Use this command to enable the propagation of TTL from IPv4 and IPv6 headers to the MPLS label.
| propagate-ttl | (Optional) Specifies that TTL from IP/IPv6 header to MPLS label should be propagated. |
| forwarded | (Optional) Specifies that TTL should be propagated only for forwarded packets. |
| local | (Optional) Specifies that TTL should be propagated only for local packets. |
TTL from the IPv4 and IPv6 headers is propagated to the MPLS label.
Global router or named VRF global configuration mode configuration mode.
The “no” form of this command disables propagation of TTL from the IPv4 and IPv6 headers to the MPLS label.
A change in the MPLS TTL configuration requires a reset of the MPLS/LDP session. Use the no mpls ip command followed by the mpls ip command to reset the MPLS session. Use the mpls label-protocol-ldp command to re-enable the LDP session.
This example shows how to disable propagation of the IPv4 and IPv6 header TTL to the MPLS label and reset the MPLS/LDP session:
System(rw)->configure System(su-config)->no mpls ip propagate-ttl System(su-config)->no mpls ip System(su-config)->mpls ip System(su-config)->mpls label-protocol-ldp ipv4 System(su-config)->
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