From: Madisa Ramagoffu (MM) (ramagmm1@telkom.co.za)
Date: Tue Mar 25 2003 - 07:17:20 GMT-3
Hi
I have tried in the lab a couple of times to configure ospf demand
circuit
with the thinking that the isdn will go down if there is no
interesting traffic but it just stays up
I thought maybe it must stay up & not transfere any data , but ospf
update during topology change goes through
I am i right to assume the above or the interface must physically go
down when there is no intresting traffic
also what is interesting traffic in this case ??? is ospf updates also
considered interesting also???
Thanx
madisa
-----Original Message-----
From: Teck PhrEAk!! [mailto:phreakinphunk@hotmail.com]
Sent: 25 March 2003 11:01
To: PhongTT2@FPT.COM.VN; ciscolab@vip.sina.com; ccielab@groupstudy.com
Subject: RE: IP OSPF demain circuit
hey Phong,
that defeats the purpose for which hes using the "OSPF Demand Circuit"
.....backup.....in yr solution the isdn will never come up.....even if
there
is a change in the backbone area.
The purpose of "demand circuit" is NOT "backup"...but to keep isdn
down when
running ospf on it .....so that isdn is used only by interesting
traffic.
for backup use "watch-list" or "backup interfaces".
cheers,
sumit p ahuja
ccie#11125
ccdp,ccnp,rhce,scsa,mcse,ibm e-biz pro.
>From: "Phong Tran Tien" <PhongTT2@FPT.COM.VN>
>Reply-To: "Phong Tran Tien" <PhongTT2@FPT.COM.VN>
>To: "Ciscolab" <ciscolab@vip.sina.com>, <ccielab@groupstudy.com>
>Subject: RE: IP OSPF demain circuit
>Date: Tue, 25 Mar 2003 14:12:12 +0700
>
>if you put the ISDN in area 0, then you have no ways to keep it down
when
>there is a change in your topology. The only way is that you put ISDN
in
>totally stub area with the command "area xxx stub no-summary". Then
changes
>in your topology will not affect the totally stub area and the ISDN
will
>not up.
>
>HTH
>CCIE #11285
>
> -----Original Message-----
> From: Ciscolab [mailto:ciscolab@vip.sina.com]
> Sent: Tue 3/25/2003 12:00 AM
> To: ccielab@groupstudy.com
> Cc:
> Subject: IP OSPF demain circuit
>
>
>
> Hello, All,
>
> I have a working enviroment which is consist of several ospf
areas, I
>backup DDN link with isdn ( ip ospf demand-circuit ) in area 0, how
can I
>keep the ISDN down when there is a route change in the non-backbone
area?
>
> !!!!!!!!!!!!!!!!Ciscolab
> !!!!!!!!!!!!!!!!ciscolab@vip.sina.com
> !!!!!!!!!!!!!!!!!!!!2003-03-25
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