# Cisco Nexus switch command for multicast

**URL:** <https://forum.networklessons.com/t/cisco-nexus-switch-command-for-multicast/14100>\
**Category:** Switching\
**Created:** [April 12, 2021, 3:14pm UTC](https://forum.networklessons.com/t/cisco-nexus-switch-command-for-multicast/14100 "2021-04-12T15:14:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ncc99999](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/n/c4cdca/32.png) [@ncc99999](https://forum.networklessons.com/u/ncc99999)\
**Post date:** [April 12, 2021, 3:14pm UTC](https://forum.networklessons.com/t/cisco-nexus-switch-command-for-multicast/14100/1 "2021-04-12T15:14:38Z")

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Hi guys,

What is Cisco Nexus command to see the multicast UDP port assignment?

I normally use ‘sh ip mroute det’ to see the multicast ip mapping but this command doesn’t show multicast port assiged for the specific address.

Thanks

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**Author:** ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)\
**Post date:** [April 14, 2021, 5:24am UTC](https://forum.networklessons.com/t/cisco-nexus-switch-command-for-multicast/14100/2 "2021-04-14T05:24:34Z")

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Hello Tom

I am not as familiar with the Nexus series of Cisco devices, however, after doing some research, I have found that you are also able to capture and store IP multicast headers, and view them. Within these headers, you can also see the UDP port numbers being used. Take a look at the following Cisco documentation:

> **[Monitoring and Maintaining IP Multicast  \[Networking Software (IOS &...](https://www.cisco.com/en/US/docs/ios/ipmulti/configuration/guide/imc_monitor_maint.html#wp1071497)**

I hope this has been helpful!

Laz

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**Author:** ![ncc99999](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/n/c4cdca/32.png) [@ncc99999](https://forum.networklessons.com/u/ncc99999)\
**Post date:** [April 14, 2021, 1:49pm UTC](https://forum.networklessons.com/t/cisco-nexus-switch-command-for-multicast/14100/3 "2021-04-14T13:49:04Z")

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Thanks. I’ll give it a try.