From: michael robertson (michael_w_2ca@xxxxxxxx)
Date: Fri Feb 15 2002 - 14:22:36 GMT-3
Hi, there,
Thank you for your reply. I understant how demand
circuit works. But I don't understand why /32 bit will
be up and down.
Is it that because the link supposed to be down
because of the demand circuit. But whenever the /32 is
missing ( because of the demand circuit), then the
router find the topology changes and bring up the link
again. In this way, the link is alway up and down.
My second question is why /32 of opposite router is
shown in the local router's routing table if it's ppp?
any reason's for this? I have got this many times in
my test, but don't down specific reason for this?
any comments?
regards
michael
--- "Baiao, Nuno" <Nuno.Baiao@kpmg.co.uk> wrote:
> The way to overcome this problem is to add the
> command "no peer
> neighbor-route" to the ppp interface and that way
> the /32 network does not
> appear in the routing table.
> Have fun
>
> -----Original Message-----
> From: RSiddappa@NECBNS.com
> [mailto:RSiddappa@NECBNS.com]
> Sent: Friday, February 15, 2002 8:13 AM
> To: michael_w_2ca@yahoo.ca; ccielab@groupstudy.com
> Subject: RE: ISDN demand circuit question: link
> always up why?
>
>
> The property of Demand circuit is to come up when
> therre is change in the
> toplogy table or u r routing table. That si the
> reason it brings up the ISDN
> when the /32 route disappears from the rotuign
> table.
>
>
> -----Original Message-----
> From: michael robertson
> [mailto:michael_w_2ca@yahoo.ca]
> Sent: Thursday, February 14, 2002 10:04 PM
> To: ccielab@groupstudy.com
> Subject: ISDN demand circuit question: link always
> up why?
>
>
> Hi, Group,
>
> Can somebody explain to me the following link
>
> http://www.cisco.com/warp/customer/104/dcprob.html
>
> Reason 4:
>
> When the link goes down the /32 disappearspears and
> OSPF understands this as a change in topology. The
> demand circuit brings the link up again to propagate
> the MAXAGE version of the /32 mask to its neighbor.
>
> I understand that ppp will install a /32 host in R1,
> (
> even though I don't know why here). but wy the
> demand
> circuit has to bring up the link to propogate teh
> MAXAGE version of /32 mask to its neighbot.
>
> So why one solution can be that you use different
> major net at the different R1 ( rip router)
> interface
>
> as always, any help will be greatly appreciated
>
> thanks
>
> Michael
>
>
>
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