From: Walter Chen (wchen@xxxxxxxxx)
Date: Mon May 28 2001 - 17:04:57 GMT-3
IMHO, you can use 0.0.0.255 mask if you have other 1.1.1.x/29 networks onthe
same router and they also belong to the same OSPF area. However, if these
networks should not be in OSPF or in the same area, you definitely should
not use 0.0.0.255 mask. The absolutely sure and correct way is to use
0.0.0.7 mask for 1.1.1.0/29 network.
You can use 0.0.0.0 mask in cases if you do not need to redistribute
1.1.1.0/29 into other routing protocols on this same router. However, if,
say, your 192.168.1.0/24 belongs to EIGRP and you want to reistribute
between OSPF and EIGRP, the 1.1.1.0/29 network will NOT be passed into EIGRP
if you have used 0.0.0.0 mask.
Walter
----- Original Message -----
From: Peter Van Oene <pvo@usermail.com>
To: <ccielab@groupstudy.com>
Sent: Monday, May 28, 2001 9:35 AM
Subject: Re: how anal is the lab grading
> Personally, I'd not use 0.0.0.255 in any case, lab or otherwise. The full
0's mask is the safe and accurate way to add interfaces to the OSPF process
and unless you need to add 20 odd interfaces, I'd suggest you use it. As
far as the lab goes, I can attest that lab grading is fair. You shouldn't
worry about trivial semantics. If your prepared, you'll likely have a good
idea when you are using an illegal shortcut.
>
> Pete
>
>
> *********** REPLY SEPARATOR ***********
>
> On 5/28/2001 at 7:48 AM Don Dettmore wrote:
>
> >Question - How nit-picky are the graders of the lab? F0r example,
> >something
> >occurred to me when I was working in the lab:
> >
> >192.168.1.0 /24 ------ R1 ----- 1.1.1.0 /29
> >
> >When configuring R1 for OSPF, would the following be acceptable:
> >
> >network 1.1.1.0 0.0.0.255 area 0.0.0.0
> >
> >Or would that be considered wrong because of the 'wrong' (or I should
say -
> >not specific enough) wildcard mask.
> >
> >Just wondering how anal I must train myself to be.
> >
> >Don Dettmore
> >**Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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