Description

This article describes the issue of the Unknown TLV type 201 log message being generated.

Symptoms

The following log messages were noticed: 

Jun 14 16:33:55 fw343c /kernel: fab0: Unknown TLV type 201
Jun 14 16:33:55 fw343c /kernel: fab1: Unknown TLV type 201
Jun 14 16:33:55 fw343c /kernel: reth0: Unknown TLV type 201
Jun 14 16:33:55 fw343c /kernel: reth1: Unknown TLV type 201
The above mentioned logs are the output of the messages file with the following setting: 
set system syslog file messages any any



Solution

  • The above mentioned logs are the output that is generated, when the DCD (Device Control Daemon) tries to configure interfaces, which could occur during the device boot up (for example, secondary or primary node booting up) or mastership transitions.
  • As this function is not supported on AE interfaces (such as redundant (reth) interfaces, fabric interfaces, and so on), the above messages are generated.

 These logs in the messages file can be ignored, as they are not relevant to the redundant (reth) or fabric (fab) interfaces. They can also be filtered from the messages file with the following configuration:

set system syslog file messages any any
set system syslog file messages match "!TLV"
This configuration will exclude all messages, including the TLV string from the messages log.