US Patent No. 9,049,030

METHODS AND APPARATUS FOR EFFICIENT MULTICAST


Patent No. 9,049,030
Issue Date June 02, 2015
Title Methods And Apparatus For Efficient Multicast
Inventorship Pranay K. Pogde, Sunnyvale, CA (US)
James Murphy, Alameda, CA (US)
Abhijit Choudhury, Cupertino, CA (US)
Raghavendra Mallya, Cupertino, CA (US)
Sandeep Bajaj, Fremont, CA (US)
Bharani Chadalavada, Sunnyvale, CA (US)
Assignee Juniper Networks, Inc., Sunnyvale, CA (US)

Claim of US Patent No. 9,049,030

1. An apparatus, comprising: a core network node configured to associate with a native multicast group a first client device
that is associated with a first virtual local area network (VLAN) and operatively coupled to the core network node via a first
access network node and an aggregation network node, the core network node configured to associate with the native multicast
group a second client device that is associated with a second VLAN and operatively coupled to the core network node via a
second access network node and the aggregation network node, the core network node configured to define a multicast VLAN including
the first VLAN and the second VLAN, the core network node configured to receive a multicast data unit associated with the
native multicast group, the core network node configured to define a first instance of the multicast data unit for the multicast
VLAN, the core network node configured to send the first instance of the multicast data unit to the aggregation network node
via a multicast tunnel and such that the aggregation network node (1) defines, based on the first instance of the multicast
data unit, a second instance of the multicast data unit and a third instance of the multicast data unit, (2) sends the second
instance of the multicast data unit to the first access network node based on the first client device being associated with
the first VLAN that is a member of the multicast VLAN, and (3) sends the third instance of the multicast data unit to the
second access network node based on the second client device being associated with the second VLAN that is a member of the
multicast VLAN.