[GTER] Uso de IPv4 nos enlaces ponto a ponto

[Danton Nunes]

Pessoal,

A RFC6814 de 2012 tem o interessante título "Applicability Statement for 
RFC 2544: Use on Production Networks Considered Harmful"

Acho bom dar uma lida nos argumentos lá levantados, diz a seção 5:

5.  Advisory on RFC 2544 Methods in Production Networks

    The tests in [RFC2544] were designed to measure the performance of
    network devices, not of networks, and certainly not production
    networks carrying user traffic on shared resources.  There will be
    undesirable consequences when applying these methods outside the
    isolated test environment.

    One negative consequence stems from reliance on frame loss as an
    indicator of resource exhaustion in [RFC2544] methods.  In practice,
    link-layer and physical-layer errors prevent production networks from
    operating loss-free.  The [RFC2544] methods will not correctly assess
    Throughput when loss from uncontrolled sources is present.  Frame
    loss occurring at the SLA levels of some networks could affect every
    iteration of Throughput testing (when each step includes sufficient
    packets to experience facility-related loss).  Flawed results waste
    the time and resources of the testing service user and of the service
    provider when called to dispute the measurement.  These are
    additional examples of harm that compliance with this advisory should
    help to avoid.  See Appendix A for an example.

    The methods described in [RFC2544] are intended to generate traffic
    that overloads network device resources in order to assess their
    capacity.  Overload of shared resources would likely be harmful to
    user traffic performance on a production network.  These tests MUST
    NOT be used on production networks and as discussed above.  The tests
    will not produce a reliable or accurate benchmarking result on a
    production network.

    [RFC2544] methods have never been validated on a network path, even
    when that path is not part of a production network and carrying no
    other traffic.  It is unknown whether the tests can be used to
    measure valid and reliable performance of a multi-device, multi-
    network path.  It is possible that some of the tests may prove valid
    in some path scenarios, but that work has not been done or has not
    been shared with the IETF community.  Thus, such testing is
    contraindicated by the BMWG.

-- Danton