RE: ISIS Full mesh adjiacency [bcc][faked-from][bayes]

From: marvin greenlee (marvin@ccbootcamp.com)
Date: Thu Mar 03 2005 - 14:42:14 GMT-3


You could use a different interface type (multipoint subinterface, instead
of point-to-point subinterface)

Marvin Greenlee, CCIE#12237, CCSI# 30483
Network Learning Inc
marvin@ccbootcamp.com
www.ccbootcamp.com (Cisco Training)

-----Original Message-----
From: Jongsoo.Kim@Intelsat.com [mailto:Jongsoo.Kim@Intelsat.com]
Sent: Thursday, March 03, 2005 9:31 AM
To: marvin greenlee; gzdillon@hotmail.com; my-ccie-test@libero.it
Cc: ccielab@groupstudy.com
Subject: RE: ISIS Full mesh adjiacency [bcc][faked-from][bayes]

Marive

How can I change from point-to-point to broadcast?

-----Original Message-----
From: marvin greenlee [mailto:marvin@ccbootcamp.com]
Sent: Thursday, 03 March, 2005 12:22 PM
To: 'Dillon Yang'; my-ccie-test@libero.it
Cc: Group Study
Subject: RE: ISIS Full mesh adjiacency [bcc][faked-from][bayes]

IS-IS recognizes two network types - point-to-point (Serial) and broadcast
(LAN). The network type is determined by the type of interface.

Point-to-point subinterface - point-to-point
Physical interface - broadcast
Multipoint subinterface - broadcast

If there is a mismatch on the two sides of the connection, you will not form
an adjacency.

With IOS versions 12.2(8)T and later, the command 'isis network
point-to-point' can be configured on a broadcast interface type, and the
router will treat the connection as point-to-point.

Router(config)#int ser1/0
Router(config-if)#isis network ?
  point-to-point Specify ISIS point-to-point network

Router(config-if)#isis network point-to-point

See also:

Cisco - IS-IS Network Types and Frame Relay Interfaces
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009445a
.shtml

Marvin Greenlee, CCIE#12237, CCSI# 30483
Network Learning Inc
marvin@ccbootcamp.com
www.ccbootcamp.com (Cisco Training)

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Dillon Yang
Sent: Friday, March 04, 2005 3:03 PM
To: my-ccie-test@libero.it
Cc: Group Study
Subject: Re: ISIS Full mesh adjiacency [bcc][faked-from][bayes]
Importance: Low

Hi, Max:

  I did a lot of combination for ISIS, I could not find a way to configure
ISIS network p2p explicitly. Maybe you can?
From the output of ""debug isis adj", I just saw "xxx sending L2 LAN IIH on
yyy" if its on main interface; and I saw "xxx sending L1 serial IIH" on
subinterface; and I saw "xxx sending L1 IIH" somewhere.
  I can not distinguish the third type for I just know two type that are
"LAN IIH" and "serial IIH".

dillon

----- Original Message -----
From: <my-ccie-test@libero.it>
To: <ccielab@groupstudy.com>
Sent: Wednesday, March 02, 2005 4:36 AM
Subject: Re: Re: ISIS Full mesh adjiacency

> Thank you all for your comments.
> I think when we have isis in FR cloud topolgy AND broadcast net type
(physical or p2multi interfaces)we must use fully-meshed pvcs, otherwise we
have to configure p2p links or configure isis network point-to-point.
>
> do you agree on this ?
>
> bye
>
> Max
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html



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