opt 150 when you have multiple call manage clusters

[michael_oldham]

A switch with one voice vlan and a mixed set of users such as IPT users connected to a IPT cluster and call center users connected to a call center cluster. Having an issue trying to deliver opt 150 to them uniquely. dhcp does not seem to have a mac to option mechanism without reserving an ip address. Any help appreciated

[paolo bevilacqua]

Seem to me you ought to split the vlan depending on which CM the phone has to go.

Some cisco switches also support mac-based vlans

[htluo]

This is done by "DHCP scope". On DHCP server, you may define different scopes and each scope would have different options.

In the router, you configure ip-helper. Depending on the different forwarding address, DHCP will choose different scope to offer IP addresses.

This is a very standard configuration.

Hope this help.

Michael

http://htluo.blogspot.com

[paolo bevilacqua]

Michael, the thing is that in a single vlan, there will be a single forwarding address so it won't be possible to distinguish on that basis.

Perhaps there is some other attribute that can be used.

[htluo]

Ah...ok, didn't notice that.

Yes, they'll have to separate those into different VLANs.

Michael

[MARTIN STREULE]

Maybe this helps:

"Centralized TFTP in a Multiple Cluster Environment"

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_0_1/ccmsys/a02tftp.html#wp1074677

Cheers,

Martin