Configuring Vlan Trunks; Trunking Overview - Cisco WS-CBS3032-DEL Software Configuration Manual

Chapter 13 Configuring VLANs

Configuring VLAN Trunks

These sections contain this conceptual information:
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Trunking Overview

A trunk is a point-to-point link between one or more Ethernet switch interfaces and another networking device
such as a router or a switch. Ethernet trunks carry the traffic of multiple VLANs over a single link, and you
can extend the VLANs across an entire network. IEEE 802.1Q is an industry-standard trunking
encapsulation.
Figure 13-2
Figure 13-2
You can configure a trunk on a single Ethernet interface or on an EtherChannel bundle. For more
information about EtherChannel, see
Tracking."
Ethernet trunk interfaces support different trunking modes (see
trunking or nontrunking or to negotiate trunking with the neighboring interface. To autonegotiate
trunking, the interfaces must be in the same VTP domain.
OL-13270-06
Trunking Overview, page 13-15
Default Layer 2 Ethernet Interface VLAN Configuration, page 13-17
Configuring an Ethernet Interface as a Trunk Port, page 13-18
Configuring Trunk Ports for Load Sharing, page 13-22
shows a network of switches that are connected by IEEE 802.1Q trunks.
Switches in an IEEE 802.1Q Trunking Environment
IEEE
802.1Q
trunk
Blade
switch
Blade
switch
VLAN1
VLAN2
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Catalyst 6500 series
switch
IEEE IEEE
802.1Q 802.1Q
trunk trunk
Blade
switch
VLAN3
VLAN1
Chapter 38, "Configuring EtherChannels and Link-State
Configuring VLAN Trunks
IEEE
802.1Q
trunk
Blade
switch
VLAN2
VLAN3
Table 13-4). You can set an interface as
13-15