Re: OSPF null authenication VS no ospf authentication

From: shiran guez (shiranp3@gmail.com)
Date: Sat Oct 13 2007 - 15:51:19 ART


Moy Standards Track [Page 226]

RFC 2328 OSPF Version 2 April 1998

D. Authentication

    All OSPF protocol exchanges are authenticated. The OSPF packet
    header (see Section A.3.1) includes an authentication type field,
    and 64-bits of data for use by the appropriate authentication scheme
    (determined by the type field).

    The authentication type is configurable on a per-interface (or
    equivalently, on a per-network/subnet) basis. Additional
    authentication data is also configurable on a per-interface basis.

    Authentication types 0, 1 and 2 are defined by this specification.
    All other authentication types are reserved for definition by the
    IANA (iana@ISI.EDU). The current list of authentication types is
    described below in Table 20.

                  AuType Description
                  ___________________________________________
                  0 Null authentication
                  1 Simple password
                  2 Cryptographic authentication
                  All others Reserved for assignment by the
                               IANA (iana@ISI.EDU)

On 10/13/07, shiran guez <shiranp3@gmail.com> wrote:
>
> if you look into the RFC then you will see that the OSPF always use
> Authentication and the default type is Null so there is no difference, if
> you say that the Authentication is Null or you live it with out pointing it
> both are the same.
>
> On 10/13/07, Julio Carrasco <julio.carrasco@ya.com> wrote:
> >
> > Hello group,
> >
> > Does you know what is the diference between configuring OSPF null
> > authentication on an interface, and no configurin any authentication
> > method ?
> >
> > Thank you,
> > Julio.
> >
> > _______________________________________________________________________
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>
> --
> Shiran Guez
> MCSE CCNP NCE1
> http://cciep3.blogspot.com
> http://www.linkedin.com/in/cciep3

-- 
Shiran Guez
MCSE CCNP NCE1
http://cciep3.blogspot.com
http://www.linkedin.com/in/cciep3


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