Concept Guide

• Management Interfaces
• VLAN Interfaces
• Loopback Interfaces
• Null Interfaces
• Port Channel Interfaces
• Bulk Conguration
• Dening Interface Range Macros
• Monitoring and Maintaining Interfaces
• 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
• Provisioning Combo Ports
• View Advanced Interface Information
• Conguring the Trac Sampling Size Globally
• Dynamic Counters
Interface Types
The following table describes dierent interface types.
Table 25.
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)
Optional Modules
S3100 series supports an optional small form-factor pluggable plus (SFP+) or 10GBase-T module.
In S3100 series, the hot swap of optional modules is supported with the following behavior:
• If you change the same type of optional module, then the old conguration is retained.
• If you change a dierent type of optional module, then the optional module is moved into error state.
• You can modify the conguration of optional module interfaces, only if the optional module is present.
• After removing the optional module, you need to wait for the syslogs to be removed before inserting the optional module again. You
cannot insert the module immediately.
Interfaces
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