# Use specific NIC for output

**URL:** <https://discuss.elastic.co/t/use-specific-nic-for-output/246906>\
**Category:** Logstash\
**Created:** [August 31, 2020, 4:48am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906 "2020-08-31T04:48:59Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![gunlomboy](https://avatars.discourse-cdn.com/v4/letter/g/c0e974/32.png) [@gunlomboy](https://discuss.elastic.co/u/gunlomboy)\
**Post date:** [August 31, 2020, 4:48am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/1 "2020-08-31T04:48:59Z")

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Hi,

I'm a complete Logstash newbie, so hopefully this isn't a difficult question to answer.

I have 3 NICs on my Logstash servers. I will use one to receive inputs, one for management and one for outputs. I am unable to find a configuration setting anywhere to set a specific NIC for outputs.

Can this be configured either for all pipelines, specific pipelines or specific output modules?

Many thanks.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 31, 2020, 4:50am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/2 "2020-08-31T04:50:40Z")

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Welcome to our community! 😃

This is not something you can do with Logstash. What is the core problem are you trying to solve?

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<div class="post-metadata">

**Author:** ![gunlomboy](https://avatars.discourse-cdn.com/v4/letter/g/c0e974/32.png) [@gunlomboy](https://discuss.elastic.co/u/gunlomboy)\
**Post date:** [August 31, 2020, 4:56am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/3 "2020-08-31T04:56:07Z")

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Hi. I want to separate traffic on each NIC.

We currently see bottlenecks around the ingest on a single NIC.

Our volumes EPS volumes are very high, so we want to gather some metrics using one NIC for input and one for outputs.

I guess I could use routing, but thought this would be core functionality that I wasn't able to find.

Thanks.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [August 31, 2020, 4:56am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/4 "2020-08-31T04:56:47Z")

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Routing is definitely the right place to be doing this.

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<div class="post-metadata">

**Author:** ![gunlomboy](https://avatars.discourse-cdn.com/v4/letter/g/c0e974/32.png) [@gunlomboy](https://discuss.elastic.co/u/gunlomboy)\
**Post date:** [August 31, 2020, 4:58am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/5 "2020-08-31T04:58:18Z")

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Excellent. Thanks for your super-fast response. 🙂

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 28, 2020, 4:58am UTC](https://discuss.elastic.co/t/use-specific-nic-for-output/246906/6 "2020-09-28T04:58:31Z")

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