Quick Reference Guide

Configuring Interfaces | 117
Viewing Layer 3 Interface Information
To enable Layer 3 traffic on a particular interface, use the ip routing command in Global Config mode to
enable routing for the system, then add an IP address to the selected interface using the
ip address
command — in Interface Config mode for a port or port channel, and in Interface VLAN mode for a
VLAN. For details, see Layer 3 Routing on page 247.
In all interface types except VLANs, the
shutdown command stops all traffic from passing through the
interface. Layer 2 VLANs can only be disabled by disabling each port in the VLAN. A Layer 3 VLAN can
be disabled by removing its IP address. Layer 2 traffic on the VLAN is unaffected by this action.
Before you configure or enter a Layer 3 protocol mode (for example, OSPF), you must put at least one
interface in Layer 3 mode, but not necessarily enabled. To inspect the system for Layer 3 interfaces, use the
show ip interface brief command, which returns the report format shown in Figure 7-83.
Figure 7-83. show ip interface brief Command Example of a Layer 3 Interface
Configuring Physical Interfaces
The following basic configuration tasks for physical interfaces are discussed in this chapter:
• Enabling an Interface on page 120 (mandatory)
• Configuring Speed and Duplex Mode on page 120 (optional)
• Clearing Interface Counters on page 122 (optional)
• Enabling Power over Ethernet Ports (PoE) on page 123 (optional)
As described in Interface Support in SFTOS on page 111, three Layer 2 port types are available in S-Series
switches: 10/100/1000 Ethernet, Gigabit Ethernet (1G), and 10 Gigabit Ethernet (10G). The management
Ethernet interface is another S-Series interface, which is enabled on some S-Series switch types as a
dedicated port and on all S-Series switches as a type of configuration on the management VLAN. This
interface type provides IP-based management access to the S-Series.
By default, all physical interfaces are disabled to traffic and set to auto-negotiate speed and duplex mode.
On 10/100/1000 ports and 1G ports, you can manually set the speed and duplex mode. You cannot
manually set the speed and duplex mode of 10G ports.
Note: Layer 3 interfaces can only be created with the Layer 3 Package of SFTOS. Use the
show version command to determine what package is installed. See Figure 3-8 on page 35.
Force10 #show ip interface brief
Netdir Multi
Interface IP Address IP Mask Bcast CastFwd
--------- --------------- --------------- -------- --------
1/0/3 10.0.0.2 255.255.255.0 Disable Disable