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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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Error-cause Values

It is possible that a Dynamic Authorization Server cannot honor Disconnect Message request or CoA request packets for some reason.

The Error-Cause Attribute provides more detail on the cause of the problem. It may be included within CoA-Nak and Disconnect-Nak packets.

The following table describes various error causes for the CoA and DM requests:

Table 1. Error-cause ValuesError-cause Values
Serial Number Error-cause Scenarios
1 Unsupported Attributes(401)
  • CoA or DM request containing one or more unsupported attributes.
  • DM requests containing attributes other than NAS/Session identification attributes.
2 Invalid Attribute Value(407)
  • CoA or DM request containing the incorrect NAS-Port, calling-station-id, and Vendor-Specific attribute values.
3 NAS Identification Mismatch(403)
  • CoA request containing NAS-IP-Address or NAS-IPV6-Address that does not match NAS.
4 Administratively Prohibited(501)
  • NAS is configured to ignore the CoA or DM request. Also, dot1x is not configured on the NAS-Port.
5 Session Context Not Found(503)
  • CoA or DM request containing session identification attributes that does not match any of the NAS user sessions.
6 Resource Unavailable(506)
  • Internal CoA or DM message processing errors.
7 Missing Attribute(402)
  • CoA or DM request without Vendor-specific attribute or invalid Vendor-specific attribute.
  • CoA with re-authenticate or terminate request not containing calling-station-id or NAS-Port attribute.
  • CoA with disable-port or bounce-port request not containing NAS-Port attribute.
  • DM request not containing user-name attribute.

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