Contents

Introduction

Background Information

Example 1. duplicate-subnets-within-ctx

Example 2. dhcp-policy-not-present

Introduction

This document describes the steps for remediation of ACI fault F0469.

Background Information

Fault:

F0469: fltFvBDConfigIssuesConfig-failed

Explanation:

This fault occurs when there are one or more duplicate Subnets defined for Bridge Domain (BDs) or/and AEpGs associated with the Ctx.

Recommended Action:

If you see this fault, take these actions:

- For duplicate-subnets-within-ctx issue: Find the Ctx that this BD is associated with and find all other BDs associated with the Ctx, find all the AEpGs associated with BDs found in the previous step, and verify that there are no single subnets configured for AEpGs and BDs associated with Ctx.

- For the dhcp-policy-not-present issue: Check the configuration and ensure that the DHCP Pelay Profile consumed by BD is defined in Tenant.

If this action does not resolve the issue, create a tech-support file and contact Cisco TAC.

Example 1. duplicate-subnets-within-ctx

moquery -c faultInst -f 'fault.Inst.code=="F0469"'

# fault.Inst

code : F0469

ack : no

annotation :

cause : configuration-failed

changeSet : configQual:duplicate-subnets-within-ctx, configSt:failed-to-apply, debugMessage:uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_7eef8519-0731-43bd-9e3b-849c266dc83b ,uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_950fc40b-be9a-4663-abdd-79e279aaca26

childAction :

created : 2021-02-26T08:17:51.577+00:00

delegated : yes

descr : BD Configuration failed for uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_7eef8519-0731-43bd-9e3b-849c266dc83b due to duplicate-subnets-within-ctx: uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_7eef8519-0731-43bd-9e3b-849c266dc83b ,uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_950fc40b-be9a-4663-abdd-79e279aaca26

dn : topology/pod-1/node-112/local/svc-policyelem-id-0/uni/bd-[uni/tn-prj_e34f5d661fdc40829879720415a3dab5/BD-net_7eef8519-0731-43bd-9e3b-849c266dc83b]-isSvc-no/bdcfgissues/fault-F0469

domain : tenant

extMngdBy : undefined

highestSeverity : minor

lastTransition : 2021-02-26T08:20:11.597+00:00

lc : raised

modTs : never

occur : 1

origSeverity : minor

prevSeverity : minor

rn : fault-F0469

rule : fv-bdconfig-issues-config-failed

severity : minor

status :

subject : management

type : config

uid :

Get the BD information and the associated subnet.

apic# moquery -c fvSubnet

apic# moquery -c fvBD

Check the subnets deployed in order to track any overlap within the same Virtual Routing and Forwarding (VRF) (Ctx) for a different BD.

moquery -c fvSubnet | grep ^dn

Fix:

Correct the subnet overlap.

Example 2. dhcp-policy-not-present

Site1-apic1# moquery -c faultInst -f 'fault.Inst.code=="F0469"'

Total Objects shown: 2

# fault.Inst

code : F0469

ack : no

alert : no

annotation :

cause : configuration-failed

changeSet : configQual (New: dhcp-policy-not-present), configSt (New: failed-to-apply)

childAction :

created : 2024-01-23T13:43:08.484-05:00

delegated : yes

descr : BD Configuration failed for uni/tn-abc3/BD-BD1 due to dhcp-policy-not-present:

dn : topology/pod-1/node-101/local/svc-policyelem-id-0/uni/bd-[uni/tn-abc3/BD-BD1]-isSvc-no/bdcfgissues/fault-F0469

domain : tenant

extMngdBy : undefined

highestSeverity : minor

lastTransition : 2024-01-23T13:45:53.575-05:00

lc : raised

modTs : never

occur : 1

origSeverity : minor

prevSeverity : minor

rn : fault-F0469

rule : fv-bdconfig-issues-config-failed

severity : minor

status :

subject : management

title :

type : config

uid :

userdom : all

Check the DHCP label deployed for the BD in question.

Site1-apic1# moquery -c dhcpLbl

# dhcp.Lbl

name : test1

annotation :

childAction :

descr :

dn : uni/tn-abc3/BD-BD1/dhcplbl-test1

extMngdBy :

lcOwn : local

modTs : 2024-01-23T13:46:03.163-05:00

monPolDn : uni/tn-common/monepg-default

nameAlias :

owner : tenant

ownerKey :

ownerTag :

rn : dhcplbl-test1

status :

tag : yellow-green

uid : 15374

userdom : :all:

Check if the relay policy exists, in this case, it is the test1 dhcp relay policy. In the next output, you can see that the test1 dhcp relay policy does not exist, hence, the error is seen.

Site1-apic1# moquery -c dhcpRelayP | grep dn

dn : uni/tn-pk/relayp-PK-Global-DHCP-Relay-Policy

dn : uni/infra/relayp-default

Fix:

Remove the DHCP label that does not have a corresponding policy tied to it.