Resilient routing for link flap and failure

A host node of a communication network, the host node comprising:

• a Network Interface Card (NIC) comprising a control circuit controlling operation of the NIC, wherein the control circuit of the NIC causes the NIC to:
• conduct, through a switch of the communication network, electronic communications between the host node and a plurality of nodes of a communication network in a first mode;
• detect a link failure to a failed node of the plurality of nodes;
• and
• in response to detecting the link failure of the failed node, cause the electronic communications between the host node and the plurality of nodes to be conducted in a second mode.

A communication network comprising:

• a switch;
• a plurality of nodes coupled with the switch;
• and
• a host node coupled with the switch, the host node comprising a Network Interface Card (NIC) comprising a control circuit controlling operation of the NIC, wherein the control circuit of the NIC causes the NIC to:
• conduct, through the switch, electronic communications between the host node and the plurality of nodes in a first mode;
• detect a link failure to a failed node of the plurality of nodes;
• and
• in response to detecting the link failure of the failed node, cause, the electronic communications between the host node and the plurality of nodes to be conducted in a second mode.