We are having a Cat 2950-24 which we want to use it for our VoIP training LAB and it looks that while we are creating data Vlan and voice Vlan and added under Switch fast interfaces , the IP phones are stoping to work and we are wondering why?
The Switch has IOS version c2950-i6q4l2-mz.121-22.EA6.bin.
The documentation on Cisco web site said that is possible but for some reasons doesn't work right in our case.
Does anyone else has seeing or encounter this issue?
The switch can only handle one "active" interface vlan. The "active" interface VLAN is Native, or becomes the default vlan for management. You can set up DHCP services for several scopes, but the switch will only respond to the DHCP request from the "active" vlan. So if you have a data vlan 10.x.x.x and a voice vlan 192.x.x.x, you will need a router between the vlans. The layer 2/3 switches will route for you, but this switch will not. Do not give up on the double VLAN trunking to the phone.
Turn on trunking to the phone. ?switch mode trunk?
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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