DATA LOOP DETECTION
Data loop detection can include receiving, from a network controller, a forwarding rule at a designated network device, forwarding a loop-detect unit, via the designated network device, utilizing the received forwarding rule, and determining if the loop-detect unit is received by the designated network device.
1 . A method, comprising:
receiving, from a network controller, a forwarding rule at a designated network device;
forwarding a loop-detect unit, via the designated network device, utilizing the received forwarding rule; and
determining if the loop-detect unit is received by the designated network device.
2 . The method of claim 1 , comprising designating, by the network controller, a port for transferring data units to a particular destination based on the forwarding rule.
3 . The method of claim 1 , wherein forwarding the loop-detect unit includes forwarding data that includes a loop-detect media access control (MAC) address.
4 . The method of claim 3 , wherein determining if the loop-detect unit is received includes determining if a received data unit includes the loop-detect MAC address.
5 . The method of claim 1 , wherein receiving the forwarding rule includes receiving a forwarding rule set for a number of data unit transfers between host computing devices coupled to a network.
6 . The method of claim 1 , wherein the loop-detect unit includes unit information that is identical to a recently received data unit and the method includes altering the unit information to include a source address that is a loop-detect address.
7 . A non-transitory computer-readable medium storing a set of instructions executable by a processor to cause a network device to:
receive a flow match condition, wherein the flow match condition comprises a designated incoming port for a particular data unit associated with a particular sender/receiver pair;
determine an incoming port for a received data unit associated with the particular sender/receiver pair;
compare the incoming port for the received data unit to the flow match condition; and
send a message to a network controller if the incoming port is different than the designated incoming port.
8 . The medium of claim 7 , wherein the instructions to send the message to the network controller includes instructions to send the received data unit to the network controller.
9 . The medium of claim 7 , wherein the flow match condition is generated based on a designated path from a first host computing device to a second host computing device via a network that includes the network device.
10 . The medium of claim 7 , storing instructions to receive a forwarding rule for the particular data unit.
11 . The medium of claim 10 , wherein the forwarding rule includes instructions to change an out-port for the particular data unit associated with the particular sender/receiver pair to eliminate a data loop.
12 . A system for data loop detection, the system comprising:
a network controller comprising computer-readable instructions that are executed by a processing resource to:
generate a loop-detect unit comprising a loop-detect media access control (MAC) address;
send the loop-detect unit, via the network device, based on a forwarding rule;
receive status information from the network device relating to the forwarding rule; and
determine if a data loop is occurring within the network based on the status information received from the network device, wherein the status information includes the loop-detect unit.
13 . The system of claim 12 , wherein instructions to generate include instructions to generate the loop-detect unit with a particular destination address of a previously received data unit.
14 . The system of claim 12 , wherein the status information includes the forwarding rule.
15 . The system of claim 12 , wherein the forwarding rule is based on a network topology.