MPLS Sysfs variables¶
/proc/sys/net/mpls/* Variables:¶
- platform_labels - INTEGER
- Number of entries in the platform label table. It is not possible to configure forwarding for label values equal to or greater than the number of platform labels. - A dense utilization of the entries in the platform label table is possible and expected as the platform labels are locally allocated. - If the number of platform label table entries is set to 0 no label will be recognized by the kernel and mpls forwarding will be disabled. - Reducing this value will remove all label routing entries that no longer fit in the table. - Possible values: 0 - 1048575 - Default: 0 
- ip_ttl_propagate - BOOL
- Control whether TTL is propagated from the IPv4/IPv6 header to the MPLS header on imposing labels and propagated from the MPLS header to the IPv4/IPv6 header on popping the last label. - If disabled, the MPLS transport network will appear as a single hop to transit traffic. - 0 - disabled / RFC 3443 [Short] Pipe Model 
- 1 - enabled / RFC 3443 Uniform Model (default) 
 
- default_ttl - INTEGER
- Default TTL value to use for MPLS packets where it cannot be propagated from an IP header, either because one isn’t present or ip_ttl_propagate has been disabled. - Possible values: 1 - 255 - Default: 255 
- conf/<interface>/input - BOOL
- Control whether packets can be input on this interface. - If disabled, packets will be discarded without further processing. - 0 - disabled (default) 
- not 0 - enabled