Quick Reference Guide

122 | Configuring Interfaces
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The following table describes the expected interface status of two directly connected fiber ports based on
the configured or auto-negotiated speed and duplex settings. The fiber ports support only auto-negotiation
or 1 Gbps full-duplex.
Configuring Layer 3 Mode
To enable Layer 3 on a port, you assign an IP address to the port. First, inspect the port list to see what IP
addresses have been assigned. See Viewing Layer 3 Interface Information on page 117.
By assigning an IP address to a physical interface, you place it in Layer 3 mode. You must also enable
routing at the system level and on the interface. Routed traffic now passes through the interface, and you
can configure routing protocols on that interface. For details, see Layer 3 Routing on page 247.
Clearing Interface Counters
The counters in the report generated by the show interfaces command can be reset by the following
command. This command does not clear the counters captured by any SNMP program.
When you enter the clear counters command, the CLI prompts you to confirm that you want FTOS to clear
the type of counters that you specified. The three options and responses are shown in Figure 7-87.
Table 7-5. Expected Interface Status of Directly Connected Fiber Ports
Port B
Port A 1 Gbps Full No Auto-negotiation Auto-negotiation
1 Gbps Full
Up Up Up
No Auto-negotiation
Up Up Down
Auto-negotiation
Up Down Up
Note: Layer 3 (routing) in SFTOS requires the Routing Package (Layer 3 Package) of SFTOS.
Command Syntax Command Mode Purpose
clear counters
[unit/slot/port | all]
Privileged Exec
Without an interface specified, the command clears counters for all
ports.
With an interface specified, the command clears counters for that
interface only.
When you use the keyword all, the command clears counters for the
entire switch.