Curious how the following scenario would be handled in the real world for a UC deployment.
Assume the Access switches are layer 2 only. ( Data Vlan 10 Voice Vlan 20) Access switch is trunked to a layer 3 Distribution/Core Switch. Call Manager and Unity are configured in Vlan 30. The phones in Voice Vlan 20 need to reach Call Manager in Vlan 30. Typically there would be SVI interfaces configured on Distribution Switch for each Vlan to handle routing between the Vlans. The problem is... there are no IP Phones/hosts plugged into the Distribution Core Switch in VLAN 20 so the SVI interface will not be in a UP state.....therefore no routing between Vlan 20 and Vlan 30 is possible. The only solution I see is to plug an IP Phone into the Distribution/Core switch configured in Vlan 20.....I could then take my entire voice network down by unplugging that single phone???? There must be a better way...what am I missing? Thanks Jeff
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