Segment Routing TE

Configure Segment Routing Traffic Engineering (SR-TE) on IOS-XR devices including PCEP (Path Computation Element Protocol) settings and PCE peers. This feature enables advanced traffic engineering capabilities using segment routing with both SR-MPLS and SRv6 data planes.

Diagram

Classes

configuration (iosxr.devices)

Name	Type	Constraint	Mandatory	Default Value
segment_routing_te	Class	`[segment_routing_te]`	No

segment_routing_te (iosxr.devices.configuration)

Name	Type	Constraint	Mandatory
logging_pcep_peer_status	Boolean	`true`, `false`	No
logging_policy_status	Boolean	`true`, `false`	No
pcc_dead_timer	Integer	min: `1`, max: `255`	No
pcc_delegation_timeout	Integer	min: `0`, max: `1576800000`	No
pcc_initiated_orphan	Integer	min: `0`, max: `180`	No
pcc_initiated_state	Integer	min: `0`, max: `86400`	No
pcc_report_all	Boolean	`true`, `false`	No
pcc_source_address_ipv4	IP		No
pce_peers_ipv4	List	`[pce_peers_ipv4]`	No

pce_peers_ipv4 (iosxr.devices.configuration.segment_routing_te)

Name	Type	Constraint	Mandatory	Default Value
pce_address	IP		Yes
precedence	Integer	min: `0`, max: `255`	No

Sample Configuration:

The following configuration describes how to set up Segment Routing Traffic Engineering on a Cisco IOS-XR device.

segment-routing
 traffic-engineering
  logging
   pcep peer-status
   policy status
  pcc
   source-address <ip-address>
   delegation-timeout <seconds>
   dead-timer <seconds>
   initiated-state <seconds>
   initiated-orphan <seconds>
   report-all
  pce address <pce-ip> precedence <value>

Example YAML Code:

Example-1: Basic PCEP configuration with single PCE peer

iosxr:
  devices:
    - name: router-1
      host: 10.10.10.1:57400
      configuration:
        segment_routing_te:
          logging_pcep_peer_status: true
          logging_policy_status: true
          pcc_source_address_ipv4: "10.1.1.1"
          pce_peers_ipv4:
            - pce_address: "10.1.1.100"
              precedence: 100

Example-2: Comprehensive SR-TE configuration with PCC settings

iosxr:
  devices:
    - name: router-1
      host: 10.10.10.1:57400
      configuration:
        segment_routing_te:
          logging_pcep_peer_status: true
          logging_policy_status: true
          pcc_report_all: true
          pcc_source_address_ipv4: "88.88.88.8"
          pcc_delegation_timeout: 10
          pcc_dead_timer: 60
          pcc_initiated_state: 15
          pcc_initiated_orphan: 10
          pce_peers_ipv4:
            - pce_address: "66.66.66.6"
              precedence: 122

Example-3: Multiple PCE peers with redundancy

iosxr:
  devices:
    - name: router-1
      host: 10.10.10.1:57400
      configuration:
        segment_routing_te:
          logging_pcep_peer_status: true
          pcc_source_address_ipv4: "10.1.1.1"
          pcc_dead_timer: 120
          pce_peers_ipv4:
            - pce_address: "10.1.1.100"
              precedence: 200
            - pce_address: "10.1.1.101"
              precedence: 100

Example-4: Minimal SR-TE configuration

iosxr:
  devices:
    - name: router-1
      host: 10.10.10.1:57400
      configuration:
        segment_routing_te:
          pcc_source_address_ipv4: "10.1.1.1"

Use Cases:

PCE Integration: Centralized path computation for network-wide optimization
PCEP Configuration: Configure Path Computation Element Protocol settings
Traffic Engineering Foundation: Base configuration for SR-TE capabilities
Redundant PCE Setup: Configure multiple PCE peers for high availability