enable mpls php

When enabled, PHP is requested on all LSPs advertised over that VLAN (Virtual LAN) for which the switch is the egress LSR.

enable mpls php [{vlan} vlan_name | vlan all]


Enables penultimate hop popping (PHP) on the specified VLAN.

Syntax Description

vlan Enables PHP for one or more specific VLANs.
vlan_name Enables PHP on the specified VLAN.
vlan all Enables PHP for all VLANs that have been added to MPLS (Multiprotocol Label Switching).



Usage Guidelines

Penultimate hop popping is requested by assigning the Implicit Null Label in an advertised mapping. Extreme's MPLS implementation always performs penultimate hop popping when requested to do so by a peer LSR. When the all VLANs option is selected, PHP is enabled on all configured VLANs that have been added to MPLS.



ExtremeWare always used the Implicit NULL Label in conjunction with routes exported into OSPF (Open Shortest Path First), regardless of the setting of the PHP configuration parameter. This method of operation is not utilized in ExtremeXOS.


The following command enables penultimate hop popping (PHP) on the specified VLAN:

enable mpls php vlan vlan1


This command was first available in ExtremeXOS 11.6.

Platform Availability

This command is available only on the platforms that support MPLS as described in the ExtremeXOS 22.2 Feature License Requirements document.