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yang: support VLAN subinterfaces for BGP unnumbered #28095

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001c819
yang: add IPv6 link-local mode to VLAN subinterfaces
sudharr86 Jun 25, 2026
bfe9658
yang: allow VLAN subinterfaces as BGP neighbors
sudharr86 Jun 25, 2026
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7 changes: 7 additions & 0 deletions src/sonic-yang-models/tests/yang_model_tests/tests/vlan_sub_interface.json
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,13 @@
"eStrKey" : "Pattern",
"eStr": ["drop|forward"]
},
"VLAN_SUB_INTERFACE_ENABLE_IPV6_LINK_LOCAL": {
"desc": "Enable the ipv6 link-local."
},
"VLAN_SUB_INTERFACE_INVALID_ENABLE_IPV6_LINK_LOCAL": {
"desc": "Enable the ipv6 link-local as true.",
"eStr": "Invalid value \"true\" in \"ipv6_use_link_local_only\" element."
},
"VLAN_SUB_INTERFACE_SHORT_NAME_FORMAT_VLAN_CHECK_MUST_CONDITION_FALSE_TEST": {
"desc": "Configure valid short name format vlan sub interface vlan must check condition false.",
"eStrKey": "Must"
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54 changes: 54 additions & 0 deletions src/sonic-yang-models/tests/yang_model_tests/tests_config/vlan_sub_interface.json
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Expand Up @@ -538,6 +538,60 @@
}
}
},
"VLAN_SUB_INTERFACE_ENABLE_IPV6_LINK_LOCAL": {
"sonic-vlan-sub-interface:sonic-vlan-sub-interface": {
"sonic-vlan-sub-interface:VLAN_SUB_INTERFACE": {
"VLAN_SUB_INTERFACE_LIST": [
{
"name": "Ethernet8.10",
"ipv6_use_link_local_only": "enable"
}
]
}
},
"sonic-port:sonic-port": {
"sonic-port:PORT": {
"PORT_LIST": [
{
"name": "Ethernet8",
"admin_status": "up",
"alias": "Ethernet8/1",
"description": "Ethernet8",
"lanes": "45,46,47,48",
"mtu": 9000,
"speed": 100000
}
]
}
}
},
"VLAN_SUB_INTERFACE_INVALID_ENABLE_IPV6_LINK_LOCAL": {
"sonic-vlan-sub-interface:sonic-vlan-sub-interface": {
"sonic-vlan-sub-interface:VLAN_SUB_INTERFACE": {
"VLAN_SUB_INTERFACE_LIST": [
{
"name": "Ethernet8.10",
"ipv6_use_link_local_only": "true"
}
]
}
},
"sonic-port:sonic-port": {
"sonic-port:PORT": {
"PORT_LIST": [
{
"name": "Ethernet8",
"admin_status": "up",
"alias": "Ethernet8/1",
"description": "Ethernet8",
"lanes": "45,46,47,48",
"mtu": 9000,
"speed": 100000
}
]
}
}
},
"VLAN_SUB_INTERFACE_SHORT_NAME_FORMAT_VLAN_CHECK_MUST_CONDITION_FALSE_TEST": {
"sonic-vlan-sub-interface:sonic-vlan-sub-interface": {
"sonic-vlan-sub-interface:VLAN_SUB_INTERFACE": {
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7 changes: 7 additions & 0 deletions src/sonic-yang-models/yang-models/sonic-bgp-neighbor.yang
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Expand Up @@ -19,6 +19,10 @@ module sonic-bgp-neighbor {
prefix lag;
}

import sonic-vlan-sub-interface {
prefix vlan-sub-interface;
}

// Comment sonic-vlan import here until libyang back-links issue is resolved for VLAN leaf reference.
//import sonic-vlan {
// prefix vlan;
Expand Down Expand Up @@ -94,6 +98,9 @@ module sonic-bgp-neighbor {
type string {
pattern 'Vlan([0-9]{1,3}|[1-3][0-9]{3}|[4][0][0-8][0-9]|[4][0][9][0-4])';
}
type leafref {
path "/vlan-sub-interface:sonic-vlan-sub-interface/vlan-sub-interface:VLAN_SUB_INTERFACE/vlan-sub-interface:VLAN_SUB_INTERFACE_LIST/vlan-sub-interface:name";
}
}
description "BGP Neighbor, it will be neighbor address or interface name";
}
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10 changes: 10 additions & 0 deletions src/sonic-yang-models/yang-models/sonic-vlan-sub-interface.yang
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Expand Up @@ -36,6 +36,10 @@ module sonic-vlan-sub-interface {
description "Initial version";
}

revision 2025-12-23 {
description "Add leaf ipv6_use_link_local_only";
}

container sonic-vlan-sub-interface {
container VLAN_SUB_INTERFACE {

Expand Down Expand Up @@ -103,6 +107,12 @@ module sonic-vlan-sub-interface {
range 1..4094;
}
}

leaf ipv6_use_link_local_only {
description "Enable/Disable IPv6 link local address on vlan-sub-interface";
type stypes:mode-status;
default disable;
}
}

list VLAN_SUB_INTERFACE_IPPREFIX_LIST {
Expand Down
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