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Connecting Cisco SG300-10 to Cisco 6513 Core for ShoreTel Phones

david.klein
Level 1
Level 1

I have a new ShoreTel Phone system going in soon.  I setup a dhcp scope, including option 156 which is required for ShoreTel in order to get the configuration to the ShoreTel phones and in order to get on the correct voice vlan on the phone.  I also created a new vlan 112 for the voice vlan.  when I plug directly into the Cisco 6513 Core switch, the phone boots fine, gets its configuration and on the correct vlan 112.

We have a training room in which we will be training a bunch of users.  I ordered 6 Cisco small business SG-300 10port POE switches for this training room.  I plugged the switch into a cable coming off the 6513 which is just an access port and in the voice vlan which I created for VOIP shoretel phones:

interface FastEthernet10/11
 switchport
 switchport mode access
 switchport voice vlan 112
 priority-queue queue-limit 20
 wrr-queue random-detect min-threshold 1 30 40 50 60 70 80 90 100
 wrr-queue random-detect min-threshold 2 30 40 50 60 70 80 90 100
 wrr-queue random-detect min-threshold 3 30 40 50 60 70 80 90 100
 wrr-queue random-detect max-threshold 1 70 80 90 100 100 100 100 100
 wrr-queue random-detect max-threshold 2 70 80 90 100 100 100 100 100
 wrr-queue random-detect max-threshold 3 70 80 90 100 100 100 100 100
 wrr-queue cos-map 1 3 1
 wrr-queue cos-map 1 6 4
 wrr-queue cos-map 2 6 0
 wrr-queue cos-map 2 8 2
 wrr-queue cos-map 3 1 7
 wrr-queue cos-map 3 8 3 6
 mls qos trust dscp
 storm-control broadcast level 20.00
 spanning-tree portfast

 

When I plug a phone directly into this cable the phone works fine.  When I plug a cheap cisco POE unmanaged switch in I can get 3 phones working fine, but due to the amount of power needed on this cheap cisco unmanaged switch it will only give 3 phones power.

 

The real problem here is plugging in the cisco small business SG300-10port POE managed switch.  I thought I could just plug in the switch to the above configured port right out of the box and plug phones in without an issue.  When I do plug in the switch and start plugging in ShoreTel phones, they do start coming up and actually have had a couple phones up and going but then eventually there is no dial tone and also eventually they show up on the the screen as service no available.

Do I need to configure a trunk port on a port on the SG300 and the Cisco 6513 in order for this to work?  Also will I need to setup vlans manually on the SG300.  Looks like when I just plugged it in to the above configured port that on the the SG300 it did automatically create the vlan 112.

Any help would be appreciated

 

Thanks

Dave

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Leo Laohoo
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Leo Laohoo
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