Configuring Ethernet Interfaces; Default Ethernet Interface Configuration - Cisco Catalyst 3560-X Software Configuration Manual

Configuring Ethernet Interfaces

Configuring Ethernet Interfaces
These sections contain this configuration information:
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Default Ethernet Interface Configuration

Table 1-3
Layer 2 interfaces. For more details on the VLAN parameters listed in the table, see
"Configuring VLANs."
Port-Based Traffic Control."
To configure Layer 2 parameters, if the interface is in Layer 3 mode, you must enter the switchport
Note
interface configuration command without any parameters to put the interface into Layer 2 mode. This
shuts down the interface and then reenables it, which might generate messages on the device to which
the interface is connected. When you put an interface that is in Layer 3 mode into Layer 2 mode, the
previous configuration information related to the affected interface might be lost, and the interface is
returned to its default configuration.
Table 1-3 Default Layer 2 Ethernet Interface Configuration
Feature
Operating mode
Allowed VLAN range
Default VLAN (for access ports)
Native VLAN (for IEEE 802.1Q trunks)
VLAN trunking
Port enable state
Port description
Speed
Duplex mode
Flow control
EtherChannel (PAgP)
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
1-30
Default Ethernet Interface Configuration, page 1-30
Configuring Interface Speed and Duplex Mode, page 1-31
Configuring IEEE 802.3x Flow Control, page 1-33
Configuring Auto-MDIX on an Interface, page 1-34
Configuring a Power Management Mode on a PoE Port, page 1-35
Budgeting Power for Devices Connected to a PoE Port, page 1-37
Configuring Power Policing, page 1-38
Adding a Description for an Interface, page 1-39
shows the Ethernet interface default configuration, including some features that apply only to
For details on controlling traffic to the port, see
Default Setting
Layer 2 or switching mode (switchport command).
VLANs 1– 4094.
VLAN 1 (Layer 2 interfaces only).
VLAN 1 (Layer 2 interfaces only).
Switchport mode dynamic auto (supports DTP) (Layer 2 interfaces only).
All ports are enabled.
None defined.
Autonegotiate. (Not supported on the 10-Gigabit interfaces.)
Autonegotiate. (Not supported on the 10-Gigabit interfaces.)
Flow control is set to receive: off. It is always off for sent packets.
Disabled on all Ethernet ports. See
Link-State Tracking."
Chapter 1 Configuring Interface Characteristics
Chapter 1, "Configuring
Chapter 1, "Configuring EtherChannels and
Chapter 1,
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