Author Topic: Meraki switch not connecting phones  (Read 3756 times)

Offline magnus

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Meraki switch not connecting phones
« on: January 07, 2021, 02:29:12 PM »
my customer has been rebuilding their infrastucture and switching from HP switches to Meraki switches.

    Release level: 8.0 SP2
    Active software load: 14.0.2.26
    Inactive software load: 13.1.0.36
    System relink: No relink has been applied.
    Call Control relink: No relink has been applied.
    Platform: MXe
    512MB of RAM

If we plug a phone into the meraki switch it does not connect. But if we move that phone to the existing HP switches it connects immediately.
This is what the dhcp options are configured to and the IT guy tells me that is how the meraki is configured t match.

ID   Name   Value   Format   Scope   Vendor ID   ID
3   Router   10.10.1.254   IP Address   Global      3
6   DNS Server   10.10.1.254   IP Address   Global      6
125   Mitel   id:ipphone.mitel.com;sw_tftp=10.10.0.2;call_srv=10.10.0.2;vlan=10;l2p=6;dscp=46   ASCII String   Global   1027   125
128   TFTP   10.10.0.2   IP Address   Global      128
129   RTC   10.10.0.2   IP Address   Global      129
130   MITEL IP PHONE   MITEL IP PHONE   ASCII String   Global      130
134   Diff Service Code Point   46   Numeric   Global   

Can someone tell me what we are missing to make the phones work on the new switches?



Offline lundah

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Re: Meraki switch not connecting phones
« Reply #1 on: January 07, 2021, 02:42:39 PM »
Need to provide more detail on the failure. Do the phones not get DHCP, or just fail to connect to the MiVB?

Offline magnus

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Re: Meraki switch not connecting phones
« Reply #2 on: January 07, 2021, 02:56:25 PM »
They do not get dhcp

Offline sunspark

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Re: Meraki switch not connecting phones
« Reply #3 on: January 07, 2021, 04:31:17 PM »
What kind of phones, 53xx or 69xx?
The phones are in the same subnet? Dhcp relay ?
Hp use lldp, and cisco Cdp.

Basically, you need only option 3 and 125

Offline acejavelin

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Re: Meraki switch not connecting phones
« Reply #4 on: January 07, 2021, 07:24:27 PM »
Meraki switches do not support "auto voice vlan" so essentially you need to make a custom option in the default VLAN's DHCP scope for Option 125, this will tell the phones to "jump" VLANs to the voice VLAN, or to make it easier, use option 43 using the same string as option 125 (but it doesn't need to be an encapsulated option, it can be plain text).

This is typically why we don't use Meraki switches in any voice deployment network, no CDP/LLDP auto VLANing. Cisco small business series (for example) handles this 10 times better than a Meraki MS switch.
« Last Edit: January 07, 2021, 07:26:45 PM by acejavelin »

Offline johnp

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Re: Meraki switch not connecting phones
« Reply #5 on: January 08, 2021, 12:01:02 PM »
I think that option 125 won't work as ascii as it doesn't have the vendor code or string length values that and encapsulated value would I agree to use 43 on the default vlan in your case

Offline acejavelin

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Re: Meraki switch not connecting phones
« Reply #6 on: January 08, 2021, 08:14:27 PM »
I think that option 125 won't work as ascii as it doesn't have the vendor code or string length values that and encapsulated value would I agree to use 43 on the default vlan in your case
That is what I meant, to use option 43 so as not to worry about those things, but I guess it wasn't very clear.

Offline johnp

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Re: Meraki switch not connecting phones
« Reply #7 on: January 09, 2021, 09:57:45 AM »
Quote
That is what I meant, to use option 43 so as not to worry about those things, but I guess it wasn't very clear.
On the same page my friend, just thought I'd add what I saw


 

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