Cisco Catalyst 2900 Series XL Especificaciones Pagina 221

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 322
  • Tabla de contenidos
  • SOLUCIÓN DE PROBLEMAS
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 220
8-29
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
78-6511-06
Chapter 8 Configuring VLANs
How VLAN Trunks Work
Changing the Pruning-Eligible List
The pruning-eligible list applies only to trunk ports. Each trunk port has its own eligibility list. VTP
Pruning must be enabled for this procedure to take effect. The Enabling VTP Pruning section on
page 8-18 describes how to enable VTP pruning.
Beginning in privileged EXEC mode, follow these steps to remove VLANs from the pruning-eligible
list on a trunk port:
Configuring the Native VLAN for Untagged Traffic
A trunk port configured with 802.1Q tagging can receive both tagged and untagged traffic. By default,
the switch forwards untagged traffic with the native VLAN configured for the port. The native VLAN
is VLAN 1 by default. For information about 802.1Q configuration issues, see the IEEE 802.1Q
Configuration Considerations section on page 8-25.
Note The native VLAN can be assigned any VLAN ID, and it is not dependent on the management VLAN.
Beginning in privileged EXEC mode, follow these steps to configure the native VLAN on an 802.1Q
trunk:
If a packet has a VLAN ID the same as the outgoing port native VLAN ID, the packet is transmitted
untagged; otherwise, the switch transmits the packet with a tag.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Enter interface configuration mode, and select the trunk port for which
VLANs should be pruned.
Step 3
switchport trunk pruning vlan
remove vlan-id
Enter the VLANs to be removed from the pruning-eligible list.
Separate nonconsecutive VLAN IDs with a comma and no spaces; use a
hyphen to designate a range of IDs. Valid IDs are from 2 to 1001.
VLANs that are pruning-ineligible receive flooded traffic.
Step 4
exit Return to privileged EXEC mode.
Step 5
show interface interface-id
switchport
Verify your settings.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Enter interface configuration mode, and define the interface that is
configured as the 802.1Q trunk.
Step 3
switchport trunk native vlan vlan-id Configure the VLAN that is sending and receiving untagged traffic on the
trunk port.
Valid IDs are from 1 to 1001.
Step 4
show interface interface-id
switchport
Verify your settings.
Vista de pagina 220
1 2 ... 216 217 218 219 220 221 222 223 224 225 226 ... 321 322

Comentarios a estos manuales

Sin comentarios