Getting Data In

_TCP_ROUTING for windows monitored data is not routed appropriately in Splunk Version 6

rbal_splunk
Splunk Employee
Splunk Employee

After upgrading SplunkUniversalForwader from Version 5.x to 6.x, now _TCP_ROUTING for windows monitored data is not routed appropriately.
For example:

1)Inputs.conf are

[WinEventLog://Application]

_TCP_ROUTING = unix

[WinEventLog://Security]

[WinEventLog://System]

_TCP_ROUTING = unix

[monitor://C:/Important/unix.log]

_TCP_ROUTING = unix


ii)Outputs.conf

[tcpout]
defaultGroup = win

[tcpout:win]
server = testserver1:9997

[tcpout:unix]
server = testserver2:24003


Data for following sources should have routed to group ‘unix’, but got routed to tcpout:win

[WinEventLog://Application]
[WinEventLog://System]

Only [monitor://C:/Important/unix.log] got routed to _TCP_ROUTING = unix, other windows event data is routed to defaultGroup = win

Tags (2)

rbal_splunk
Splunk Employee
Splunk Employee

The behavior explained above has been identified as Bug (SPL-79009) and is expected to fixed in 6.0.3.
In 6.0, WinEventLog is changed to modular input, while in 5.0 it's a splunkd input processor. Issue is _TCP_ROUTING is not supported by modular input. Therefore, to work around this issue.
The proposed workaround is to set default receiver as the one for modular input, i.e., set the outputs.conf as:
[tcpout]
defaultGroup = unix

[tcpout:win]
server = 192.168.0.107:9997

[tcpout:unix]
server = 10.160.31.12:24003
and set inputs.conf as:
[default]
_TCP_ROUTING = win

[WinEventLog://Application]
checkpointInterval = 5
current_only = 0

[WinEventLog://Security]
checkpointInterval = 5
current_only = 0

[WinEventLog://System]
disabled = 0

[monitor://C:\Important\unix.log]
_TCP_ROUTING = unix
host = RBAL_UF
index = default
sourcetype = unix

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Make Your Machine Data AI-Ready in Splunk

Every team is getting ready for AI agents.   Thursday, November 12, 2026  |  11AM  PST / 2PM EST   ...

Splunk Asynchronous Forwarding Explained

Splunk asynchronous forwarding is often misunderstood as simply setting autoLBVolume. That is not quite right. ...

How to Monitor AI Agents with Splunk Agent Observability

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...