Host Router Support for OSPFv2
2019
The OSPFv2 specifies an SPF algorithm that identifies transit vertices
based on their adjacencies. Therefore, OSPFv2 does not have a
mechanism to prevent traffic transiting a participating node if it is
a transit vertex in the only existing or shortest path to the
destination. The use of metrics to make the node undesirable can only
help to repel traffic if an alternative better route exists. This
document defines the Host-bit functionality to prevent other OSPFv2
routers from using the router for transit traffic in OSPFv2 routing
domains. This document updates the [RFC2328] by assigning a new bit
(Host-bit) in the OSPF Router-LSA bit registry. If the Host- bit is
set, the calculation of the shortest-path tree for an area, as
described in [RFC2328], is modified by including a new check to verify
that transit vertices have the Host-bit clear.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI