A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Enhancements to OSPF Graceful Restart for Heterogeneous Environments
Author(s) : S. Kini
Filename : draft-kini-ospf-gr-enhance-00.txt
Pages : 16
Date : 2004-1-23
Reliability is a fundamental concern for the network. As a solution
to improve network stability, the non-stop forwarding paradigm
depends on protocol recovery based on graceful restart techniques.
One of the proposed graceful restart techniques for [OSPF], a widely
deployed IGP, is described in [OSPF-GR]. This technique has a
limitation of not being backward compatible, in the sense that if a
neighbor does not support the helper mode described in [OSPF-GR],
the graceful-restart procedure will fail (i.e., revert to normal
restart). For large multi-vendor networks, this scenario is fairly
common. In this draft, we describe techniques that can achieve OSPF
graceful restart even if a neighboring router does not support the
helper-mode of [OSPF-GR].
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