From: Engelhard M. Labiro (engelhard@xxxxxxxxxxxxxx)
Date: Sun Mar 17 2002 - 10:38:12 GMT-3
Hi Richard,
Seems like you are true.
I tested transparent bridging spoke-to-spoke through
a hub using multipoint interface using Lab 26`s scenario of
Solie`s book (page 941). There are two win machines connected
to both spoke, and they can`t browse each other using NetBEUI.
Now if one machine is on the hub (connected
to wolf) and the other machine is on the spoke
(connected to either trashman or lone_rhino), both
machines can browse each other.
Here is the result of "sh bridge" , when both machines are
on the spoke. Note that there are received traffic (RX count)
but no transmit traffic (TX count =0). Does it mean that
the frame-relay interface on the hub doesn`t forward traffic
from one spoke to the other spoke ?
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 2 26 0
0080.4518.0fdd forward Serial0/0.1 0 10 0
wolf#
Here is the "show frame map" result
wolf#sfm
Serial0/0.1 (up): bridge dlci 131(0x83,0x2030), static,
broadcast,
CISCO, status defined, active
Serial0/0.1 (up): bridge dlci 110(0x6E,0x18E0), static,
broadcast,
CISCO, status defined, active
Serial0/0.1 (up): ip 172.16.1.5 dlci 110(0x6E,0x18E0), static,
broadcast,
CISCO, status defined, active
Serial0/0.1 (up): ip 172.16.1.6 dlci 131(0x83,0x2030), static,
broadcast,
CISCO, status defined, active
Serial0/0.2 (up): point-to-point dlci, dlci 180(0xB4,0x2C40), broadcast
status defined, active
wolf#
> Hi there,
>
> This may sound very simple - but I just need a sanity check here ...
>
> Can someone please verify for me that it is not possible to
> transparently bridge from spoke to spoke (over frame relay)
> using a single multi-point
>
> interface (or sub-interface) on the hub? My understanding is that
> this is
> because the bridge will not forward a packet out of the interface it
> received
> it on (makes sense). I have to use two interfaces (or more likely two
> sub-interfaces) to get this to work? Or have I missed something?
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