Cisco Catalyst X4232 Installation And Configuration Note page 46

Configuring the Module for InterVLAN Routing
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Configuring Layer 2 Ethernet and Gigabit Ethernet Ports
The following sections briefly describe how to configure the Layer 2 Ethernet and Gigabit Ethernet
ports for interVLAN routing from the supervisor engine console. For complete information on Layer 2
port configuration, refer to the Software Configuration Guide for your switch.
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Both port speed and port duplex mode features default to auto (autonegotiation). To
Note
customize the two features, you must set the port speed to 10 or 100 before you set the port
duplex mode to half or full duplex. You cannot have one feature set to auto and the other
feature set to a fixed value.
Overview of the Layer 2 Interfaces
The port numbering for the 10/100 ports is as follows: Assuming the Layer 3 Services module resides
in slot 2, the port numbering is 2/1 and 2/2 for the internal Gigabit Ethernet ports and 2/3 through 2/34
for the external 10/100 ports. All Layer 2 ports in the Catalyst 4000 switch follow this port numbering
convention.
Setting the VTP Domain
If the Catalyst 4000 Layer 3 Services module is installed in a new Catalyst 4000 family switch, you
must set the VLAN Trunking Protocol (VTP) domain. You can configure the module to use VTP server
mode, VTP client mode, or VTP transparent mode. Refer to the Software Configuration Guide for your
switch for information about VTP. Setting the VTP domain is required to create VLANs.
VTP Server Mode
VTP server mode lets you change the VLAN configuration once and then have it propagate throughout
the network.
To configure the switch as a VTP server, perform this task in privileged mode:
Installation and Configuration Note for the Catalyst 4000 Layer 3 Services Module
46
Assign Layer 2 ports to VLANs. For more information, see the "Assigning Layer 2 Switch Ports to
a VLAN" section on page 50.
As an option, you can configure the Layer 2 ports as trunks. For more information, see the
"Configuring 802.1Q Layer 2 VLAN Trunks" section on page 51.
Optionally, configure the Layer 2 ports as an EtherChannel. For more information, see the
"Configuring EtherChannel" section on page 53.
Overview of the Layer 2 Interfaces, page 46
Setting the VTP Domain, page 46
Setting the Layer 2 Port Speed, page 48
Setting the Layer 2 Port Duplex Mode, page 49
Configuring VLANs, page 49
Assigning Layer 2 Switch Ports to a VLAN, page 50
Configuring 802.1Q Layer 2 VLAN Trunks, page 51
Configuring EtherChannel, page 53
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