I configure QFX5110-32Q with default mode. Port 8 and 10 are channelized interface and Port 20 are 40G port but Port LED is not shown for Port 20 and status is down.
how i solve this problem?
1. 40G Transceiver is detected on those port.2. Software version is 18.4Rx3. It is connect with ex4300 on non-VC port
Greetings, I am afraid that your device is not in the default mode as all ports are supported as access or uplink ports, but cannot be channelized.
It looks like you are using the Flexi-pic-mode in which ports 20 through 27 are disabled.
Can you issue this command and check?
show chassis system-mode
Now if the mode is default can you reboot the device, it is recommended by Juniper.
When you request the system mode change, we recommend that you reboot the switch for the system mode to take effect.
If the mode is flexi-pic you can change it doing this:
request chassis system-mode default-mode
request system reboot at now
Please keep in mind the following before/while doing any changes :
Changing the system mode causes the FPC to reboot. Because there can be a slight loss of data while the FPC reboots, we recommend that you only configure the changes during a maintenance window for this release.
Take care when changing the channelization mode from Flexi-pic to default. If you have existing ports that are channelized in Flexi-pic mode, remove the channelization from the interface before changing the system mode. Changing the Flexi-pic mode to the default mode with channelized ports causes the ports to go down, log a system log error, and remain down. You must manually remove the channelization configuration on the ports to bring the ports up in default mode.
Official doc: https://www.juniper.net/documentation/en_US/junos/topics/topic-map/switches-interface-port.html#id-configuring-the-system-mode
If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \:)/
Lil DexxJNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB
My device is running on default mode. Port still down and no LED show after reboot
Have you tried doing a physical loop test?
You said that the chassis is recognizing the transceiver right? if yes is it a Juniper supported transceiver?
This worked before?
Do you still have some ports channelized?
Do you see anything in the logs (messages,dcd& chassisd) that could give some insights?
Do you have any configuration under the chassis hierarchy?
You give me an idea by doing loop test, It does works!
Root cause is not on QFX5110-32Q. It is another device that I connect which is EX4300. when 40G port is used as uplink, special commnad is needed! following this link >> http://networkengineerlondon.blogspot.com/2017/02/juniper-ex4300-40g-qsfp-ports.html
Awesome! I very glad to hear that I was able to help 🙂 and thank you for sharing the EX4300 config knobs
If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \/
Lil Dexx JNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB