Juniper Networks, Inc.

Arista Networks, Inc.

Soumen Biswas

Anish Mehta

Sadiq Shaikh

Jeevan Madhu Kamisetty

A method and system for processing spanning tree protocol (STP) state in a multichassis link aggregation (MLAG) domain. More specifically, a pair of MLAG peers in the MLAG domain receive and transmit bridge protocol data units (BPDUs) in order to update a spanning tree used to implement the STP. The pair of MLAG peers includes an active MLAG peer and a standby MLAG peer operatively connected via a MLAG peer link. Further, processing of STP state towards updating the spanning tree is held accountable by the active MLAG peer until it experiences failover, after which responsibility for processing the STP state transfers to the standby MLAG peer. Duplicate BPDUs received by the MLAG domain are tracked to refresh a retention period for the STP state retained by the MLAG domain, and thus, prevent the premature discarding of STP state.

Method and system for processing spanning tree protocol (STP) state in a multichassis link aggregation (MLAG) domain

A network node that includes a memory to store a multicast forwarding table that contains entries that govern how multicast traffic is to be forwarded from a multicast virtual local area network (MVLAN) associated with the network node, to receiver VLANs associated with the network node, where each entry includes a multicast group, that is associated with a group of ports on the multicast VLAN via which the multicast traffic is received, and information associated with the receiver VLANs to which the received multicast traffic is to be sent. The network node also includes a processor to receive multicast traffic associated with a particular multicast group, via a particular port on the multicast VLAN; perform, using the multicast forwarding table, a look up operation, based on the particular multicast group, to determine to which of the receiver VLANs the multicast traffic is to be sent; and transmit the multicast traffic, associated with the particular multicast group, to user devices, via the receiver VLANs, based on a determination that the entry, associated with the particular multicast group, includes information associated with the receiver VLANs.

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San Jose, CA, United States of America

Soumen Biswas