A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Improved Assert in PIM-SM
Author(s) : V. Hemige, et al.
Filename : draft-hemige-pim-improved-assert-00.txt
Pages : 8
Date : 2005-10-21
In [PIM-SM], assert procedures are triggered by data-plane
interaction with the control-plane when traffic arrives on an
outgoing interface. There are several disadvantages with this in that
duplicate traffic is forwarded downstream until an assert winner is
elected and seen by all routers on the LAN; such dependence on the
data-plane to build control-plane state does not scale well. When
[PIM-SM] is used to setup P2MP LSP trees as in [SURESH-P2MP], it is
not always possible to determine if traffic arrived on an outbound
interface . This draft proposes mechanisms to trigger assert
completely in the control plane by reacting to Joins sent to another
router on a LAN. These procedures are essential when it is not
possible to determine if traffic arrived on an outbound interface. It
also helps completely remove the dependency on data-plane to trigger
asserts and eliminates duplicate traffic resulting from assert
scenarios.
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