# \[ERROR\] WSREP: Unrecognized parameter 'gmcast.segment'

**URL:** <https://forums.percona.com/t/error-wsrep-unrecognized-parameter-gmcast-segment/4543>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [November 24, 2015, 8:07am UTC](https://forums.percona.com/t/error-wsrep-unrecognized-parameter-gmcast-segment/4543 "2015-11-24T08:07:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ginda](https://avatars.discourse-cdn.com/v4/letter/g/e68b1a/32.png) [@ginda](https://forums.percona.com/u/ginda)\
**Post date:** [November 24, 2015, 8:07am UTC](https://forums.percona.com/t/error-wsrep-unrecognized-parameter-gmcast-segment/4543/1 "2015-11-24T08:07:03Z")

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Hello all

I have added the below to my.cnf

wsrep\_cluster\_address = gcomm://  
wsrep\_node\_address = 10.76.199.226  
wsrep\_node\_incoming\_address = 10.76.199.226  
wsrep\_provider = /usr/lib64/libgalera\_smm.so  
wsrep\_provider\_options = “gmcast.segment=1”

It does not start up the cluster anymore stating the below error:

[ERROR] WSREP: Unrecognized parameter ‘gmcast.segment’

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**Author:** ![jaime](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@jaime](https://forums.percona.com/u/jaime)\
**Post date:** [November 27, 2015, 10:48pm UTC](https://forums.percona.com/t/error-wsrep-unrecognized-parameter-gmcast-segment/4543/2 "2015-11-27T22:48:07Z")

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What version of PXC are you using? It looks like you’re using an older version and so that variable does not exist in the version that you are using. As per [URL][http://galeracluster.com/documentation-webpages/galeraparameters.html[/URL]](http://galeracluster.com/documentation-webpages/galeraparameters.html%5B/URL%5D) , that parameter is available for Galera 3+