From: Brian Dennis (brian@5g.net)
Date: Tue Sep 03 2002 - 21:20:22 GMT-3
Are they using "ip ospf network point-to-multipoint" under the
frame-relay interfaces?
Brian Dennis, CCIE #2210 (R&S/ISP Dial
-----Original Message-----
From: Peng Zheng [mailto:zpnist@yahoo.com]
Sent: Tuesday, September 03, 2002 5:08 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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> >
>
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