From: Stefan Grey (examplebrain@hotmail.com)
Date: Tue Aug 23 2005 - 12:42:09 GMT-3
Look on the brakedown from the IEWB workbook (this appears some times in the
workbook so it isn't just a mistake)
Task: configure the net address as 13456
brakedown,explanation:
isis network entity title (NET address are in the ISO NSAP format, and are
denoted in hexadecimal format. The above requirement states that R1,R3,R4,R5
and R6 be configured in IS-IS area 13456. In hexadecimal, this number
converts to 3490. However, as the IS-IS NET address must start and end to
one octet, and additional 00 has been added to the beginning of the address.
Could anybody comment???
>From: Hictor Fernandez <gnakh@telefonica.net>
>Reply-To: Hictor Fernandez <gnakh@telefonica.net>
>To: "Stefan Grey" <examplebrain@hotmail.com>, <ccielab@groupstudy.com>
>Subject: Re: ISIS address rule question.
>Date: Tue, 23 Aug 2005 17:35:59 +0200
>
>Hi all,
>
>1st. time I've heard of that...
>Last octet (n-selector) is what makes that NSAP address the NET, 00. First
>byte, 34 or 49 here, part of the area address (up to 13 bytes).
>
>I hope this helps
>
>best regards
>Hictor
>
>REM: NSAP ADDRESS = AreaID (1..13 bytes), SysID (6 bytes), NSEL (1 byte),
>and for the NSAP address to be the NET, NSEL=0x00
>
>----- Original Message -----
>From: "Stefan Grey" <examplebrain@hotmail.com>
>To: <ccielab@groupstudy.com>
>Sent: Tuesday, August 23, 2005 4:27 PM
>Subject: ISIS address rule question.
>
>
> > There is a rule that the Net address should start and end with the same
> > octet. While doing different labs I can't uderstand it.
> >
> > 1. 3490.0001.0001.0006.00
> > 2.490125.0001.0001.0006.00
> >
> > Why the first address is incorrect. And to correspond to the rule above
>we
> > should use the address 00.3490.0001.0001.0006.00
> >
> > But the second is correct. I just can't understand it event writing this
> > addresses in binary.
> >
> > Could anybody explain?? thanks;)
> >
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