Troubleshoot StarOS DNS Client Errors

Available Languages

Download Options

PDF (72.5 KB)
View with Adobe Reader on a variety of devices
ePub (79.4 KB)
View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone
Mobi (Kindle) (64.1 KB)
View on Kindle device or Kindle app on multiple devices

Updated:November 26, 2020

Document ID:216503

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Introduction

Problem

Sample DNS Client related Syslog messages from StarOS

Solution

Related Information

Introduction

This document describes the details of the Domain Name System (DNS) failure codes that are printed in the Syslogs when the DNS-Client feature is enabled on StarOS.

Problem

StarOS DNS Client prints Syslog messages with fail-reason codes when it encounters issues with the DNS queries. These Syslog messages mostly contain response error-codes. Understanding these error-codes can help you troubleshoot the DNS issues.

Sample DNS Client related Syslog messages from StarOS

Here are a few sample Syslog messages that show various fail-reason codes.

[diameter-dns 92604 error] [3/1/44451 <diamproxy:20> er_dns_client.c:2938] [software internal security system syslog] Diameter DNS : response received with failreason : 4. Query : servername.dcca.example.com

[diameter-dns 92604 error] [3/1/44451 <diamproxy:49> er_dns_client.c:2938] [software internal security system syslog] Diameter DNS : response received with failreason : 11. Query : servername.dcca.example.com

[diameter-dns 92604 error] [3/1/44451 <diamproxy:31> er_dns_client.c:2938] [software internal security system syslog] Diameter DNS : response received with failreason : 12. Query : servername.dcca.example.com

Solution

This table provides an explanation of the fail-reason code that can be used to narrow down the problem and troubleshoot the issue further. Usually, the Syslog message states whether the failure is related to a message received or an internal issue with the DNS Client.

Fail-Reason Code	Details
1	No relevant answer for the record type
2	Unable to interpret the request. Format Error
3	Server internal failure
4	DNS record does not exist
5	Opcode not supported
6	Server refused to perform the operation
11	Connection Refused
12	DNS query timed out
128	DNS query depth exceeded