I’m running some tests in our lab with HDR infrastructure.
I’m having an issue with one host that reports as connected at EDR speed despite the NIC being CX6 HDR200. It’s connected to an unmanaged HDR switch. Other similarly configured hosts connected to the same switch report 200Gb/s.
Any pointers are appreciated.
[root@weka5 ~]# mlxlink -d /dev/mst/mt4123_pciconf0
Operational Info
State : Active
Physical state : LinkUp
Speed : IB-EDR
Width : 4x
FEC : Standard LL RS-FEC - RS(271,257)
Loopback Mode : No Loopback
Auto Negotiation : ON
Supported Info
Enabled Link Speed : 0x00000021 (EDR,SDR)
Supported Cable Speed : 0x0000007f (HDR,EDR,FDR,FDR10,QDR,DDR,SDR)
Troubleshooting Info
Status Opcode : 0
Group Opcode : N/A
Recommendation : No issue was observed.
Tryin to set the speed fails:
[root@weka5 ~]# mlxlink -d /dev/mst/mt4123_pciconf0 --speeds 100G_2x
Operational Info
State : Active
Physical state : LinkUp
Speed : IB-EDR
Width : 4x
FEC : Standard LL RS-FEC - RS(271,257)
Loopback Mode : No Loopback
Auto Negotiation : ON
Supported Info
Enabled Link Speed : 0x00000021 (EDR,SDR)
Supported Cable Speed : 0x0000007f (HDR,EDR,FDR,FDR10,QDR,DDR,SDR)
Troubleshooting Info
Status Opcode : 0
Group Opcode : N/A
Recommendation : No issue was observed.
Configuring Port Speeds…
Errors
Sending PTYS (Configuring port speeds) raised the following exception: 100G_2X is not supported by Device!
Supported Speeds Are: EDR,QDR,DDR,SDR
Only one link?
[root@weka5 ~]# mlxlink -d /dev/mst/mt4123_pciconf0 --show_links --port_type PCIE
Valid PCIe Links
Legend : depth, pcie_index, node, port
Link 1 : 0, 0, 0, 0