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speed on page 1728•
Configuring Logical Tunnel Interfaces
Logical tunnel (lt-) interfaces provide quite different services depending on the host
router:
•
On M Series, MX Series, and T Series routers, logical tunnel interfaces allow you to
connect logical systems, virtual routers, or VPN instances. M Series and T Series routers
must be equipped with a Tunnel Services PIC or an Adaptive Services Module (only
available on M7i routers). MX Series routers must be equipped with a Trio MPC/MIC
module. For more information about connecting these applications, see the Junos OS
VPNs Library for Routing Devices.
•
On SRX Series Services Gateways, the logical tunnel interface is used to interconnect
logical systems. See the Junos OS Logical Systems Configuration Guide for Security
Devices.
•
On ACX Series routers, logical tunnel interfaces allow you to connect a bridge domain
and a pseudowire. Logical systems are not supported on ACX Series routers.
For M Series, MX Series, and T Series routers, see the following section:
•
Connecting Logical Systems on page 136
Connecting Logical Systems
To connect two logical systems, you configure a logical tunnel interface on both logical
systems. Then you configure a peer relationship between the logical tunnel interfaces,
thus creating a point-to-point connection.
To configure a point-to-point connection between two logical systems, configure the
logical tunnel interface by including the lt-fpc/pic/port statement:
lt-fpc/pic/port {
unit logical-unit-number {
encapsulation encapsulation;
peer-unit unit-number; # peering logical system unit number
dlci dlci-number;
family (inet | inet6 | iso | mpls);
}
}
You can include this statement at the following hierarchy levels:
•
[edit interfaces]
•
[edit logical-systems logical-system-name interfaces]
Copyright © 2017, Juniper Networks, Inc.136
ACX Series Universal Access Router Configuration Guide
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