In Ex4650-48Y-4c platform the 25G interfaces are not showing in "show interface terse" output; however, we could see that the SFPs are listed in "show chassis hardware".

Noticed 25G interfaces are not showing in show interface terse output.

• When we insert 25G SFP in switch, those interfaces are not showing in "show interface terse" output; however, we could see the SFPs details in show chassis hardware output.

         Description :
         SFP : SFP28-25G-BASE-SR

         Part number :740-068639

user@device > show chassis hardware

Hardware inventory:

Item            Version Part number Serial number    Description

Chassis                               XXXXXXXXXXXX     JNP48Y8C-CHAS

Pseudo CB 0

Routing Engine 0         BUILTIN     BUILTIN          RE-EX4650-48Y-8C

FPC 0           REV 15  650-083242  XXXXXXXXXXXX     JNP48Y8C-CHAS

 CPU                    BUILTIN     BUILTIN          FPC CPU

 PIC 0                  BUILTIN     BUILTIN          48x25G-8x100G

   Xcvr 38     REV 01  740-068639  XXXXXXXXXXXX    SFP28-25G-BASE-SR

   Xcvr 39     REV 01  740-068639  XXXXXXXXXXXX    SFP28-25G-BASE-SR

user@device> show interfaces terse

Interface              Admin Link Proto   Local                Remote

gr-0/0/0               up   up

pfe-0/0/0              up   up

pfe-0/0/0.16383        up   up  inet

                                  inet6

pfh-0/0/0              up   up

pfh-0/0/0.16383        up   up  inet

pfh-0/0/0.16384        up   up  inet

et-0/0/48              up   up

et-0/0/48.16386        up   up

et-0/0/49              up   up

et-0/0/49.16386        up   up

• As per the hardware, 48 25-Gigabit Ethernet ports can operate at 1-Gbps, 10-Gbps, or 25-Gbps speed and support SFP, SFP+, or SFP28 transceivers.
• Please check the SFP part number, whether it is supported for this platform in Juniper Path Finder (https://apps.juniper.net/home/), if the SFP is not supported for this platform then we need to try by connecting supported SFPs.
• We don't get an option to change the speed on concerned port using the below configuration :

         user@device# set chassis fpc 0 pic 0 port 38 speed ?

     No valid completions

• On EX4650 switch, the port 38 is part of port range 36-39, hence we need to change the speed of port 38. For the same we have to enable the below configuration to make the speed as 25G interface. Once we enable the configuration we could see that the interfaces are showing in "show interface terse" output.

          user@device# set chassis fpc 0 pic 0 port 36 speed 25g

          [edit chassis fpc 0 pic 0 port 36 speed]

          'speed 25g'

           warning: 25g config will be applied to ports 36 to 39

user@device> show interfaces terse

Interface              Admin Link Proto   Local                Remote

gr-0/0/0               up   up

pfe-0/0/0              up   up

pfe-0/0/0.16383        up   up  inet

                                  inet6

pfh-0/0/0              up   up

pfh-0/0/0.16383        up   up  inet

pfh-0/0/0.16384        up   up  inet

et-0/0/38              up   up

et-0/0/38.16386        up   up

et-0/0/38              up   up

et-0/0/39.16386        up   up

• In same way, if we need to enable 25G for other interfaces in Ex4650, please use the below configuration.

                        set chassis fpc 0 pic 0 port 0 speed 25g
           set chassis fpc 0 pic 0 port 4 speed 25g
           set chassis fpc 0 pic 0 port 8 speed 25g
           set chassis fpc 0 pic 0 port 16 speed 25g
           set chassis fpc 0 pic 0 port 20 speed 25g
           set chassis fpc 0 pic 0 port 24 speed 25g
           set chassis fpc 0 pic 0 port 28 speed 25g
           set chassis fpc 0 pic 0 port 32 speed 25g
           set chassis fpc 0 pic 0 port 36 speed 25g
           set chassis fpc 0 pic 0 port 40 speed 25g
           set chassis fpc 0 pic 0 port 44 speed 25g
 

• If you are still facing any issue with speed or the interface, please raise JTAC case to check the issue further.