isis_node_sid_forward - openconfig/featureprofiles GitHub Wiki
MPLS-SR transit forwarding to Node-SID distributed over ISIS
graph LR;
A[ATE PORT1] <-- IPv4-IPv6 --> B[DUT PORT1];
C[ATE:PORT2] <-- IPv4-IPv6 --> D[DUT PORT2];
E[ATE:PORT3] <-- IPv4-IPv6 --> F[DUT PORT3];
G[ATE:PORT4] <-- IPv4-IPv6 --> H[DUT PORT4];
-
Configure Segment Routing Global Block (srgb) lower-bound: 400000 upper-bound: 465001)
-
Enable Segment Routing for the ISIS
-
Enable MPLS forwarding.
-
Prefix (1) with node-SID is advertised by the direct ISIS neighbor
-
Prefix (2) with node-SID is advertised by simulated indirect ISIS speaker
-
ATE port1 - used for Traffic source
-
ATE port2-port4 - used for verification of per-interface sid or per-node sid
This section should contain a JSON formatted stanza representing the canonical OC to configure MPLS SR-ID (See the README Template)
{
"openconfig-network-instance:network-instances": {
"network-instance": [
{
"config": {
"name": "DEFAULT",
"type": "openconfig-network-instance-types:DEFAULT_INSTANCE"
},
"mpls": {
"global": {
"reserved-label-blocks": {
"reserved-label-block": [
{
"config": {
"local-id": "srlb",
"lower-bound": 16
},
"local-id": "srlb"
},
{
"config": {
"local-id": "isis-sr",
"lower-bound": 400000,
"upper-bound": 465000
},
"local-id": "isis-sr"
}
]
}
}
},
"name": "DEFAULT",
"protocols": {
"protocol": [
{
"identifier": "openconfig-policy-types:ISIS",
"name": "isis",
"config": {
"identifier": "openconfig-policy-types:ISIS",
"name": "isis"
},
"isis": {
"global": {
"segment-routing": {
"config": {
"enabled": true,
"srgb": "isis-sr",
"srlb": "srlb"
}
}
}
}
}
]
},
"segment-routing": {
"srgbs": {
"srgb": [
{
"config": {
"dataplane-type": "MPLS",
"local-id": "isis-sr",
"mpls-label-blocks": [
"isis-sr"
]
},
"local-id": "isis-sr"
}
]
},
"srlbs": {
"srlb": [
{
"config": {
"dataplane-type": "MPLS",
"local-id": "srlb",
"mpls-label-block": "srlb"
},
"local-id": "srlb"
}
]
}
}
}
]
}
}
On DUT1 configure:
- ISIS adjacency between ATE & DUT for all the ports ATE1, ATE2, ATE3, ATE4; DUT1, DUT2, DUT3, DUT4.
- Enable MPLS-SR for ISIS (
/network-instances/network-instance/protocols/protocol/isis/global/segment-routing/config/enabled) for each interface - reserved-label-block (lower-bound: 1000000 upper-bound: 1048576)
- Segment Routing Global Block (srgb) with lower-bound: 400000 upper-bound: 465001
- Segment Routing Local Block (srlb) with lower-bound: 40000 upper-bound: 41000)
- Send traffic from Source to destination and make sure the interface sid counters are populated
Generate traffic:
- Send labeled traffic transiting through the DUT matching direct prefix (1). Verify that ATE2 receives traffic with node-SID label popped.
- Send labeled traffic transiting through the DUT matching indirect prefix (2). Verify that ATE2 receives traffic with the node-SID label intact.
- Verify that corresponding SID forwarding counters are incremented.
- Traffic arrives without packet loss.
Verify:
- Defined blocks are configured on DUT1.
- DUT1 advertises its SRGB and SRLB to ATE1.
- Verify the Interface SID counters
paths:
# srgb definition
/network-instances/network-instance/mpls/global/interface-attributes/interface/config/mpls-enabled:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/config/local-id:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/config/lower-bound:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/config/upper-bound:
# sr config
/network-instances/network-instance/segment-routing/srgbs/srgb/config/local-id:
/network-instances/network-instance/segment-routing/srgbs/srgb/config/mpls-label-blocks:
/network-instances/network-instance/segment-routing/srlbs/srlb/local-id:
/network-instances/network-instance/segment-routing/srlbs/srlb/config/mpls-label-block:
/network-instances/network-instance/protocols/protocol/isis/global/segment-routing/config/enabled:
/network-instances/network-instance/protocols/protocol/isis/global/segment-routing/config/srgb:
/network-instances/network-instance/protocols/protocol/isis/global/segment-routing/config/srlb:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/interfaces/interface/config/interface-id:
# telemetry
/network-instances/network-instance/protocols/protocol/isis/global/segment-routing/state/enabled:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/aggregate-sid-counters/aggregate-sid-counter/state/in-pkts:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/aggregate-sid-counters/aggregate-sid-counter/state/out-pkts:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/state/local-id:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/state/lower-bound:
/network-instances/network-instance/mpls/global/reserved-label-blocks/reserved-label-block/state/upper-bound:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/interfaces/interface/state/interface-id:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/interfaces/interface/sid-counters/sid-counter/state/in-pkts:
/network-instances/network-instance/mpls/signaling-protocols/segment-routing/interfaces/interface/sid-counters/sid-counter/state/out-pkts:
rpcs:
gnmi:
gNMI.Set:
union_replace: true
replace: true
gNMI.Subscribe:
on_change: true- FFF