Rerouting multicast traffic in response to detecting imminent network disruption
First Claim
1. A method comprising:
- detecting an imminent topology change;
identifying a new multicast distribution tree for a multicast group, in response to detection of the imminent topology change;
sending a join message towards a root of the new multicast distribution tree;
continuing to forward multicast traffic addressed to the multicast group via a current multicast distribution tree, subsequent to sending the join message.
1 Assignment
0 Petitions
Accused Products
Abstract
Various systems and method for rerouting multicast traffic in response to detecting imminent network disruption are disclosed. One method involves detecting an imminent topology change and, in response, identifying a new multicast distribution tree for a multicast group. A join message for the multicast group is then sent towards a root of the new multicast distribution tree. Multicast traffic addressed to the multicast group continues to be forwarded via the current multicast distribution tree, subsequent to sending the join message. The multicast traffic is not forwarded via the new multicast distribution tree until one or more multicast data packets have been received via the new multicast distribution tree.
-
Citations
21 Claims
-
1. A method comprising:
-
detecting an imminent topology change;
identifying a new multicast distribution tree for a multicast group, in response to detection of the imminent topology change;
sending a join message towards a root of the new multicast distribution tree;
continuing to forward multicast traffic addressed to the multicast group via a current multicast distribution tree, subsequent to sending the join message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A network device comprising:
-
multicast state information comprising multicast routing information and multicast forwarding information;
a control module coupled to access the multicast state information, wherein the control module is configured to;
update the multicast routing information to identify a new multicast distribution tree for a multicast group, in response to detection of an imminent topology change; and
inhibit updating the multicast forwarding information to identify the new multicast distribution tree, until one or more multicast data packets are received via the new multicast distribution tree. - View Dependent Claims (11, 12, 13)
-
-
14. A system comprising:
a first network device, wherein the first network device is configured to;
identify a new multicast distribution tree for a multicast group, in response to detection of an imminent topology change;
send a join message towards a root of the new multicast distribution tree;
continue to forward multicast traffic addressed to the multicast group via a current multicast distribution tree, subsequent to sending the join message. - View Dependent Claims (15, 16, 17, 18)
-
19. A system comprising:
-
means for identifying a new multicast distribution tree for a multicast group, in response to detection of an imminent topology change;
means for sending a join message towards a root of the new multicast distribution tree;
means for continuing to forward multicast traffic addressed to the multicast group via a current multicast distribution tree, subsequent to sending the join message. - View Dependent Claims (20)
-
-
21. (canceled)
Specification