Default Ethernet Interface Configuration - Cisco 2950 - Catalyst Switch Configuration Manual

Chapter 11 Configuring Interface Characteristics
These sections describe the default interface configuration and the optional features that you can
configure on most physical interfaces:
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Default Ethernet Interface Configuration

Table 11-1
listed in the table, see
see
Table 11-1 Default Ethernet Interface Configuration
Feature
Operating mode
Allowed VLAN range
Default VLAN (for access ports)
Native VLAN (for 802.1Q trunks)
VLAN trunking
Port enable state
Port description
Speed
Duplex mode
Flow control
EtherChannel (PAgP) and Link
Aggregation Control Protocol (LACP)
Port blocking—unknown multicast and
unknown unicast traffic (Catalyst 2950
LRE switches only)
Broadcast, multicast, and unicast storm
control
Protected port
Port security
Port Fast
Media Type (Catalyst 2950 LRE
switches only)
78-11380-10
Default Ethernet Interface Configuration, page 11-9
Configuring Interface Speed and Duplex Mode, page 11-10
Configuring Media Types for Gigabit Ethernet Interfaces on LRE Switches, page 11-13
Configuring IEEE 802.3z Flow Control on Gigabit Ethernet Ports, page 11-13
Adding a Description for an Interface, page 11-14
shows the Ethernet interface default configuration. For more details on the VLAN parameters
Chapter 17, "Configuring VLANs."
Chapter 22, "Configuring Port-Based Traffic Control."
For details on controlling traffic to the port,
Default Setting
Layer 2.
VLANs 1 to 1005 with the SI installed or 1 to 4094 with the
EI installed.
VLAN 1.
VLAN 1.
Switchport mode dynamic desirable (supports DTP).
All ports are enabled.
None defined.
Autonegotiate.
Autonegotiate.
Flow control is set to off for receive and desired for send for
Gigabit Ethernet ports.
Disabled on all Ethernet ports. See
EtherChannels."
Disabled (not blocked). See the
section on page 22-5.
Disabled. See the "Default Storm Control Configuration"
section on page 22-2.
Disabled. See the "Configuring Protected Ports" section on
page 22-4.
Disabled. See the "Default Port Security Configuration"
section on page 22-9.
Disabled.
SFP module preferred.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring Ethernet Interfaces
Chapter 31, "Configuring
"Configuring Port Blocking"
11-9