From: MADMAN (dmadlan@xxxxxxxxx)
Date: Mon Mar 18 2002 - 11:57:30 GMT-3
The reason you cannot bridge spoke to spoke in a partial mesh
multipoint configuration is the same reason IPX and appletalk won't
work, split horizon. This is the very reason Cisco implemented
point-to-point subinterfaces several years ago.
Dave
"Engelhard M. Labiro" wrote:
>
> > What is the right answer ?
> > Can u bridge on a
> > 1. Poitn to Multipint Frame Interafce yes/No.
> > If yes how ?. If no we know the answer.
>
> The answer is no (at least I can`t make it work).
> Transparent bridging does not bridge traffic between
> spoke to spoke through a hub on multipoint interface,
> however it does bridges traffic from hub to spoke and vice versa.
> I think Fred Ingham`s post is very good to describe the reason
> why it doesn`t bridge.
>
> Does anyone have different results ?
>
> Here is my test environment, Lab 26 Solie`s book.
>
> win98-- lone_rhino---wolf---trashman--win2000
>
> wolf is the hub, lone_rhino & trashman are spokes.
> Win98 and Win2000 only has NetBEUI protocol enabled,
> and no TCP/IP protocol.
>
> Test 1 , NetBEUI browsing between win98 at the hub and
> win2000 at the spoke.
>
> win98---wolf----trashman----win2000
>
> Result:
> Both window machines can browse to each other.
>
> "sh bridge" at wolf (note that the counter of RX and TX are
> increasing, means that there are NetBEUI traffic`s exchange).
>
> wolf#sh bridge
> Total of 300 station blocks, 298 free
> Codes: P - permanent, S - self
>
> Bridge Group 1:
>
> Address Action Interface Age RX count TX count
> 0080.9870.0828 forward Serial0/0.1 0 25 16
> 0080.4518.0fdd forward Ethernet0/0 0 17 20
>
> The relevant "sho bridge" at trashman
>
> trashman#sh bridge
> Total of 300 station blocks, 298 free
> Codes: P - permanent, S - self
>
> Bridge Group 1:
>
> Address Action Interface Age RX count TX count
> 0080.9870.0828 forward Ethernet0/0 0 25 16
> 0080.4518.0fdd forward Serial0/0 0 17 20
>
> Transparent bride configuration at wolf (FR hub):
> !
> interface Ethernet0/0
> ip address 172.16.55.1 255.255.255.0
> bridge-group 1
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> !
> interface Serial0/0.1 multipoint
> ip address 172.16.1.1 255.255.255.0
> no ip split-horizon eigrp 2001
> frame-relay map bridge 131 broadcast
> frame-relay map bridge 110 broadcast
> frame-relay map ip 172.16.1.5 110 broadcast
> frame-relay map ip 172.16.1.6 131 broadcast
> bridge-group 1
> !
> bridge 1 protocol ieee
> !
>
> Transparent bridge configuration at trashman (FR spoke):
> !
> interface Serial0/0
> ip address 172.16.1.6 255.255.255.0
> encapsulation frame-relay
> no fair-queue
> frame-relay map bridge 130 broadcast
> frame-relay map ip 172.16.1.5 130 broadcast
> frame-relay map ip 172.16.1.1 130 broadcast
> bridge-group 1
> !
> interface Ethernet0/0
> ip address 172.16.6.1 255.255.255.0
> half-duplex
> bridge-group 1
> !
> bridge 1 protocol ieee
> !
>
> Test 2, NetBEUI browsing between machines at the spoke.
> win98-- lone_rhino---wolf---trashman--win2000
>
> Result : both machines can not browse to each other.
> See my other post for the "show bridge" result.
>
> > 2. Point to point frame Inteafce. Yes / No.
> >
> >
> > I guess we can.
> >
> >
> >
> > R.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: MADMAN [mailto:dave@interprise.com]
> > Sent: Sunday, March 17, 2002 2:56 PM
> > To: Rob Rummel
> > Cc: 'Engelhard M. Labiro'; ccielab@groupstudy.com
> > Subject: Re: Transparent Bridge with FR hub & spoke
> >
> >
> > Well sorta. You can bridge on a point to multipoint frame network.
> >
> > Dave
> >
> > Rob Rummel wrote:
> >
> > > You cannot bridge across a multipoint frame relay link.
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