This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC2026. Note that other groups may also distribute working documents as Internet Drafts.
Internet Drafts are draft documents valid for a maximum of six months.
Internet Drafts may be updated, replaced, or obsoleted by other documents at any time. In some cases, it is desirable not to route transit traffic via a specific OSPF router. This memo describes a backward- compatible technique that may be used by OSPF implementations to advertise unavailability to forward transit traffic or to lower the preference level for the paths through such a router. 1 Motivation Retana, et al. In some situations, it may be advantageous to inform routers in a network not to use a specific router as a transit point, but still route to it.