Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

Junos ®
OS 12.3 Ethernet Interfaces Configuration Guide
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•
unit 0 {
vlan-id 100;
}
}
802.1Q VLANs Overview on page 53
• Junos® OS Ethernet Interfaces
Guidelines for Configuring VLAN ID List-Bundled Logical Interfaces That Connect CCCs
For MX Series routers, you can bind a list of VLAN IDs to a logical interface, configure a
Layer 2 VPN routing instance or Layer 2 circuit on the logical interface, and then use the
logical interface to configure a circuit cross-connect (CCC) to another Layer 2 VPN routing
instance or Layer 2 circuit.
A CCC allows you to configure transparent connections between two circuits so that
packets from the source circuit are delivered to the destination circuit with, at most, the
Layer 2 address being changed. You configure a CCC by connecting circuit interfaces of
the same type. For more information, see Circuit and Translational Cross-Connects
Overview.
NOTE: The Junos OS supports binding of Ethernet logical interfaces to lists
of VLAN IDs on MX Series routers only. For all other routers, you can bind an
Ethernet logical interface to only a single VLAN ID or to a single range of VLAN
IDs.
The following configuration guidelines apply to bundling lists of VLAN IDs to Ethernet
logical interfaces used to configure CCCs:
• Guidelines for Configuring Physical Link-Layer Encapsulation to Support
CCCs on page 68
• Guidelines for Configuring Logical Link-Layer Encapsulation to Support CCCs on page 69
Guidelines for Configuring Physical Link-Layer Encapsulation to Support CCCs
68
To enable a physical interface to support VLAN-bundled logical interfaces that you will
use to configure a CCC, you must specify one of the following physical link-layer
encapsulation types as the value of the encapsulation statement at the [edit interfaces
interface-name] hierarchy level:
[edit interfaces interface-name]
encapsulation (extended-vlan-ccc | flexible-ethernet-services);
• extended-vlan-ccc—For Ethernet interfaces with standard TPID tagging.
• flexible-ethernet-services—For supported Gigabit Ethernet interfaces for which you
want to configure multiple per-unit Ethernet encapsulations.
For more information about configuring the encapsulation on a physical interface, see
Configuring Interface Encapsulation on Physical Interfaces.
Copyright © 2012, Juniper Networks, Inc.