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EX3300 LLDP-MED and ShoreTel 400 series phone - works intermittently

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  • 1.  EX3300 LLDP-MED and ShoreTel 400 series phone - works intermittently

    Posted 02-19-2018 17:01
      |   view attached

    I'm not sure if this is a problem with ShoreTel (now Mitel) phones or a problem on my Juniper switch. I have a 24 port EX3300 on Junos: 15.1R6.7. and LLDP-MED only works intermittently.  What I mean by that, is most of the time the phone comes up and requests an IP address from the data vlan first. I can plug an old ShoreTel MGCP phone in the same switchport, and there's a much higher success rate (maybe 85% of the time). When the phone works correctly, it requests an IP address from the voice vlan first. I can see via port analyzers that there's certainly an exchange of LLDP traffic between the Juniper switch and ShoreTel phone (IP480).

     

    Output of show lldp neighbors:

     

    root@ex3300-24p> show lldp neighbors
    Local Interface Parent Interface Chassis Id Port info System Name
    ge-0/0/22.0 - 3c:97:0e:17:f8:a1 3c:97:0e:17:f8:a1
    ge-0/0/14.0 - 192.168.8.202 00:10:49:2d:23:65 Serial Number: 0010492D2365
    ge-0/0/4.0 ae0.0 vmnic2 port 10 on dvSwitch DSwitch (etherswitch) localhost
    ge-0/0/2.0 - vmnic3 port 11 on dvSwitch DSwitch (etherswitch) localhost

     

    My IP480 is currently plugged into ge-0/0/14.

     

    Also attaching a config of my EX3300 (is only currently being used in a lab enviornment).

     

    Any ideas?

     

     

    Attachment(s)

    txt
    EX3300 config.txt   9K 1 version


  • 2.  RE: EX3300 LLDP-MED and ShoreTel 400 series phone - works intermittently

     
    Posted 02-20-2018 16:53

    My only suggestion to you would be see if you could try to change the code from 15.1 to 12.3 (R12-S6 or higher) and then report what happes.

     

    Good luck.



  • 3.  RE: EX3300 LLDP-MED and ShoreTel 400 series phone - works intermittently
    Best Answer

    Posted 07-19-2018 08:57

    Figured I would follow up on this. I had upgraded JunOS and still got the same issue. I pretty much walked away from this whole thing believing that there's just a problem with the hardware on these 400 series phones.

     

    So recently, Mitel released a resolved issue list with the following:

     

    ENG-542554 400 series phones ignore the VLAN assignment in the LLDP policy and sends out DHCP request on native VLAN

     

    So this has been a firmware issue for a long time on these phones. I did some testing and found the phones work correctly about 75% of the time now. So they've made it better, I'm sure they'll continue to improve it.