Patent ID: 11949591
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A network node comprising:
a communication interface,
a processor, and
a memory storing instructions executable by the processor, whereby the network node is operative to:
receive a first echo request packet containing a first target Forwarding Equivalence Class (FEC) stack that includes an FEC associated with a Binding Segment Identifier (BSID) advertised by the network node;
in response to expiration of a Time To Live (TTL) associated with the first echo request packet, transmit a first echo reply packet to a further network node that initiated the first echo request packet, wherein the first echo reply packet includes an indication that the FEC is to be replaced by a set of FECs;
receive a second echo request packet including a second label stack and a second target FEC stack, wherein the second label stack includes the following: a label corresponding to the BSID, and at least a first FEC from the set of FECs; and
in response to expiration of a TTL associated with the second echo request packet, transmit to a downstream network node a third echo request packet based on the second echo request packet, wherein the third echo request packet includes: a third label stack associated with the set of FECs, and a third target FEC stack that includes the first FEC.