From: Nigel Taylor (nigel_taylor@xxxxxxxxxxx)
Date: Thu Jan 25 2001 - 04:03:53 GMT-3
A stage we all must go through I'm afraid. This question is to all the
group CCIE's..
Will passing the lab guarantee no more of these occurrences :-)
ChucK L. proclaimed.......
> I find myself more than I care entering 0.0.0.0 as a subnet mask and
> 255.255.255.240 as a wildcard mask. Is this a stage I am going through as
I
> pound routers more and more in my prep?
Nigel...
----- Original Message -----
From: Chuck Larrieu <chuck@cl.cncdsl.com>
To: Les Hardin <hardinl@bah.com>; <ccielab@groupstudy.com>
Sent: Thursday, January 25, 2001 1:29 AM
Subject: RE: OSPF Config Styles
> Smarter people than I have a diversity of opinion here. A couple of random
> thoughts:
>
> Using 0.0.0.0 255.255.255.255 is quick and dirty. It places all the
> interfaces you want into the process, and in some cases some that you
don't
> want. Definitely NOT recommended for the Lab, where you will undoubtedly
be
> told not to advertise something or other
>
> Using a.b.c.d 0.0.0.0 serves to place only the specific interface into the
> process. Specific, clean, easy to troubleshoot, and in any environment is
> supposed to make troubleshooting easier. Everyone, how many times have you
> done things this way, found something or other wasn't working, and it took
a
> while for your sore eyes to see you made a mistake in the a.b.c.d portion?
> In a time sensitive environment like the Lab this still might be the
easiest
> thing to troubleshot
>
> a.b.c.d inverse mask easiest one to make a mistake with, and hardest one
to
> troubleshoot, IMHO. Especially in an VLSM environment.
>
> BTW, just for fun consider using the interface address as the mask. E.g.
> 192.168.7.47 192.168.7.47 area 1 it is indeed a legitimate mask, as it
> places the desired interface into OSPF. Just remember the law of
unintended
> consequences :->
>
> Question to all - do you find yourselves slipping back and forth between
> inverse mask / wildcard mask / subnet mask usage?
>
> I find myself more than I care entering 0.0.0.0 as a subnet mask and
> 255.255.255.240 as a wildcard mask. Is this a stage I am going through as
I
> pound routers more and more in my prep?
>
> Chuck
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Les
> Hardin
> Sent: Wednesday, January 24, 2001 10:01 PM
> To: ccielab@groupstudy.com
> Subject: OSPF Config Styles
>
> All,
>
> I'd like to engage in a religious discussion for a moment -- OPSF
> configuration styles.
>
> I know that there are at least 2 schools of thought out there regarding
> OSPF config.
>
> Under router ospf 1:
> 1) Use network command with classfull IP addresses
> 2) Use network command with 32-bit interface address, ensuring that only
> the desired interface is activated for OSPF, then perhaps using area range
> to summarize.
>
> I'd like to hear from a few folks as to what their preference is and
> why. I'm interested as to where the majority of folks sit on this
> topic. Thanks for your inputs.
>
> Les
> yada yada yada certs
>
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