1.. SPDX-License-Identifier: GPL-2.0 2 3==================== 4MPLS Sysfs variables 5==================== 6 7/proc/sys/net/mpls/* Variables: 8=============================== 9 10platform_labels - INTEGER 11 Number of entries in the platform label table. It is not 12 possible to configure forwarding for label values equal to or 13 greater than the number of platform labels. 14 15 A dense utilization of the entries in the platform label table 16 is possible and expected as the platform labels are locally 17 allocated. 18 19 If the number of platform label table entries is set to 0 no 20 label will be recognized by the kernel and mpls forwarding 21 will be disabled. 22 23 Reducing this value will remove all label routing entries that 24 no longer fit in the table. 25 26 Possible values: 0 - 1048575 27 28 Default: 0 29 30ip_ttl_propagate - BOOL 31 Control whether TTL is propagated from the IPv4/IPv6 header to 32 the MPLS header on imposing labels and propagated from the 33 MPLS header to the IPv4/IPv6 header on popping the last label. 34 35 If disabled, the MPLS transport network will appear as a 36 single hop to transit traffic. 37 38 * 0 - disabled / RFC 3443 [Short] Pipe Model 39 * 1 - enabled / RFC 3443 Uniform Model (default) 40 41default_ttl - INTEGER 42 Default TTL value to use for MPLS packets where it cannot be 43 propagated from an IP header, either because one isn't present 44 or ip_ttl_propagate has been disabled. 45 46 Possible values: 1 - 255 47 48 Default: 255 49 50conf/<interface>/input - BOOL 51 Control whether packets can be input on this interface. 52 53 If disabled, packets will be discarded without further 54 processing. 55 56 * 0 - disabled (default) 57 * not 0 - enabled 58