Typically it is always recommended to segregate VoIP traffic from your typical data traffic. Recently, however, I was part of a Mitel phone system installation that was taking a different course. The techs with the local phone company doing the installation were not familiar with this concept and wanted to actually statically address the phones as well. Not cool, scalable or best practice particularly as the network grows and changes.
The network looked something like the image above in the simplest sense. The red VLAN was for data and the blue for voice. The link to the PC was delivered through the built in switch port in the phone. The blue VLAN to the phone is tagged traffic while the red is not. The details ended up looking something like this:. To understand the dynamic configuration of the Mitel phones you have to first understand how the boot. Simply put it goes like this:.
I may have greatly simplified that but the key points have been made. I am using Centos dhcpd in this example. Open the configuration file for dhcpd and setup similar to my example below. The Mitel options are the only real customized settings. Option 43 gets the phone all the information it needs and should be sent to the phone each time it makes a DHCP request. With this configuration in place the phones, when starting up initially, get the VLAN information and restart.
The interface configuration worked out like this:. The phone should then be getting its configuration as needed. To troubleshoot the best course of action is to verify DHCP requests are traversing the network properly. I read back over this writeup today to get a copy of the Mitel specific string for an implementation and figured I would add some material here about my latest experience.Hi guys, I'm more of a network guy than a telecom guy we do have 2 of those guys that take care of the voip sidebut I'm hoping someone has seen this issue before.
We are primarily a CiscoG, X shop in terms of switches but recently got a bunch of Xs. We noticed that the Mitel phones are now taking 30 minutes to fully load up and get a dialtone on the new switches compared to the old s. We have tried phones that were previously registered, brand new, etc.Mitel MiVoice Connect Administrator Training: Part 2 (2019)
We also confirmed that when we take the non-working phones to the s they boot up immediately as usual. This is strictly POE only, we do not use injectors or power blocks on our phones. We have confirmed this on multiple stacks, with all horizontal cabling removed from equation.
We have confirmed this on Mitel phone model so far. Anyone have any ideas here? DHCP scopes have plenty of room, no issue there. Options and helper addresses must be set right as it works eventually and with the s. We could really use some help on this as it's setting us back on our voip deployment. I am going to open a tac case on this. To see exactly what is happening on the interface, I would create a monitor session on the switch and do a packet capture.
Hopefully you will see what the holdup is. With both ports configured with the same two vlans only, does it still take 30 minutes to boot up? The vlans don't seem to matter, it doesn't work with whatever vlans we try. In terms of config we even went as simple as:. Still doesn't work.
The same exact config works everywhere else on the s, we can't get one to boot in a normal amount of time on the s. Have you tried a different IOS on the cisco switches? Hi John, thanks for the reply.I swear I googled it first. I currently have a simple Okay while I wrote this I had an idea. Let me know if it's right. Configure all of the switch ports to tag with VLAN1.
I've had zero luck with it and had to go back to options If option 43 works for you, use it. Thanks for the reply. I'm not sure how I would go about tagging the phone and then untagging the data behind. We certainly do use the port on the back; any advise or anything I can read on this?
You have the VLAN in your option 43 string, so that's good. Thank you again for the quick replies.
I think this is where I am getting snagged. The phone is plugged directly into the Zyxel switch. Then the computer is plugged into the back of the phone. Because you're telling the phone to look for traffic on VLAN2 as part of your option 43 string the phone will communicate with the switch using traffic tagged for VLAN2. I don't know the exact commands for your switch, but at the high level it's the exact same idea. Assuming your switch is a managed one and can support VLANs, this is possible.
I was assuming you were excluding the option 43 string for some reason. I'm pretty confident I can pull this off now. To continue this discussion, please ask a new question. Get answers from your peers along with millions of IT pros who visit Spiceworks.I think I have a network issue.
Specifically DHCP. I have a Mitel system. It was installed a few weeks ago. During the install all my phones booted as expected and downloaded firmware. I have not changed my DHCP server. I have searched the web and tried several suggestions but haven't found a great solution just yet. If I reboot the phones 3 or more times they will boot.
Phones are in VLAN 2. Any ideas why the phones would accept option sometimes and not others? I have option configured which should provide all the data in options,and but the phones seem to ignore this too. I am not sure where to go next but I have the technician coming back out on the 17th. If I can not resolve this by then I will have him help me out. Let me know if any others details might be helpful. I could not find any switch or router config errors.
I went back to the DHCP server. When I set up the phones I set up option and I was told to do this because the options were for compatibility with older phones. It appears the new firmware may be getting confused and not using option That way your resetting it to factory defaults so it will be like a new phone when you plug it in again. Hit the feature key on the phone to get to the default phone option.
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SOLVED: Mitel 5330 DHCP: DISCOVERY OPTION 128 MISSING
By joining you are opting in to receive e-mail. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Students Click Here. Hi, Over the weekend, we closed down an old site.
They had a LX controller with a bunch of handsets. Fixed it.
Well kind of. I had a thought that maybe there was a setting somewhere that was stopping it downloading the correct firmware, so I plugged it into the controller. It downloaded a new flash, put it back on the proper network and it now works. I will ask our telephone engineer why this is when he gets back from Japan!
My best guess is that you are using VLAN'ing and you do not have option and set. Connecting directly to the controller would skip this step. Red Flag This Post Please let us know here why this post is inappropriate.
Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Close Box. Students Click Here Join Us! Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. Now the only way I have found of doing a factory reset is: 1.The optypes of the paired fields should match, and for the case of categorical fields, be a proper subset. If a final field has optype text, however, all values are converted to strings.
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