Overview

The IOS-XE configuration is divided into the following sections:

• entity: Different entities that can be configured in the data model, such as devices, device groups, etc.
• device: Device level configuration, such as VLANs, VRFs, routing protocols, etc.
• interface: Interface level configuration, such as IP addresses, VLANs, etc.

Defect ID: CSCws49182

Affected IOS-XE Version: 17.15.1

Issue: When configuring table_maps with explicit default: copy, IOS-XE triggers a DMI (Device Management Interface) synchronization issue that can cause idempotency problems and unintended deletion of certain configuration attributes (such as ip domain lookup nsap). This results in persistent idempotency issues where the configuration must be reapplied on every run.

Workaround: Omit the default field from table_maps configuration. Since the YANG model default value for table-map default is already copy, explicitly specifying it is unnecessary and triggers the DMI sync bug.

Example - Problematic Configuration:

iosxe_system:
  table_maps:
    - name: TABLE-MAP-1
      default: copy  # ← Triggers DMI sync bug
      mappings:
        - from: 18
          to: 18

Status: This is an IOS-XE platform defect. A fix will be available in a future IOS-XE release. Until then, use the workaround above.

Defect ID: CSCwt04022

Affected IOS-XE Version: 17.15

Issue: When configuring logging with both buffered_severity and persistent attributes (persistent_url, persistent_size, persistent_filesize) via RESTCONF PUT operations, IOS-XE fails to persist the buffered_severity value to the RESTCONF operational database. The configuration applies correctly to the running-config (visible via CLI), but RESTCONF GET operations return incomplete data with buffered_severity missing. This creates a discrepancy between CLI and RESTCONF database, causing Terraform idempotency failures where configuration drift is detected on every subsequent apply.

Example - Problematic Configuration:

iosxe_logging:
  buffered_size: 16384
  buffered_severity: debugging
  persistent_url: bootflash:/logs        # ← Triggers RESTCONF sync bug
  persistent_size: 1500000               # ← Triggers RESTCONF sync bug
  persistent_filesize: 750000            # ← Triggers RESTCONF sync bug

Example - Working Configuration:

iosxe_logging:
  buffered_size: 16384
  buffered_severity: debugging           # ← Persists correctly
  # persistent attributes omitted as workaround
  monitor_severity: debugging
  console_severity: errors
  count: true                            # ← All other attributes work correctly
  rate_limit_all: 180

CLI Verification:

Switch#show running-config | include buffered
logging buffered 16384 debugging

! RESTCONF GET shows incomplete data (severity missing):
! GET /restconf/data/Cisco-IOS-XE-native:native/logging/buffered-config
! Returns: {"size-value": 16384}  ← severity-level missing

Status: This is an IOS-XE RESTCONF platform defect. A fix will be available in a future IOS-XE release.

The Data Model describes how to create resources but not what functional purpose they serve within the IOS-XE configuration. For more information about IOS-XE please visit the documentation.