Use this command to set the default speed of one or more ports.
| port-string | Specifies the port(s) for which to set a value for default port speed. |
| 10 | 100 | 1000 | 10000 | 40000 | Specifies the port speed. Valid values are: 10 Mbps, 100 Mbps, 1000 Mbps, 10000 Mbps, or 40000 Mbps. |
None.
All command modes.
The 10 and 100 Mbps options are supported on the S- and K-Series platforms.
The default port speed setting only takes effect on ports that have auto-negotiation disabled.
On the S- and 7100-Series see the The 40Gpbs QSFP Port discussion in the S-, K-, and 7100 Series Configuration Guide for a detailed discussion related to changing QSFP 40/10Gbps port speed.
On the 7100-Series platform, when a 40GB QSFP fiber MAU is present, the system cannot determine from the QSFP cabling whether the mode should be set to 1x40GB mode or 4x10GB mode. The port defaults to 1x40GB mode. To set 4x10GB mode on the 7100-Series, enter set port speed port-string 10000. Use the 40GB fg.x.y designation for the port-string. The port will move to a down state and remain down until the system is reset. After the system reset, the port will come back up as four 10GB ports using the port-string format tg.x.y.
On the 7100-Series platform, to set the 4x10GB mode back to 1x40GB mode, enter the command set port speed port-string 40000 specifying one of the 10GB ports. The four 10GB ports will move to a down state and remain down until the system is reset. After the system reset, the port will come back up as a single 40GB port using the port-string format fg.x.y.
This example shows how to set Ethernet port 3 in slot 3 to a port speed of 1000 Mbps:
System(rw)->set port speed ge.3.3 1000
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