Description

Customers may face issues on the interface in FPC0 PIC 2, like et-0/2/3 / xe-0/2/3, but the interface is not showing up or recognized in the configuration or show interface outputs.

Symptoms

  • SFP+-10G on 4x25G SFP28 Module shows “error: device xe-0/2/3 not found”
  • The following scenario may also affect the placement of 10G and 25G within the same 4x25G SFP28 Module.

 

root@EX4400-48MP# run show chassis hardware
Mar 04 18:32:18
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                000000000000      EX4400-48MP
Pseudo CB 0    
Routing Engine 0          BUILTIN      BUILTIN           RE-EX4400-48MP
FPC 0            REV 11   650-114387   000000000000      EX4400-48MP
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0          REV 11   BUILTIN      BUILTIN           36x100M/1G/2.5G Base-T & 12x 100M/1G/2.5G/5G/10G Base-T
  PIC 1          REV 11   650-114387   000000000000      2x100G QSFP28 VCP
  PIC 2          REV 04   650-107357   000000000000      4x25G SFP28
    Xcvr 0       REV 01   740-031981   0000000           SFP+-10G-LR
    Xcvr 1       REV 01   740-071562   000000000000     SFP28-25G-BASE-LR
    Xcvr 3       REV 01   740-031981   000000           SFP+-10G-LR

 

Solution

1- Issue the command "set chassis fpc 0 pic 2 port 0 speed 10g", which applies to ports 0 to 3 on PIC 2.

 
root@EX4400-48MP# set chassis fpc 0 pic 2 port 0 speed 10g
[edit chassis fpc 0 pic 2 port 0 speed]
  'speed 10g'
    warning: 10g config will be applied to ports 0 to 3
 
{master:0}[edit]
root@EX4400-48MP# commit comment "set chassis fpc 0 pic 2 port 0 speed 10g"
configuration check succeeds
commit complete
 
{master:0}[edit]
root@EX4400-48MP# show chassis | display set
set chassis fpc 0 pic 2 port 0 speed 10g
 
  • The 25G port et-0/2/1 is not seen with “error: device et-0/2/1 not found”
{master:0}[edit]
root@EX4400-48MP# run show interfaces terse | match /2/
xe-0/2/0                up    up
xe-0/2/0.16386          up    up  
xe-0/2/3                up    up
xe-0/2/3.16386          up    up  
 

2- The second option will be configuring channel-speed, but mixing speed is not yet supported on EX4400 4x25G SFP28 Module

 
{master:0}[edit]
root@EX4400-48MP# show chassis | display set                                  
set chassis fpc 0 pic 2 port 0 channel-speed 10g
set chassis fpc 0 pic 2 port-range 2 3 channel-speed 10g
 
{master:0}[edit]
root@EX4400-48MP# show | compare
[edit chassis fpc 0 pic 2 port 0]
-     speed 10g;
+     channel-speed 10g;
[edit chassis fpc 0 pic 2]
+     port-range 2 3 {
+         channel-speed 10g;
+     }
 
{master:0}[edit]
root@EX4400-48MP# commit comment channel-speed
configuration check succeeds
commit complete
 
{master:0}[edit]
root@EX4400-48MP# run show interfaces terse | match /2/                      
xe-0/2/0                up    up
xe-0/2/0.16386          up    up  
et-0/2/1                up    down
et-0/2/1.16386          up    down
xe-0/2/3                up    up
xe-0/2/3.16386          up    up  
 
  • If deleting the speed and channel-speed on [edit chassis] the default behavior will be displaying only 25G.
 
{master:0}[edit]
root@jtac-EX4400-48MP-r006# delete chassis
 
{master:0}[edit]
root@jtac-EX4400-48MP-r006# commit comment "delete chassis"
Mar 04 18:38:46
configuration check succeeds
commit complete
 
{master:0}
root@jtac-EX4400-48MP-r006> show interfaces terse | match /2/    
Mar 04 18:38:48
et-0/2/1                up    up
et-0/2/1.16386          up    up  

Modification History

2026-03-08 : Article Created