Concept Guide

• VLAN Interfaces
• Loopback Interfaces
• Null Interfaces
• Port Channel Interfaces
• Bulk Conguration
• Dening Interface Range Macros
• Monitoring and Maintaining Interfaces
• Conguring wavelength for 10–Gigabit SFP+ optics
• Link Dampening
• Link Bundle Monitoring
• Using Ethernet Pause Frames for Flow Control
• Congure the MTU Size on an Interface
• Port-Pipes
• Auto-Negotiation on Ethernet Interfaces
• View Advanced Interface Information
• Conguring the Trac Sampling Size Globally
• Dynamic Counters
• Discard Counters
Interface Types
The following table describes dierent interface types.
Table 24.
Dierent Types of Interfaces
Interface Type Modes Possible Default Mode Requires Creation Default State
Physical L2, L3 Unset No Shutdown (disabled)
Management N/A N/A No No Shutdown (enabled)
Loopback L3 L3 Yes No Shutdown (enabled)
Null N/A N/A No Enabled
Port Channel L2, L3 L3 Yes Shutdown (disabled)
VLAN L2, L3 L2 Yes (except default)
L2 - Shutdown (disabled)
L3 - No Shutdown
(enabled)
View Basic Interface Information
To view basic interface information, use the following command.
You have several options for viewing interface status and conguration parameters.
• Lists all congurable interfaces on the chassis.
EXEC mode
show interfaces
This command has options to display the interface status, IP and MAC addresses, and multiple counters for the amount and type of
trac passing through the interface.
If you congured a port channel interface, this command lists the interfaces congured in the port channel.
Interfaces
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