# Cross-host Multicasting on rancher

**URL:** <https://forums.suse.com/t/cross-host-multicasting-on-rancher/649>\
**Category:** Rancher 1.x\
**Created:** [October 7, 2015, 7:31pm UTC](https://forums.suse.com/t/cross-host-multicasting-on-rancher/649 "2015-10-07T19:31:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nhumrich](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/nhumrich/32/344_2.png) [@nhumrich](https://forums.suse.com/u/nhumrich)\
**Post date:** [October 7, 2015, 7:31pm UTC](https://forums.suse.com/t/cross-host-multicasting-on-rancher/649/1 "2015-10-07T19:31:32Z")

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Is it possible to multicast cross-host on rancher?

Multi-casting works cross-containers on docker automatically because they are all on the same bridged network. Each host contains a network bridge container, so I was assuming all hosts would be on the same virtual bridge.  
I have set up two hosts on AWS in the same VPC, and can not get multicasting working between them.  
Is there a way to get multicasting to work cross-host? I use multicasting for cluster discovery between containers.

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**Author:** ![vincent](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/vincent/32/7156_2.png) [@vincent](https://forums.suse.com/u/vincent)\
**Post date:** [October 7, 2015, 7:54pm UTC](https://forums.suse.com/t/cross-host-multicasting-on-rancher/649/2 "2015-10-07T19:54:42Z")

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No, the overlay network is Layer 3 only… Some [more info](https://github.com/rancher/rancher/issues/1914#issuecomment-135822124) here, and the [metadata](http://docs.rancher.com/rancher/metadata-service/) that’s mentioned in there exists now.