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1.. SPDX-License-Identifier: GPL-2.02 3====================4MPLS Sysfs variables5====================6 7/proc/sys/net/mpls/* Variables:8===============================9 10platform_labels - INTEGER11 Number of entries in the platform label table. It is not12 possible to configure forwarding for label values equal to or13 greater than the number of platform labels.14 15 A dense utilization of the entries in the platform label table16 is possible and expected as the platform labels are locally17 allocated.18 19 If the number of platform label table entries is set to 0 no20 label will be recognized by the kernel and mpls forwarding21 will be disabled.22 23 Reducing this value will remove all label routing entries that24 no longer fit in the table.25 26 Possible values: 0 - 104857527 28 Default: 029 30ip_ttl_propagate - BOOL31 Control whether TTL is propagated from the IPv4/IPv6 header to32 the MPLS header on imposing labels and propagated from the33 MPLS header to the IPv4/IPv6 header on popping the last label.34 35 If disabled, the MPLS transport network will appear as a36 single hop to transit traffic.37 38 * 0 - disabled / RFC 3443 [Short] Pipe Model39 * 1 - enabled / RFC 3443 Uniform Model (default)40 41default_ttl - INTEGER42 Default TTL value to use for MPLS packets where it cannot be43 propagated from an IP header, either because one isn't present44 or ip_ttl_propagate has been disabled.45 46 Possible values: 1 - 25547 48 Default: 25549 50conf/<interface>/input - BOOL51 Control whether packets can be input on this interface.52 53 If disabled, packets will be discarded without further54 processing.55 56 * 0 - disabled (default)57 * not 0 - enabled58