to all NTP clients on a network segment."; leaf ntp-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the NTP IPv6 multicast address."; } } // case ntp-multicast-ipv6-address case ipv6-prefix { if-feature bbf-classif:filter-on-ip-prefix; description "This represents an IPv6 address prefix."; leaf ipv6-prefix { type inet:ipv6-prefix; description "This represents an IPv6 address prefix. The prefix length is given by the number following the slash character and must be less than or equal to 128."; } } // case ipv6-prefix } // choice ipv6-address } // case destination-ipv6-address } // choice frame-filter } // container destination-address choice frame-forwarding { description "Identifies the action to be performed on frames that match the classification. Not configuring a frame forwarding case means that the frames in scope shall be discarded. In order not to discard these frames one shall configure a non-empty 'out-ports' container."; leaf discard { type empty; description "The frame shall be discarded."; } container out-ports { description "List of ports to which the frame shall be forwarded."; choice list-type { description "Specifies how to where to forward the frames."; leaf forwarder-port { type leafref { path "../../../../bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "A reference to a forwarder port within the same forwarder."; } case forwarder-port-group { if-feature forwarder-port-groups; leaf forwarder-port-group { type leafref { path "../../../../bbf-l2-fwd:port-groups/bbf-l2-fwd:port-group/bbf-l2-fwd:name"; } description "A reference to a forwarder port group within the same forwarder."; } } // case forwarder-port-group } // choice list-type } // container out-ports } // choice frame-forwarding } // list flooding-policy } // choice flooding-policy-type } // container flooding-policies container mac-learning { if-feature forwarding-databases; description "The forwarding decision for each frame shall result in an unambiguous decision on the outgoing forwarder port(s). This combined with the dynamic behavior of MAC address learning results in the need for a unique learning decision or static configuration of MAC addresses. In case the same source MAC address is used on multiple interfaces, then various strategies can be applied: - learn the MAC address the first time it is used, and at the occasion of a second attempt, do not move the MAC address from the first forwarder port to another, instead generate an alarm for attempts of an undesired MAC movement. - learn/move the MAC address on/to the forwarder port where it is used the last time. - perform MAC address translation into a unique MAC address. This strategy is also port specific: e.g. in case a MAC address is learned on a user port, then it might be forbidden to move it to another user port, while it is acceptable to move it to the network port."; leaf forwarding-database { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:forwarding-databases/bbf-l2-fwd:forwarding-database/bbf-l2-fwd:name"; } description "A reference to a forwarding database. The absence of a reference to a forwarding datase automatically means that MAC addresses are not learned."; } } // container mac-learning container split-horizon-profiles { if-feature split-horizon-profiles; description "A split-horizon-profile allows to restrict forwarding between its forwarder ports based on their interface usages. Without split-horizon-profile, frames can be forwarded within a forwarder from any of its forwarder ports to any other of its forwarder ports."; leaf split-horizon-profile { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:split-horizon-profiles/bbf-l2-fwd:split-horizon-profile/bbf-l2-fwd:name"; } description "A reference to a split horizon profile associated with a forwarder."; } } // container split-horizon-profiles } // list forwarder } // container forwarders container flooding-policies-profiles { if-feature flooding-policies-profiles; description "Contains a set of flooding policies profiles. The flooding policies define how the system shall forward frames in case the other forwarding mechanisms did not come to a forwarding decision, e.g. when the destination unicast MAC address is not available in the forwarding database. For multicast frames this applies when there is no corresponding entry found in the (IGMP controlled) multicast tree. For broadcast frames this applies when there is no other protocol specific behavior knowledge."; list flooding-policies-profile { key "name"; description "The configuration of a flooding policies profile. One flooding policies profile can contain multiple policies."; leaf name { type bbf-yang:string-ascii64; description "The name of a flooding policies profile."; } list flooding-policy { key "name"; ordered-by user; description "A flooding-policy defines for the tuple (list of in-interface-usages, a frame classification), if and to which other interface usages the frame shall be flooded. The absence of data for a particular combination results in the default forwarding behavior to flood the frame to all ports of the forwarder, except the one on which the frame is received."; leaf name { type bbf-yang:string-ascii64; description "The name of a flooding policy."; } container in-interface-usages { description "Identifies the forwarder ports on which the classification shall apply. The actual identification is indirect: a forwarder port references a VLAN sub-interface and this VLAN sub-interface has an interface usage."; leaf-list interface-usages { type bbf-if-usg:interface-usage; description "List of interface-usages to which the frame classification applies. An empty list means that the classification is not applied to any interface usage resulting in a non-functional flooding policy."; } } // container in-interface-usages container destination-address { description "The frame classification to be performed on the destination MAC or IP address. Note that the MAC filter also allows specification of unicast addresses. If used this will apply to frames for which there was no forwarding decision identified via other means."; choice frame-filter { description "Identifies the set of frames to which the frame-forwarding action shall apply. If no case is configured, then the destination of the frame is not a matching criterion and then, as to this matching criterion, 'all frames match'."; case any-frame { description "Any frame. Configuring this 'any-frame' case is equivalent to not configuring any of the cases of this choice and means that 'all frames match'. Configuring allows to have some explicit configuration, e.g. in case of the Transparent LAN service."; leaf any-frame { type empty; description "Any frame."; } } // case any-frame case destination-mac-address { description "The frame classification to be performed on the destination MAC address."; choice mac-address { description "A choice on the value of the MAC address."; case any-multicast-mac-address { description "This represents the multicast MAC addresses, i.e. addresses for which the least significant bit of the first octet is set to 1."; leaf any-multicast-mac-address { type empty; description "Indicates the MAC address is a multicast address."; } } // case any-multicast-mac-address case unicast-address { description "This represents the unicast MAC addresses, i.e. addresses for which the least significant bit of the first octet is set to 0 (zero)."; leaf unicast-address { type empty; description "Indicates the MAC address is a unicast address."; } } // case unicast-address case broadcast-address { description "This represents the broadcast MAC address, i.e. address FF:FF:FF:FF:FF:FF."; leaf broadcast-address { type empty; description "Indicates the MAC address is a broadcast address."; } } // case broadcast-address case cfm-multicast-address { description "This represents a mask for all CFM OAM multicast addresses. These are the addresses of the form 01:80:C2:00:00:3X."; leaf cfm-multicast-address { type empty; description "Indicates the MAC address is a CFM multicast address."; reference "IEEE 802.1Q-2014, section 8.13.11"; } } // case cfm-multicast-address case ipv4-multicast-address { description "This represents a mask for all IPv4 multicast addresses. These are the addresses in the range 01:00:5E:00:00:00 up to and including 01:00:5E:7F:FF:FF."; leaf ipv4-multicast-address { type empty; description "Indicates the MAC address is an IPv4 multicast address."; } } // case ipv4-multicast-address case ipv6-multicast-address { description "This represents a mask for all IPv6 multicast addresses. These are the addresses of the form 33:33:XX:XX:XX:XX."; leaf ipv6-multicast-address { type empty; description "Indicates the MAC address is an IPv6 multicast address."; } } // case ipv6-multicast-address case mac-address-filter { description "The value and the mask together identify a set of MAC addresses that comply with this classification. Evaluation is performed by making a bit-wise AND operation between the to be evaluated MAC address and the mac-address-mask. There is a match if the result equals the value specified in the mac-address-value."; leaf mac-address-value { type yang:mac-address; description "The value with which a comparison shall be made after performing the bit-wise AND operation on the to be evaluated MAC address."; } leaf mac-address-mask { type yang:mac-address; default "FF:FF:FF:FF:FF:FF"; description "A mask to be applied on the to be evaluated MAC address. The mask is applied as a bit-wise AND operation."; } } // case mac-address-filter } // choice mac-address } // case destination-mac-address case destination-ipv4-address { description "The frame classification to be performed on the destination IPv4 address."; choice ipv4-address { description "A choice on the value of the IPv4 address."; case any-multicast-ipv4-address { description "This represents all IPv4 addresses in the range 224.0.0.0 up to 239.255.255.255."; leaf any-multicast-ipv4-address { type empty; description "Indicates the address is an IPv4 multicast group address."; } } // case any-multicast-ipv4-address case all-hosts-multicast-address { description "This represents the 'all hosts' IPv4 multicast group address 224.0.0.1 that is used to address all hosts on the same network segment."; leaf all-hosts-multicast-address { type empty; description "Indicates the IPv4 address is the 'all hosts' IPv4 multicast group address."; } } // case all-hosts-multicast-address case rip-multicast-address { description "This represents the RIP version 2 IPv4 multicast group address 224.0.0.9 that is used to send routing information to all RIPv2-aware routers on a network segment."; leaf rip-multicast-address { type empty; description "Indicates the IPv4 address is the RIP version 2 IPv4 multicast group address."; } } // case rip-multicast-address case ntp-multicast-address { description "This represents the NTP group IPv4 multicast group address 224.0.1.1 that is used to send network timing protocol messages to all NTP clients on a network segment."; leaf ntp-multicast-address { type empty; description "Indicates the IPv4 address is the NTP IPv4 multicast group address."; } } // case ntp-multicast-address case ipv4-prefix { if-feature bbf-classif:filter-on-ip-prefix; description "This represents an IPv4 address prefix."; leaf ipv4-prefix { type inet:ipv4-prefix; description "This represents an IPv4 address prefix. The prefix length is given by the number following the slash character and must be less than or equal to 32."; } } // case ipv4-prefix } // choice ipv4-address } // case destination-ipv4-address case destination-ipv6-address { description "The frame classification to be performed on the destination IPv6 address."; choice ipv6-address { description "A choice on the value of the IPv6 address."; case any-multicast-ipv6-address { description "This represents all IPv6 addresses which use the prefix ff00::/8."; leaf any-multicast-ipv6-address { type empty; description "Indicates the address is an IPv6 multicast address."; } } // case any-multicast-ipv6-address case all-nodes-multicast-ipv6-address { description "This represents the 'all nodes' IPv6 multicast address ff02::1 which is used to address all nodes on the local network segment."; leaf all-nodes-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the 'all nodes' IPv6 multicast address."; } } // case all-nodes-multicast-ipv6-address case rip-multicast-ipv6-address { description "This represents the Routing Information Protocol(RIP) IPv6 multicast address ff02::9 which is used to send routing information to all RIP aware routers on a network segment."; leaf rip-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the RIP routers IPv6 multicast address."; } } // case rip-multicast-ipv6-address case ntp-multicast-ipv6-address { description "This represents the NTP IPv6 multicast address ff02::101 which is used to send Network Timing Protocol (NTP) messages to all NTP clients on a network segment."; leaf ntp-multicast-ipv6-address { type empty; description "Indicates the IPv6 address is the NTP IPv6 multicast address."; } } // case ntp-multicast-ipv6-address case ipv6-prefix { if-feature bbf-classif:filter-on-ip-prefix; description "This represents an IPv6 address prefix."; leaf ipv6-prefix { type inet:ipv6-prefix; description "This represents an IPv6 address prefix. The prefix length is given by the number following the slash character and must be less than or equal to 128."; } } // case ipv6-prefix } // choice ipv6-address } // case destination-ipv6-address } // choice frame-filter } // container destination-address choice frame-forwarding { description "Identifies the action to be performed on frames that match the classification. Not configuring a frame forwarding case means that the frames in scope shall be discarded. In order not to discard these frames one shall configure a non-empty 'out-interface-usages leaf-list."; leaf discard { type empty; description "The frame will be discarded."; } container out-interface-usages { description "Identifies the forwarder ports to which the frame shall be forwarded. The actual identification is indirect: a forwarder port references a VLAN sub-interface and this VLAN sub-interface has an interface usage."; leaf-list interface-usages { type bbf-if-usg:interface-usage; description "List of interface usages to which the frame shall be forwarded."; } } // container out-interface-usages } // choice frame-forwarding } // list flooding-policy } // list flooding-policies-profile } // container flooding-policies-profiles container forwarding-databases { if-feature forwarding-databases; description "Forwarding databases configuration."; list forwarding-database { key "name"; description "The configuration of a specific forwarding database."; leaf name { type bbf-yang:string-ascii64; description "The name associated with the forwarding database."; } leaf max-number-mac-addresses { type uint32; default "4294967295"; description "Limits the number of MAC addresses that can be stored in this forwarding database."; } leaf aging-timer { if-feature mac-learning; type uint32; units "seconds"; default "300"; description "MAC addresses are learned in the forwarding database against a forwarder port or against an interface. When no incoming traffic on this forwarder port or interface is received with a particular MAC address as source MAC address for a period specified in this aging timer, then this MAC address is removed from the forwarding database."; } leaf shared-forwarding-database { if-feature shared-forwarding-databases; type boolean; default "false"; description "If true, the forwarding database instance can be referenced by multiple forwarder instances. If false it can be referenced from only one forwarder instance."; } list static-mac-address { key "mac-address"; description "A policy for a configured MAC address specifies a learning constraint for it. The static configuration of MAC addresses serves multiple purposes: - it can be configured with a rule that forbids to learn this MAC address - it can be configured with a list of ports or interfaces on which the MAC address can be learned - it can be statically assigned to a specific port or interface. The absence of a policy for a particular MAC address means that there is no MAC learning constraint, i.e. the MAC address can be learned on any port or interface."; leaf mac-address { type yang:mac-address; description "The MAC address to which the constraint applies."; } choice learning-constraint { description "Provides alternative frame processing decisions for when the source MAC address of a frame matches the value of the leaf mac-address. Not configuring a learning-constraint case means that the frame will be discarded and the source MAC address will not be learned. In order not to discard the frame, and/or to learn the MAC address, one shall configure a data node different from 'discard-frame'."; leaf discard-frame { type empty; description "The frame shall be discarded."; } case allowed-to-learn-on { if-feature mac-learning; choice allow-to-learn-on { description "The source MAC address of the frame can be learned on any of the ports or interfaces as identified further."; container forwarder-port-ref { description "The reference to a forwarder port on which the MAC address can be learned."; leaf forwarder { type forwarder-ref; description "This leaf references a forwarder."; } leaf port { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder[bbf-l2-fwd:name = current()/../forwarder]/bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "This leaf references a port within the forwarder identified by the leaf 'forwarder'."; } } // container forwarder-port-ref case forwarder-port-group { if-feature forwarder-port-groups; container forwarder-port-group-ref { description "The reference to a group of forwarder ports, the MAC address can be learned on any of these forwarder ports."; leaf forwarder { type forwarder-ref; description "This leaf references a forwarder."; } leaf group { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder[bbf-l2-fwd:name = current()/../forwarder]/bbf-l2-fwd:port-groups/bbf-l2-fwd:port-group/bbf-l2-fwd:name"; } description "This leaf references a port-group within the forwarder identified by the leaf 'forwarder'."; } } // container forwarder-port-group-ref } // case forwarder-port-group } // choice allow-to-learn-on } // case allowed-to-learn-on choice install-on { description "The source MAC address is statically configured in the forwarding database on a specified port or interface."; case static-port { description "The MAC address is added statically to a forwarder port."; container static-forwarder-port-ref { description "The reference to a forwarder port on which the MAC address will be statically installed and as such affect the forwarding behavior immediately."; leaf forwarder { type forwarder-ref; description "This leaf references a forwarder."; } leaf port { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder[bbf-l2-fwd:name = current()/../forwarder]/bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "This leaf references a port within the forwarder identified by the leaf 'forwarder'."; } } // container static-forwarder-port-ref } // case static-port } // choice install-on } // choice learning-constraint } // list static-mac-address container mac-learning-control { if-feature mac-learning and mac-learning-control-profiles; description "The MAC learning control defines how the system shall act when a frame is received for which the source MAC address was not learned before on the port or interface where the frame is received."; leaf mac-learning-control-profile { type leafref { path "/bbf-l2-fwd:forwarding/bbf-l2-fwd:mac-learning-control-profiles/bbf-l2-fwd:mac-learning-control-profile/bbf-l2-fwd:name"; } description "A reference to a MAC address learning control profile."; } leaf generate-mac-learning-alarm { type boolean; default "false"; description "If true, an alarm shall be generated on an attempt of a not allowed MAC movement. Allowed / not allowed MAC movements are controlled via the referenced entry in the list mac-learning-control-profile."; } } // container mac-learning-control } // list forwarding-database } // container forwarding-databases container split-horizon-profiles { if-feature split-horizon-profiles; description "Split horizon profile configuration."; list split-horizon-profile { key "name"; description "A profile manages (not) allowed forwarding between various forwarder ports based on their underlying interface usage. The absence of data for a particular in-interface-usage has a result that from that type of forwarder ports frames are allowed to be forwarded to any other forwarder port."; leaf name { type bbf-yang:string-ascii64; description "The name of the profile."; } list split-horizon { key "in-interface-usage"; description "Frame forwarding is not allowed from interfaces/ports that have an interface usage as specified in in-interface-usage to interfaces/ports that have an interface usage for which the value is in the leaf-list 'out-interface-usage'."; leaf in-interface-usage { type bbf-if-usg:interface-usage; description "The interface usage from which forwarding is specified here."; } leaf-list out-interface-usage { type bbf-if-usg:interface-usage; description "The interface usage to which frames coming from the 'in-interface-usage' are not allowed to be forwarded. Frame forwarding to interface usages not configured is allowed."; } } // list split-horizon } // list split-horizon-profile } // container split-horizon-profiles container mac-learning-control-profiles { if-feature forwarding-databases and mac-learning and mac-learning-control-profiles; description "Contains a set of MAC address learning control profiles."; list mac-learning-control-profile { key "name"; description "The configuration of a MAC address learning control profile. A profile controls the MAC address learning behavior that deviates from the default MAC learning in an IEEE bridge, i.e. that behavior that deviates from 'learn on the last port or interface on which a frame with the corresponding source MAC address is received'. This implies that the default behavior is that the MAC address is always learned and that MAC movement is allowed from any port or interface to any other port or interface, except if this would be in conflict with static MAC address configuration."; leaf name { type bbf-yang:string-ascii64; description "The name of a MAC address learning control profile."; } list mac-learning-rule { key "receiving-interface-usage"; description "Defines what to do when a frame is received with a particular source MAC address and this MAC address is not yet stored on that port or interface."; leaf receiving-interface-usage { type bbf-if-usg:interface-usage; description "Defines MAC address learning rules for frames received on a port for which the interface usage of the underlying interface is of this value."; } choice mac-learning-action { description "Specifies how to learn a MAC address on a port or interface that has a usage specified by the leaf receiving-interface-usage."; case learn-and-translate { description "In case this is not in conflict with static MAC address configuration, then the (source) MAC address will be learned on the port or interface where the frame is received, and the system will perform (source) MAC address translation before forwarding the frame."; reference "TR-101i2: Migration to Ethernet-Based DSL Aggregation R-111"; } // case learn-and-translate case learn-but-do-not-move { description "In case the source MAC address is not known in the forwarding database on any other port or interface, and in case a possible learning is not in conflict with any static MAC address configuration then it is learned on the port or interface on which the frame is received (in case other criteria such as specified by the leaf max-number-mac-addresses allow). In case the MAC address was already known in the forwarding database, where it was associated to a port or interface, and a possible learning is not in conflict with any static MAC address configuration then MAC movement is restricted: the MAC address can not move and the frame will be discarded in case the interface usage of the port or interface where the frame is received is part of the leaf-list mac-can-not-move-to of the list entry identified by the interface usage of the port or interface where the MAC address was already associated to. The MAC address can move in case the interface usage of the port or interface where the frame is received is not part of this list."; reference "TR-101i2: Migration to Ethernet-Based DSL Aggregation R-112 and R-113"; leaf-list mac-can-not-move-to { type bbf-if-usg:interface-usage; description "Provides a list of interface-usage values to which MAC addresses can not move."; } } // case learn-but-do-not-move } // choice mac-learning-action } // list mac-learning-rule } // list mac-learning-control-profile } // container mac-learning-control-profiles } // container forwarding container forwarding-state { config false; description "State data nodes associated with layer 2 forwarding."; container forwarders { description "A forwarder is used to forward traffic between interfaces."; list forwarder { key "name"; description "A list of forwarders."; leaf name { type bbf-yang:string-ascii64; description "The name of the forwarder."; } container ports { description "Configuration for ports associated with this forwarder."; list port { key "name"; description "The list of ports associated with this forwarder."; leaf name { type bbf-yang:string-ascii64; description "The name of the forwarder port."; } leaf sub-interface { type if:interface-state-ref; must "derived-from-or-self(/if:interfaces-state/if:interface[if:name = current()]/if:type,'bbfift:vlan-sub-interface' ) or derived-from-or-self( /if:interfaces-state/if:interface[if:name = current()]/if:type,'bbfift:l2-termination')" { description "The type of interface being referenced must be a VLAN sub-interface or a Layer 2 termination."; } description "The VLAN sub-interface or Layer 2 termination associated with this port."; } } // list port } // container ports container forwarding-databases { if-feature forwarding-databases; description "Forwarder state data nodes for forwarding databases."; leaf forwarding-database { type leafref { path "/bbf-l2-fwd:forwarding-state/bbf-l2-fwd:forwarding-databases/bbf-l2-fwd:forwarding-database/bbf-l2-fwd:name"; } description "A reference to a forwarding database associated with a forwarder."; } } // container forwarding-databases } // list forwarder } // container forwarders container forwarding-databases { if-feature forwarding-databases; description "The following data nodes allow to read out the forwarding database (FDB), i.e. the MAC addresses being learned within the system. The strategy is to offer the same flexibility as in IEEE: - Allows at one extreme that each VLAN has its own FDB, this allows the same MAC address to be learned independently within different VLANs. - Allows at the other extreme that the system has one FDB shared by all VLANs, this allows the same MAC address to be learned only once over all VLANs. - Allows everything in between, i.e. an FDB for a set of VLANs, a 2nd FDB for another set. To support this concept it is possible to have multiple forwarders assigned to a single FDB."; leaf max-number-mac-addresses { if-feature read-system-fdb-capacity; type uint32; description "Provides the system's capacity for forwarding databases, i.e. the total number of entries for all forwarding databases together."; } list forwarding-database { key "name"; description "The state data of a specific forwarding database."; leaf name { type bbf-yang:string-ascii64; description "The name of the forwarding database."; } container mac-addresses { description "MAC address data in the forwarding database state."; list mac-address { key "mac-address"; description "The list of MAC addresses that are stored in the forwarding database."; leaf mac-address { type yang:mac-address; description "A specific MAC address that is stored in the forwarding database."; } choice learned-on { description "In case of a shared forwarding database the MAC address is stored on an 'Ethernet-like' interface In case of a not-shared forwarding database the MAC address is stored on a forwarder port of the single forwarder that uses the forwarding database."; case forwarder-port { description "Forwarder port identification."; leaf forwarder { type forwarder-state-ref; description "This leaf references a forwarder."; } leaf port { type leafref { path "/bbf-l2-fwd:forwarding-state/bbf-l2-fwd:forwarders/bbf-l2-fwd:forwarder[bbf-l2-fwd:name = current()/../forwarder]/bbf-l2-fwd:ports/bbf-l2-fwd:port/bbf-l2-fwd:name"; } description "This leaf references a port within the forwarder identified by the leaf 'forwarder'."; } } // case forwarder-port } // choice learned-on } // list mac-address } // container mac-addresses } // list forwarding-database } // container forwarding-databases } // container forwarding-state } // module bbf-l2-forwarding
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