Title:
Design and Evaluation of Router-Supported and End-to-End Multicast Receiver-Based Scoping Protocols
Design and Evaluation of Router-Supported and End-to-End Multicast Receiver-Based Scoping Protocols
Author(s)
Ammar, Mostafa H.
Clay, Lenitra M.
Clay, Lenitra M.
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Abstract
IP multicasting allows a source to define a multicast group address and
receivers can dynamically join and leave this group. Currently the
propagation of multicast packets is controlled by two scoping methods: TTL
scoping and administrative scoping. Both of these approaches require the
source to control the scope of the multicast. In this paper we explore two
receiver-based scoping protocols. Receiver-based scoping allows a receiver
to place conditions on its multicast join that must be met in order to join
successfully and remain a member of the multicast group. Such a scoping
mechanism would be useful in environments where the receiver incurs a cost
for its membership of the multicast group. In this paper we discuss
receiver-based scoping and its design goals. In order to perform
receiver-based scoping a receiver needs information about the shape of the
multicast tree. We describe two receiver-based scoping approaches to
obtaining this information: router-supported and end-to-end. The
router-supported approaches requires state to be maintained in routers while
the end-to-end approach uses the multicast traceroute tool and does not
require state maintenance by the routers. We evaluate the performance of
these approaches in terms of their accuracy, bandwidth overhead and state
requirements.
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Date Issued
1999
Extent
255989 bytes
Resource Type
Text
Resource Subtype
Technical Report