This KB would be helpful in understanding the port panel of QFX10002, and guide in configuring 100Gb channelization of the ports.

To perform 100Gb port channelization on QFX10002, it is required to have details on port groups. Port channelization is activated on the port-group and not on an individual port.

For 100-Gbps channelization operation, the ports operate within port groups. Every three ports compose a port group. 100-Gigabit can be configured using 28-Gbps QSFP28 optical transceivers. A QSFP28 transceiver has four transmit and four receiver channels, and each lane can carry up to 28G data rate.

When a QSFP28 transceiver is inserted into the ports marked with a fine black line underneath the socket and the port is configured for 100-Gigabit Ethernet, the two adjacent ports are disabled and the QSFP28 is enabled for 100-Gigabit Ethernet.

Every second and sixth port in a 6XQSFP cage on a QFX10002 supports 100-Gigabit Ethernet using QSFP28 transceivers.

When a 40-Gigabit Ethernet transceiver is inserted into a 100-Gigabit Ethernet port, the port recognizes the 40-Gigabit Ethernet port speed. However, when an 100-Gigabit Ethernet transceiver is inserted into the port, the transceiver is not automatically recognized and is not seen in the output of the show chassis hardware command. To enable 100-Gigabit Ethernet on the marked ports, use the set chassis fpc command.

# set chassis fpc 0 pic 0 port 1 speed 100g

The port then recognizes the 100-Gigabit Ethernet speed and disables two adjacent 40-Gigabit Ethernet ports.
 

CONFIGURATION EXAMPLE:

 

root@jtac-qfx10002-72q# set chassis fpc 0 pic 0 port 1 speed 100g

warning: Port 0 and 2 will be disabled or enabled when port 1 in 100g mode is enabled or disabled

 

{master:0}[edit]

root@jtac-qfx10002-72q# show | compare

[edit chassis fpc 0 pic 0]

+    port 1 {

+        speed 100g;

+    }

 

Only the port { 1 5 7 11 13 17 19 23 25 29 31 35 37 41 43 47 49 53 55 59 61 65 67 } can be configured to be 100g port, when any 1 of these port is configured to 100g, other 2 ports in the group would be disabled.



QFX10002 Switch will not allow to configure 100Gb on any other ports from the group.



{master:0}[edit]

root@jtac-qfx10002-72q# set chassis fpc 0 pic 0 port 0 speed 100g   

error: This speed configuration is not supported on port 0. Supported ports are ( 1 5 7 11 13 17 19 23 25 29 31 35 37 41 43 47 49 53 55 59 61 65 67 71 )

error: invalid value: 0

 

{master:0}[edit]

root@jtac-qfx10002-72q# set chassis fpc 0 pic 0 port 2 speed 100g   

error: This speed configuration is not supported on port 2. Supported ports are ( 1 5 7 11 13 17 19 23 25 29 31 35 37 41 43 47 49 53 55 59 61 65 67 71 )

error: invalid value: 2