Multicasting over GRE

Answered Question
Jun 17th, 2010
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Hi,


If we configure GRE tunnel between over the network which is not Multicasting enabled. But we need to send multicasting packets over GRE tunnel.

If we run routing protocol on the GRE tunnel it will form the neighbor relationship. Will it encapsulate the multicasting packets?


Please share the experience.


Thanks in advance


Subodh

Correct Answer by Hitesh Vinzoda about 6 years 10 months ago

Hi,


Make sure that RPF is done over the GRE tunnel, otherwise multicast will not work...



HTH


Hitesh Vinzoda


Pls rate useful posts.

Correct Answer by Tod Larson about 6 years 10 months ago

Multicast over GRE works great.  We use the ip pim sparse-dense-mode command on each end of the tunnel and performs great.

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Correct Answer
Tod Larson Thu, 06/17/2010 - 19:24
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Multicast over GRE works great.  We use the ip pim sparse-dense-mode command on each end of the tunnel and performs great.

Correct Answer
Hitesh Vinzoda Thu, 06/17/2010 - 22:31
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Hi,


Make sure that RPF is done over the GRE tunnel, otherwise multicast will not work...



HTH


Hitesh Vinzoda


Pls rate useful posts.

bapatsubodh Fri, 06/18/2010 - 03:47
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Thanks guys !!

By RPF you mean reverse path  forwarding ..am I correct ..

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