Re: OSPF Authentication Methods - (3)

From: Scott Morris <swm_at_emanon.com>
Date: Sun, 22 May 2011 21:05:18 -0400

 Ahhh.... But that implies lack of foresight! My cabinet holds
MULTIPLE redundant glasses! Designed BEFORE drinking! hehehehehe.

Scott Morris, CCIEx4 (R&S/ISP-Dial/Security/Service Provider) #4713,

CCDE #2009::D, JNCIE-M #153, JNCIE-ER #102, CISSP, et al.

CCSI #21903, JNCI-M, JNCI-ER

swm_at_emanon.com

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

On 5/22/11 1:09 PM, Jason Boyers wrote:

  Of course, if you were building a fully redundant glass system, you
  would add another glass.
  
  Jason Boyers - CCIE #26024 (Wireless)
  Technical Instructor - IPexpert jboyers_at_ipexpert.com
  On May 21, 2011, at 3:33 PM, Scott Morris <swm_at_emanon.com> wrote:

    And when you reach 80% full, you simply get a bigger glass. ;)

    *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
    
    CCDE #2009::D, JNCIE-M #153, JNCIE-ER #102, CISSP, et al.
    
    CCSI #21903, JNCI-M, JNCI-ER
    swm_at_emanon.com
    
    Knowledge is power.
    
    Power corrupts.
    
    Study hard and be Eeeeviiiil......

    On 5/20/11 3:05 PM, Max Pierson wrote:

      My job title has always been engineer, so my thinking is the glass is twice
      the size it needs to be :)
      
      On Fri, May 20, 2011 at 2:00 PM, Ronnie Angello <ronnie.angello_at_gmail.com> wrote:

        Is the glass half empty or half full?
        
        On Fri, May 20, 2011 at 2:45 PM, Marko Milivojevic < markom_at_ipexpert.com

          wrote:
          It's a perfectly valid point and I stated that in my first sentence.
          It depends on the point of view. For me "no authentication" means that
          "no information pertaining to the presence or absence of
          authentication is present". In OSPF, when using NULL authentication,
          information that this authentication type is used is present, hence my
          agreement with 3 methods.
          
          In large scheme of things, it's not really that relevant is
          authentication type 0 an authentication or not, as long as we know
          it's there.
          
          --
          Marko Milivojevic - CCIE #18427
          Senior Technical Instructor - IPexpert
          
          FREE CCIE training: http://bit.ly/vLecture
          Mailto: markom_at_ipexpert.com Telephone: +1.810.326.1444
          Web: http://www.ipexpert.com/
          On Fri, May 20, 2011 at 11:40, Narbik Kocharians <narbikk_at_gmail.com> wrote:

            I always saw it as a two step process as well, you enable

        authentication

          and

            then, apply. When you enable authentication it needs to be enabled on

          both

            ends of the link. So i guess we are saying the same thing.
            
            But i still have problems with OSPF having three authentication

        methods.

            Especially when they say type "0" is one type of authentication and

        when

          you

            look it up, it states that "0" means NO Authentication.
            
            But i see everyones point here.
            
            On Fri, May 20, 2011 at 11:07 AM, Marko Milivojevic <

        markom_at_ipexpert.com

            wrote:

              On Fri, May 20, 2011 at 10:50, Narbik Kocharians <narbikk_at_gmail.com> wrote:

                So OSPF can not work without authentication.

              If you consider "null authentication" as "no authentication", then it
              can. However, if you consider it as authentication, then no, it can't
              :-).
              
              I always approached OSPF authentication as a two-stage authentication
              - one stage is type-match, the other one is password match. From that
              perspective, I would agree with the statement above that OSPF cannot
              work without the authentication, as the first-stage is always present
              in the packets.
              
              --
              Marko Milivojevic - CCIE #18427
              Senior Technical Instructor - IPexpert
              
              FREE CCIE training: http://bit.ly/vLecture
              Mailto: markom_at_ipexpert.com Telephone: +1.810.326.1444
              Web: http://www.ipexpert.com/

            --
            Narbik Kocharians
            CCSI#30832, CCIE# 12410 (R&S, SP, Security) www.MicronicsTraining.com Sr. Technical Instructor
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Received on Sun May 22 2011 - 21:05:18 ART

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