data plane
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This document describes a simple and efficient mechanism that can be
used to detect data plane failures in MPLS Label Switched Paths
(LSPs ...
... transporting the echo reply. The first part aims at providing enough
information to check correct operation of the data plane, as well as
a mechanism to verify the data plane against the control plane ...
... information to check correct operation of the data plane, as well as
a mechanism to verify the data plane against the control plane, and
thereby localize faults. The second part suggests two methods ...
... MPLS echo requests are meant primarily to validate the data plane,
and secondarily to verify the data plane against the control plane ...
... validate the data plane,
and secondarily to verify the data plane against the control plane.
Mechanisms to check the control plane ...
... LSR also returns further information that helps
check the control plane against the data plane, i.e., that forwarding
matches what the routing protocols determined as the path.
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... LSP ping needs to diagnose situations
where the control and data planes are out of sync. It performs this
by routing an MPLS echo request ...
... receiver is expected to
verify that the control plane and data plane are both healthy (for
the FEC Stack being pinged) and that the two planes are in sync. The
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... their workload. The second is obfuscating the state of the MPLS data
plane liveness by spoofing, hijacking, replaying, or otherwise
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... requests or replies; however, if these messages are indeed hijacked,
LSP ping will report that the data plane is not working as it should.
It does not seem vital (at this point) to secure the data carried in
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... state of
the MPLS data plane may be considered confidential by some.
Implementations SHOULD, however, provide a means of filtering the
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