Default Layer 2 Ethernet Interface Configuration - Cisco WS-C3550-12G Software Configuration Manual

Chapter 8 Configuring Interface Characteristics

Default Layer 2 Ethernet Interface Configuration

Table 8-1
parameters listed in the table, see
controlling traffic to the port, see
Table 8-1
Feature
Operating mode
Allowed VLAN range
Default VLAN (for access ports)
Native VLAN (for 802.1Q trunks) VLAN 1.
VLAN trunking
Port enable state
Port description
Speed
Duplex mode
Flow control
EtherChannel (PAgP)
Port blocking (unknown multicast
and unknown unicast traffic)
Broadcast, multicast, and unicast
storm control
Protected port
Port security
Port Fast
78-11194-03
shows the Layer 2 Ethernet interface default configuration. For more details on the VLAN
Chapter 9, "Creating and Maintaining VLANs."
Chapter 12, "Configuring Port-Based Traffic Control."
Default Layer 2 Ethernet Interface Configuration
Default Setting
Layer 2 or switching mode (switchport command).
Routing mode (no switchport command) is only an option
Note
when the enhanced multilayer software image is installed.
All Catalyst 3550 Gigabit Ethernet switches ship with the
EMI installed. Catalyst 3550 Fast Ethernet switches can be
shipped with either SMI or EMI pre-installed. You can order
the Enhanced Multilayer Software Image Upgrade kit to
upgrade Catalyst 3550 Fast Ethernet switches from the SMI
to the EMI.
VLANs 1 – 1005.
VLAN 1.
Switchport mode dynamic desirable (supports DTP).
All ports are enabled.
None defined.
Autonegotiate.
Autonegotiate.
Flow control set to off for receive and desired for send for
10/100/1000 Mb/s. For 10/100 Mb/s ports, send is always off.
Disabled on all Ethernet ports. See
EtherChannel."
Disabled (not blocked). See the
section on page 12-6.
Disabled. See the "Default Storm Control Configuration" section
on page 12-3.
Disabled. See the "Configuring Protected Ports" section on
page 12-5.
Disabled. See the "Default Port Security Configuration" section
on page 12-9.
Disabled.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Layer 2 Interfaces
For details on
Chapter 21, "Configuring
"Configuring Port Blocking"
8-13