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gigabitethernet1/0/8. For a switch with 10/100/1000 ports and SFP module ports, SFP module ports are

numbered consecutively following the 10/100/1000 ports.

You can identify physical interfaces by physically checking the interface location on the switch. You can also

use the show privileged EXEC commands to display information about a specific interface or all the interfaces

on the switch. The remainder of this chapter primarily provides physical interface configuration procedures.

These are examples of how to identify interfaces on a stacking-capable switch:

•

To configure 10/100/1000 port 4 on a standalone switch, enter this command:

Switch(config)# interface gigabitethernet1/0/4

•

To configure 10/100/1000 port 4 on stack member 3, enter this command:

Switch(config)# interface gigabitethernet3/0/4

Default Ethernet Interface Configuration

This table shows the Ethernet interface default configuration, including some features that apply only to Layer

2 interfaces.

Table 4: Default Layer 2 Ethernet Interface Configuration

Default SettingFeature

Layer 2 or switching mode (switchport command).Operating mode

VLANs 1– 4094.

Allowed VLAN range

VLAN 1.Default VLAN (for access ports)

VLAN 1.Native VLAN (for IEEE 802.1Q trunks)

Drop all packets tagged with VLAN 0.802.1p priority-tagged traffic

Switchport mode dynamic auto (supports DTP).VLAN trunking

All ports are enabled.Port enable state

None defined.Port description

Autonegotiate. (Not supported on the 10-Gigabit

interfaces.)

Speed

Autonegotiate. (Not supported on the 10-Gigabit

interfaces.)

Duplex mode

Flow control is set to receive: off. It is always off for

sent packets.

Flow control

Catalyst 2960-X Switch Interface and Hardware Component Configuration Guide, Cisco IOS Release 15.0(2)EX

20 OL-29034-01

Configuring Interface Characteristics

Default Ethernet Interface Configuration

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 107 108

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