100G transceiver used as VCP port or network port will either not come up or come up as 40G

Description

Symptoms

When a 100G transceiver is a fiber cable, then the port won't come up and when a 100G transceiver is a DAC (Direct Attach Copper) cable, then the port will come up as 40G instead of 100G. The CLI command "show interfaces vcp-<> extensive" will show the speed as 40G.

root@device> show interfaces vcp-<> extensive

Physical interface: vcp-<>, Enabled, Physical link is Down

Interface index: 128, SNMP ifIndex: 0, Generation: 131

Type: 105, Link-level type: Virtual-Chassis-Interface, MTU: 1514, Clocking: Unspecified, Speed: 40000mbps <<< Speed will be set as 40G.

Solution

The issue was reported on PR1711407 and is resolved on the following codes.

Resolved-In

junos:22.2R3-S1 junos:22.3R2-S1 junos:22.3R3 junos:22.4R2 junos:22.4R3 junos:23.1R2 junos:23.2R1 junos:23.3R1

https://prsearch.juniper.net/problemreport/PR1711407

Modification History

2023/06/14 -Creation date