From: Chris Larson (clarson52@xxxxxxxx)
Date: Tue Dec 18 2001 - 23:09:12 GMT-3
Well, since no one else has elaborated I will try to explain again. I may
not have this exactly right but this is how it was explained to me in the
ECP course. Take it or leave it. Hopefully someone will clarify if it is not
right. CCO says it defines networks in the area. But the way it really
operates is to summarize networks into an area. Call it what you will this
is my understanding.
The area-address 0 0 means not to summarize.
so an
area-address 22000000 22ffffff
says sumarize all networks under the 22 address not, as one might think to
only include the 22 network.
check the cco link again.
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/nlsp.htm
01234500 FFFFFF00 would summarize all networks into the 012345 area.
R1 ----C1-------R2------C2-----R3------A4------R4
| | |
| | |
= 012345C1 = 012345C2 = 012345A4 = Area-address
01234500 FFFFFF00
Again the 00 in the right most place defines the networks to include or
summarize into the area address 012345
----- Original Message -----
From: "Jim Brown" <Jim.Brown@CaseLogic.com>
To: "'Larson, Chris (Contractor)'" <Chris.Larson@ed.gov>; "Jim Brown"
<Jim.Brown@CaseLogic.com>; <ccielab@groupstudy.com>
Sent: Tuesday, December 18, 2001 3:20 PM
Subject: RE: What the heck is the NLSP area-address command for?
> The point is..... I have multiple interfaces on a router, some I want in
the
> NLSP process and some I want redistributed into the NLSP process as NX
> routes.
>
> Currently my tests have indicated it doesn't matter what I use for an area
> address as long as I have one, they all jump into the process natively as
N
> routes.
>
> The area-address 0 0 command is just an all 0's wildcard meaning grab
> everything for the process. How do I selectively engage certain networks
> into the process as in OSPF?
>
> The only thing enabling NLSP under the interface does is allow the process
> to form adjacencies with other NLSP routers. It basically starts sending
> hellos when you enable it under the interface.
>
> The documentation on the CD states the area-address is for identifying
> networks for the process.
>
> Is there anyone out there who know NLSP? Somebody must have an answer.
>
> I'm running 12.1.1 enterprise code.
>
> -----Original Message-----
> From: Larson, Chris (Contractor) [mailto:Chris.Larson@ed.gov]
> Sent: Tuesday, December 18, 2001 1:05 PM
> To: 'Jim Brown'; Larson, Chris (Contractor); ccielab@groupstudy.com
> Subject: RE: What the heck is the NLSP area-address command for?
>
>
> Well, gee I guess you could have just done that in the first place.
>
> However, the reason I say it is used to summarize is because you can
simply
> say
>
> area-address 00
>
> and it will include all IPX networks that are defined using nslp enable on
> the interface. Therefore the area-address command is really used to
> sumarrize those address on NLSP enabled interfaces. Therefore what other
> purpose would area-address serve if you simply enable NLSP or define NLSP
by
> using nlsp enable under the interface. Area-address is used to SUMMARIZE.
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Jim Brown [mailto:Jim.Brown@CaseLogic.com]
> Sent: Tuesday, December 18, 2001 2:48 PM
> To: 'Larson, Chris (Contractor)'; Jim Brown; ccielab@groupstudy.com
> Subject: RE: What the heck is the NLSP area-address command for?
>
>
>
> xtocid148655BM_28482BM_1018265Directly from the Doc CD
>
> BM_27290area-address
>
>
> To define a set of network numbers to be part of the current NetWare
> Link-Services Protocol (NLSP) area, use the area-address command in router
> configuration mode. To remove a set of network numbers from the current
NLSP
> area, use the no form of this command.BM_1018267
>
> -----Original Message-----
> From: Larson, Chris (Contractor) [mailto:Chris.Larson@ed.gov]
> Sent: Tuesday, December 18, 2001 11:50 AM
> To: 'Jim Brown'; ccielab@groupstudy.com
> Subject: RE: What the heck is the NLSP area-address command for?
>
>
>
> I believe it is really just a tool for aggregating or summarizing NLSP
> networks, not defining them.
>
>
> -----Original Message-----
> From: Jim Brown [mailto:Jim.Brown@CaseLogic.com
> <mailto:Jim.Brown@CaseLogic.com> ]
> Sent: Tuesday, December 18, 2001 1:29 PM
> To: ccielab@groupstudy.com
> Subject: What the heck is the NLSP area-address command for?
>
>
> Running thought some testing the other night and I defined a network
between
>
> two routers, network 22. The router had a couple of other networks off
other
>
> interfaces involved in IPX RIP processes.
>
> I then added the area-address command to define an exact match,
area-address
>
> 22 FFFFFFFF.
>
> Guess what, the 22 network appeared as an N route but so did all of the
> other attached interfaces that were different networks?
>
> What the heck is going on? I thought the area-address command defined
which
> networks were part of the routing process like OSPF?
>
> Can anyone help me?
> <http://www.groupstudy.com/list/posting.html>
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