Dell PowerEdge XL 5133-4 MXL 10/40GbE Switch IO Module FTOS Command Reference - Page 156
Auto-Negotiation on Ethernet Interfaces, Setting Speed and Duplex Mode of Ethernet Interfaces
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www.dell.com | support.dell.com Auto-Negotiation on Ethernet Interfaces Setting Speed and Duplex Mode of Ethernet Interfaces By default, auto-negotiation of speed and duplex mode is enabled on 1GbE and 10GbE Ethernet interfaces on an Aggregator. The local interface and the directly connected remote interface must have the same setting. Auto-negotiation is the easiest way to accomplish these settings, as long as the remote interface is capable of auto-negotiation. Note: As a best practice, Dell Force10 recommends keeping auto-negotiation enabled. Auto-negotiation should only be disabled on switch ports that attach to devices not capable of supporting negotiation or where connectivity issues arise from interoperability issues. For 100/1000/10000 Ethernet interfaces, the negotiation auto command is tied to the speed command. Auto-negotiation is always enabled when the speed command is set to 1000 or auto. In FTOS, the speed 1000 command is an exact equivalent of speed auto 1000 in IOS. To discover whether the remote and local interface require manual speed synchronization, and to manually synchronize them if necessary, follow these steps (also refer to Figure 10-20 on page 143). Step 1 2 3 4 5 6 7 8 Task Command Syntax Determine the local interface status. Refer show interfaces [interface] status to Figure 10-19. Determine the remote interface status. [Use the command on the remote system that is equivalent to the above command.] Access CONFIGURATION mode. config Access the port. interface interface slot/port Set the local port speed. speed {100 | 1000 | 10000 | auto} Optionally, set full- or half-duplex. duplex {half | full} Disable auto-negotiation on the port. If the speed is set to 1000, you do not need to disable auto-negotiation no negotiation auto Verify configuration changes. show config Command Mode EXEC Privilege EXEC EXEC Privilege EXEC Privilege CONFIGURATION INTERFACE INTERFACE INTERFACE INTERFACE Note: The show interfaces status command (Figure 10-19) displays link status, but not administrative status. For link and administrative status, use the show ip interface [interface | brief] [configuration] command. 142 | Interfaces