Re: Stop the hello in OSPF

Did the original question tell us its an ethernet network ?? ;-)

On Sun, Jun 28, 2009 at 7:59 PM, Scott Morris <smorris_at_ine.com> wrote:

> Ok, fair enough... So let's look at it differently.
>
> While it's on ethernet, how many peers are there? If there's only two,
> why can't you change to a "ip ospf network point-to-point'???
>
> At that point you can run demand circuit just fine.
>
> Did the original question tell us how many peers? I may have been
> sleeping at that point! But you are correct, in a broadcast network
> type we aren't allowed to run demand circuit.
>
>
>
>
> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
>
> JNCIE-M #153, JNCIS-ER, CISSP, et al.
>
> JNCI-M, JNCI-ER
>
> evil_at_ine.com
>
>
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>
> shiran guez wrote:
> > Hi Scott
> >
> > not sure you are correct about this as he is talking about Ethernet a
> > broadcast segment unless it is a bug the RFC 1793 strictly indicate
> > that hello will not be reduced!
> >
> > Demand circuits and regular network segments (e.g., leased lines) are
> > allowed to be combined in any manner. In other words, there are no
> > topological restrictions on the demand circuit support. However,
> > while any OSPF network segment can be defined as a demand circuit,
> > only point-to-point networks receive the full benefit. When broadcast
> > and NBMA networks are declared demand circuits, routing update
> > traffic is reduced but the periodic sending of Hellos is not, which
> > in effect still requires that the data-link connections remain
> > constantly open.
> > ...
> > ...
> > 3.2. Sending and Receiving OSPF Hellos
> >
> > The following sections describe the required modifications to OSPF
> > Hello Packet processing on point-to-point demand circuits.
> >
> > For OSPF broadcast and NBMA networks that have been configured as
> > demand circuits, there is no change to the sending and receiving
> > of Hellos, nor are there any changes to the Neighbor State
> > Machine. This is because the proper operation of the Designated
> > Router election algorithm requires periodic exchange of Hello
> > Packets.
> >
> >
> > if you where talking on p2p circuit I would agree with Scott totally.
> >
> >
> >
> > On Sun, Jun 28, 2009 at 4:09 PM, Scott Morris<smorris_at_ine.com> wrote:
> >
> >> Use the demand-circuit.
> >>
> >> Hellos are suppressed although "show ip ospf neighbor" will still show
> >> the neighbor there. We used to use this in dial-on-demand routing
> >> where the neighbor would still show up even though the dial circuit had
> >> actually gone away.
> >>
> >> HTH,
> >>
> >>
> >>
> >>
> >> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
> >>
> >> JNCIE-M #153, JNCIS-ER, CISSP, et al.
> >>
> >> JNCI-M, JNCI-ER
> >>
> >> evil_at_ine.com
> >>
> >>
> >> Internetwork Expert, Inc.
> >>
> >> http://www.InternetworkExpert.com
> >>
> >> Toll Free: 877-224-8987
> >>
> >> Outside US: 775-826-4344
> >>
> >>
> >> Knowledge is power.
> >>
> >> Power corrupts.
> >>
> >> Study hard and be Eeeeviiiil......
> >>
> >>
> >>
> >>
> >> ismail mohamed wrote:
> >>
> >>> Hi,
> >>>
> >>> R1--R2 connected with OSPF process.
> >>>
> >>> Now i want to stop the hellow between this but neighbor should not
> distrip
> >>>
> >>> is there any way we can only stop the hello and have a neight between
> them..
> >>>
> >>>
> >>> I tought using passive inter but neighbr alos deleted.
> >>>
> >>> Thansk in advance.
> >>>
> >>>
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Received on Sun Jun 28 2009 - 20:08:39 ART