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Silver

2 CUCM Clusters on same VLAN!

<p>Hi, have a customer is migrating from CUCM5.1 to 6.1, using new Hardware.  The plan is to build the new Cluster on new hardware and then migrate a site across a week.</p>

<p>Just discovered that they plan on using the same Voice VLAN on their core switches where the CUCM's will be connected.  Would this not cause problems?</p>

<p>TIA.</p>

5 REPLIES
Hall of Fame Super Silver

Re: 2 CUCM Clusters on same VLAN!

As long as the new servers will utilize new hostnames and IP addresses you will not have any issues.  Otherwise you will create a confilict.

HTH,

Chris

Silver

Re: 2 CUCM Clusters on same VLAN!

Hi Chris, thanks for the reply and clarification.  I just wanted to be doubly sure before we plowed ahead.

Regards.

Bronze

Re: 2 CUCM Clusters on same VLAN!

dez,

the other thing is that if both clusters do reside on the same VLAN then how the phones connect will depend on the information withing the DHCP scope, when you are ready to change clusters just change option 150 to the new cluster

 

Thanks

Paul

Hall of Fame Super Silver

Re: 2 CUCM Clusters on same VLAN!

Actually, a better option may be to enable centrelized TFTP between the 2 clusters.

Chris

Bronze

Re: 2 CUCM Clusters on same VLAN!

Very true

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