From: Volkov, Dmitry (Toronto - BCE) (dmitry_volkov@ca.ml.com)
Date: Tue Sep 03 2002 - 21:30:39 GMT-3
Peng,
That Lab doesn't have p-to-m network in FR cloud. Network type there NB with
neighbors configured on HUB and FR maps on Hub and spokes. They use P-to-M
network on Ethernet (subnet 222) just for dead interval 120 sec requirement
and there are no any FR map statemnets there.
Dmitry
> -----Original Message-----
> From: Peng Zheng [mailto:zpnist@yahoo.com]
> Sent: Tuesday, September 03, 2002 8:08 PM
> To: Brian Dennis; ccielab@groupstudy.com
> Subject: RE: OSPF point-to-multipoint over frame-relay
>
>
> But in Cyscoexpert sample lab, the map to R2 is
> configured on R3.
>
>
>
> --- Brian Dennis <brian@5g.net> wrote:
> >
> > ----R2
> > R1--
> > ----R3
> >
> > If R2 needs to send packets to R3 and the route to
> > R3's address (/32) is
> > via the hub (R1) why would a mapping to R3 be needed
> > on R2? R2 just
> > needs a mapping to R1.
> >
> > If R2 didn't have a /32 route to R3 via R1 then a
> > mapping would be
> > needed.
> >
> > Brian Dennis, CCIE #2210 (R&S/ISP Dial)
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com] On Behalf Of
> > Peng Zheng
> > Sent: Tuesday, September 03, 2002 12:29 PM
> > To: Brian Dennis; ccielab@groupstudy.com
> > Subject: RE: OSPF point-to-multipoint over
> > frame-relay
> >
> > But if it's NBMA, the map is required. Is it right?
> >
> >
> > --- Brian Dennis <brian@5g.net> wrote:
> > > It's true. With "ip ospf network
> > > point-to-multipoint" host routes are
> > > advertised so no additional mappings are needed.
> > >
> > > Brian Dennis, CCIE #2210 (R&S/ISP Dial)
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com
> > > [mailto:nobody@groupstudy.com] On Behalf Of
> > > Peng Zheng
> > > Sent: Tuesday, September 03, 2002 11:23 AM
> > > To: ccielab@groupstudy.com
> > > Subject: OSPF point-to-multipoint over frame-relay
> > >
> > > Hi,
> > >
> > > It's a hub-spoke configuration. Router E is hub,
> > > Router G and Router H are spokes.
> > >
> > > I thought I should configure frame map for E and H
> > > on
> > > G, but in CIM, their configuration are:
> > >
> > > --------------------------------------------------
> > > Router_E:
> > >
> > > interface Serial1
> > > ip address 170.170.9.5 255.255.255.0
> > > no ip mroute-cache
> > > encapsulation frame-relay
> > > ip ospf network point-to-multipoint
> > > frame-relay map ip 170.170.9.7 121 broadcast
> > > frame-relay map ip 170.170.9.8 123 broadcast
> > > router ospf 7
> > > network 170.170.9.0 0.0.0.255 area 0
> > > Router_G:
> > >
> > > interface Serial0
> > > no ip address
> > > encapsulation frame-relay
> > > frame-relay lmi-type ANSI
> > > !
> > > interface Serial0.5 multipoint
> > > ip address 170.170.9.7 255.255.255.0
> > > ip ospf network point-to-multipoint
> > > frame-relay map ip 170.170.9.5 112 broadcast
> > > router ospf 7
> > > network 170.170.9.0 0.0.0.255 area 0
> > >
> >
> ------------------------------------------------------
> > >
> > > They said it's because Router E installed two host
> > > routes for H and G, So map for H on G is not
> > > required.
> > >
> > > Is this true?
> > >
> > > Thank you for help.
> > >
> > > Best Regards,
> > > Peng Zheng
> > >
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