A method, comprising: receiving, by a device, border gateway protocol BGP data associated with a plurality of links provided in a segment routing network, wherein the segment routing network includes: a first autonomous system with a first plurality of network devices interconnected by a first portion of the plurality of links, a second autonomous system with a second plurality of network devices interconnected by a second portion of the plurality of links, and at least one inter-autonomous system link, of the plurality of links, provided between one of the first plurality of network devices and one of the second plurality of network devices; filtering, by the device, prefixes of the BGP data to identify BGP data associated with the at least one inter-autonomous system link, wherein the BGP data associated with the at least one inter-autonomous system link includes data identifying state information associated with the at least one inter-autonomous system link; the method being characterised by determining, by the device, an operational state of the at least one inter-autonomous system link based on the BGP data associated with the at least one inter-autonomous system link; and performing, by the device, one or more actions based on the operational state of the at least one inter-autonomous system link, further comprising: causing bidirectional forwarding detection BFD sessions to be established for another inter-autonomous system link of the plurality of links, wherein the other inter-autonomous system link is provided between another one of the first plurality of network devices and another one of the second plurality of network devices; receiving BFD session data associated with the other inter-autonomous system link, wherein the BFD session data associated with the other inter-autonomous system link includes data identifying session information associated with the other inter-autonomous system link; determining another operational state of the other inter-autonomous system link based on the BFD session data associated with the other inter-autonomous system link; and performing one or more additional actions based on the other operational state of the other inter-autonomous system link. receiving, by a device, border gateway protocol BGP data associated with a plurality of links provided in a segment routing network, wherein the segment routing network includes: a first autonomous system with a first plurality of network devices interconnected by a first portion of the plurality of links, a second autonomous system with a second plurality of network devices interconnected by a second portion of the plurality of links, and at least one inter-autonomous system link, of the plurality of links, provided between one of the first plurality of network devices and one of the second plurality of network devices; a first autonomous system with a first plurality of network devices interconnected by a first portion of the plurality of links, a second autonomous system with a second plurality of network devices interconnected by a second portion of the plurality of links, and at least one inter-autonomous system link, of the plurality of links, provided between one of the first plurality of network devices and one of the second plurality of network devices; filtering, by the device, prefixes of the BGP data to identify BGP data associated with the at least one inter-autonomous system link, wherein the BGP data associated with the at least one inter-autonomous system link includes data identifying state information associated with the at least one inter-autonomous system link; the method being characterised by determining, by the device, an operational state of the at least one inter-autonomous system link based on the BGP data associated with the at least one inter-autonomous system link; and performing, by the device, one or more actions based on the operational state of the at least one inter-autonomous system link, further comprising: causing bidirectional forwarding detection BFD sessions to be established for another inter-autonomous system link of the plurality of links, wherein the other inter-autonomous system link is provided between another one of the first plurality of network devices and another one of the second plurality of network devices; receiving BFD session data associated with the other inter-autonomous system link, wherein the BFD session data associated with the other inter-autonomous system link includes data identifying session information associated with the other inter-autonomous system link; determining another operational state of the other inter-autonomous system link based on the BFD session data associated with the other inter-autonomous system link; and performing one or more additional actions based on the other operational state of the other inter-autonomous system link.