Port 0 on a Juniper ex4400-mp switch stack showing up as et-[0-4]/0/0 instead of mge-[0-4]/0/0

On an EX4400 after a reboot port 0/0/0 is displayed as et-0/0/0 instead of mge-0/0/0
 

root@lab# run show interfaces terse | match 0/0/0 
et-0/0/0                up    up
et-0/0/0.16386          up    up  

Due to data type mismatch in channelization code, the switch was incorrectly programming the interface as et instead of mge. Problem is resolved in these codes as per PR1720257

To recover, you need to delete these files and then upgrade the switch to one of the codes with the fix. If the problem is seen in a virtual chassis, you need to delete the files in each member.

>start shell
%rm -rf /config/port_configuration.conf
%rm -rf /config/port_channelization.conf
%exit
>request session member 1
%rm -rf /config/port_configuration.conf
%rm -rf /config/port_channelization.conf
%exit
>request session member 2
%rm -rf /config/port_configuration.conf
%rm -rf /config/port_channelization.conf
%exit

Resolved-In

junos:21.4R3-S4 junos:22.2R3-S1 junos:22.3R2-S1 junos:22.4R3

2025-07-29: Minor, non-technical edit

2023-06-29: Added rm commands, published externally, added PR link in Solution

2023-05-10: Description and Symptoms updated

2023-05-09: Initial draft