Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

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Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

Troubleshoot Multi-Site and Multi-Pod Error:400

Updated: April 17, 2026

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Configure fabric external connectivity for spines to resolve Error:400 invalid configuration following intersite spines not configured as Mpod spines.

Resolve the Error:400 invalid configuration that occurs when intersite spines are not configured as Mpod spines in Multi-Site and Multi-Pod deployments.

This troubleshooting task applies to Multi-Site and Multi-Pod configurations where you encounter the following error:

Error:400 - Invalid Configuration Following Intersite Spines are not configured as Mpod Spines: 1202

You must enable the fabric external connectivity for all the existing spines and if you are trying to add new spines use the Setup Multipod GUI wizard.

Before you begin

Access to the APIC GUI with appropriate administrative privileges.

Follow these steps to resolve this configuration issue:

Procedure

  1. Choose one of the following resolution methods based on your scenario.

    • Enable all existing spines under the external routed network
    • Add new spines under the external routed network

  2. If enabling all existing spines, navigate to Tenant > infra in the APIC GUI menu bar.

  3. In the Navigation pane, expand Networking > External Routed Networks, right-click on the external routed network and choose Enable Fabric External Connectivity.

  4. If adding new spines, click Fabric in the APIC GUI menu bar.

  5. In the Navigation pane, expand Quick Start > Node or Pod Setup > Setup Multipod and complete the Multipod setup.

The Error:400 invalid configuration issue is resolved and the intersite spines are properly configured as Mpod spines for Multi-Site and Multi-Pod operation.