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anchor-point (Pseudowire Subscriber Interfaces)

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 13.1.

Description

Specify the anchor-point, a logical tunnel (lt) interface that identifies the logical tunnel interface that terminates the MPLS pseudowire tunnel at the access node. The other end of the tunnel terminates on the pseudowire subscriber logical interface, which is configured on an MX Series router that hosts subscriber management and enables you to perform subscriber management services at the interface.

The pseudowire is a virtual device that is stacked above the logical tunnel anchor point on the physical interface (the IFD), and supports a circuit-oriented Layer 2 protocol (either Layer 2 VPN or Layer 2 circuit). The Layer 2 protocol provides the transport and service logical interfaces, and supports the protocol family (IPv4, IPv6, or PPPoE).

Note

You cannot dynamically change an anchor point that has active pseudowire devices stacked above it. If you need to change such an anchor point, you must perform the following steps:

  1. Deactivate the stacked pseudowires and commit. This may require bringing down any subscribers using the pseudowires.
  2. Change the anchor on the deactivated pseudowire and commit.
  3. Reactivate the stacked pseudowires and commit.
Note

You cannot disable the underlying logical tunnel (lt) interface or redundant logical tunnel (rlt) interface when a pseudowire is anchored on that interface. If you want to disable the underlying interface, you must first deactivate the pseudowire.

  1. Deactivate the stacked pseudowires and commit. This may require bringing down any subscribers using the pseudowires.
  2. Disable the underlying interface and commit.

Options

lt-deviceAn lt device in the format lt-fpc/pic/port

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.