From: Wright, Jeremy (JA_WRIGHT@xxxxxxxxxxxx)
Date: Tue Mar 26 2002 - 11:32:32 GMT-3
i may be wrong with this..but isnt the P bit used to control if type 7 is
converted into type 5 to go into the backbone by the abr not vica versa?
-----Original Message-----
From: Peter van Oene [mailto:pvo@usermail.com]
Sent: Tuesday, March 26, 2002 7:55 AM
To: 'ccielab@groupstudy.com'
Subject: Re: OSPF P bit
more research indicates that the p bit can be used much like the IS-IS
up/down bit to control the leaking of backbone information into an NSSA
area. Specifically, assuming all nssa routers set the P bit to clear by
default, should one with to leak 5's into an NSSA area as 7's, setting the
P bit will ensure that they do not loop back into the backbone as 5's
again. Pat Murphy has some rather recent drafts in this regard, however it
is likely beyond the scope of the ccie lab.
At 03:01 PM 3/25/2002 -0500, Peter van Oene wrote:
>You'd have to poll some coders, but I don't believe the P bit is currently
>being used. I believe that Cisco and others simply translate by default
>unless told via configuration to do otherwise and that they do not
>actively check the setting of the P bit.
>
>I'm ready and open to be proven wrong here :)
>
>Pete
>
>
>At 12:54 PM 3/25/2002 -0600, Wright, Jeremy wrote:
>>how do you determine if the asbr has set the P bit to 1 on the type 7 lsa
>>header in order for the abr to translate the type 7 lsa to type 5 lsa into
>>the other areas?
>>
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>>
>>************************
>> Jeremy Wright
>> Network Analyst
>> Archer Daniels Midland
>> ja_wright@admworld.com
>> (217)451-4063
>>
>>************************
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