From: Jim Brown (Jim.Brown@xxxxxxxxxxxxx)
Date: Thu Dec 06 2001 - 14:44:02 GMT-3
This explains something I have been struggling with. I knew about the
default advertisement and clns on the interface, but I was unaware of the
need for an L2 adjacency for the advertisement of the default route.
Please clarify/validate my statement....... An L1/L2 router will not set the
ATT bit unless it has formed and adjacency with another L2 router?
-----Original Message-----
From: Craig King [mailto:cking007@hotmail.com]
Sent: Thursday, December 06, 2001 8:52 AM
To: ccie2001ca@yahoo.ca
Cc: ccielab@groupstudy.com
Subject: Re: ISIS L1 router's default route
A default route is automatically generated by the L1/L2 router when it has
established an adjacency with another L2 router. Once the L2 adjacency is
created, the L1/L2 router knows that the backbone area is reachable and can
default L1 traffic into it. No need to use "default-information originate".
I'm only using "ip router isis" on the interfaces, so I doubt that "clns
router isis" is needed either.
HTH,
Craig
>From: "Clarke J" <clark.j@163.com>
>Reply-To: "Clarke J" <clark.j@163.com>
>To: "CCIE Candidate" <ccie2001ca@yahoo.ca>
>CC: "CCIE-Groupstudy" <ccielab@groupstudy.com>
>Subject: Re: ISIS L1 router's default route
>Date: Thu, 6 Dec 2001 09:54:57 +0800
>
>I think you'd better configure " clns router isis " under interface .
>
>----- Original Message -----
>From: "CCIE Candidate" <ccie2001ca@yahoo.ca>
>To: <ccielab@groupstudy.com>
>Sent: Thursday, December 06, 2001 08:55
>Subject: ISIS L1 router's default route
>
>
> > Hello group:
> >
> > I 've read in the documents that L1/L2 router acts as
> > a default gateway for all L1 routers, but i could not
> > make it work. Infact, there is no default route in the routing
> > table. One way I can think of is to use
> > "default-information-originate" but what needs to be done to use
> > the ATT bit advertised by L1/L2 routers ?
> >
> > Thanks in advance
> >
> > KJ
> >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:39 GMT-3