How to view SFP info and properties in JunOS machine

In order to find out info of SFP installed in the Junos machine without taking out the SFP module, do the following commands:

  • Log in to the shell of the relevant FPC. For this example I’ll use fpc4:

master@SW-QFX5100> start shell pfe network fpc4

  • show sfp list

(vty)# show sfp list
SFP Toolkit summary:
wakeup count: 47223201, debug: 0, periodic enabled: 1, diagnostics enabled: 1
thread: 0x03deaa78, itable: 0x03ddd868, itable iterator: 0, sem: 0x03e36fe8
polling interval delay:  1000 ms, polling max cpu:  100 ms
poll for diags every  3 wakeups , SFPs polled for diags last time:  2
last periodic CPU time:    1 ms, maximum periodic CPU time:     82 ms
SFP Toolkit syslog throttling parameters:
period: 120 samples , disable threshold:  10, enable threshold   0

Index   Name             Presence     ID Eprom  PNO         SNO          calibr
—–   ————–   ———-   ——–  ———-  ———– ——-
1   Uplink SFP+ PIC(2)      Present   Complete  740-021333  AB33333         int
2   Uplink SFP+ PIC(3)      Present   Complete  740-021222  AB22222         int

I2C Acceleration table
Index   Name             Presence     ID Eprom     Reg ID    I2C Master    I2C Group
—–   ————–   ———-   ——–    ——–    ————   ——-

(vty)# show sfp 1   ?
<carriage return>     Completes command
alarms                SFP diagnostics alarms
diagnostics           display diagnostic measurements and thresholds
info                  SFP information

  • You can use only “show sfp <index of installed sfp>” and you’ll get those kind of information for example:



Cannot log to Space CLI after installation

First , in order to troubleshoot this issue , you need to be sure that ssh is enabled . How ?

  • power off the machine from VMware workstation or vSphere , or suspend it.
  • power it on
  • after entering user/pass , you’ll be asked to select which mode to enter , check security (5)
  • if appears disable ssh , then ssh is enabled . if not , then enable it .
  • if then is not your problem , then enter the debugging mode (7) and do the following:

write down the command : $ ls -al /etc/ssh/ssh*key


if appears nothing , or zero as it shows in the picture , then you need to re-generate ssh key using the following command:

sudo ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key

and then click Enter twice .

This should solve your problem .

If not , back to “secuirty (5)” section , and try disabling firewall .

Note: For more information regarding ssh keys , visit the following site.