Embodiments of the present application provide a
message forwarding method,
system, storage medium and electronic device. The method comprises: a source node located in a first SR-MPLS domain sending a message to a destination node located in a second SR-MPLS domain based on a segment routing policy (SR-Policy), wherein a BSID in the form of an MPLS
label is included in an SR-Policy segment
list of the message, and is used for the message to pass through an SRv6 domain located between the first SR-MPLS domain and the second SR-MPLS domain; a first boundary node, after receiving the message, replacing the BSID in the form of the MPLS
label with an SRv6-Policy whose destination address is a second boundary node, and forwarding the message based on the SRv6-Policy; the second boundary node, after receiving the message, decapsulating an IPv6 header and an extension header of the message according to behavior indication information carried in the SR-Policy, and querying an MPLS
label forwarding table according to the MPLS label to forward the message in the second SR-MPLS domain until the message is forwarded to the destination node. The present application realizes
message forwarding across SR-MPLS domains and SRv6 domains.