When trying to add the command set switch-options voip interface access-ports forwarding-class expedited-forwarding, we get disconnected from the switch. We have tried to run set switch-options voip interface access-ports forwarding-class ? as well with the same results.

Cannot add forwarding-class to voice vlan:

{master:0}[edit]
root@jtac-ex4300-48p-lab# set switch-options voip interface ge-0/0/0 forwarding-class ?
Nov 04 04:03:09
Possible completions:
  <forwarding-class>   Forwarding class
{master:0}[edit]
root@jtac-ex4300-48p-lab# set switch-options voip interface ge-0/0/0 forwarding-class    
error: remote side unexpectedly closed connection
root@jtac-ex4300-48p-lab:RE:0% 

{master:0}[edit]
root@jtac-ex4300-48p-lab# set switch-options voip interface ge-0/0/0 forwarding-class expedi 
error: remote side unexpectedly closed connection
root@jtac-ex4300-48p-lab:RE:0% 

Nov  4 04:03:23  jtac-ex4300-48p-lab mgd[20059]: UI_DBASE_LOGOUT_STALE_SESSION: Login information for stale configuration mgd session with pid '20054' is removed

This issue "error: remote side unexpectedly closed connection" is observed when mixed mode is enabled. EX4300 can only be operated as line card in mixed mode VC. It cannot be operated as master or backup. 

You can disable mixed mode and check the cli.

root@jtac-ex4300-48p-lab# show switch-options 

voip {

  interface ge-0/0/0.0 {

    vlan v10;

    forwarding-class expedited-forwarding;

  }

}

 

root@jtac-ex4300-48p-lab# run show virtual-chassis status   

 

Virtual Chassis ID: 2e01.1fbb.a77b

Virtual Chassis Mode: Enabled

                        Mstr      Mixed Route Neighbor List

Member ID Status  Serial No  Model     prio Role   Mode Mode ID Interface

0 (FPC 0) Prsnt  PD3723102157 ex4300-48p   128  Master*   N VC

 

Member ID for next new member: 1 (FPC 1)

 

To disable mixed mode you need to use the command below (it requires a reboot):

 

root@jtac-ex4300-48p-lab> request virtual-chassis mode mixed disable    

fpc0:

--------------------------------------------------------------------------

Mode set to 'Virtual Chassis with similar devices'. (Reboot required)

{master:0}

root@jtac-ex4300-48p-lab> request system reboot

Reboot the system at now? [yes,no] (no) yes