I have something similar in our lab.

Use irb to bridge the ATM

in global config:
~~~~~~~~~~~~
bridge irb
bridge 1 protocol ieee
 bridge 1 route ip

on the ATM interface:
~~~~~~~~~~~~~~~~~
interface ATM1/0.826 multipoint
  ip address 172.16.1.1 255.255.255.0
  atm pvc 826 0 826 aal5snap inarp 1
  map-group VLAN826
bridge-group 1

create a BVI:
~~~~~~~~~~
interface BVI1
 mtu 1500
 ip address 198.103.240.25 255.255.255.252


hope this gives you a few ideas..........


Kevin Wigle



----- Original Message -----
From: "Travis Gamble" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, January 09, 2001 12:02 AM
Subject: LANE over PVCs


> Hi all,
>
> I've run into a problem using a LANE blade to carry VLAN traffic over
PVCs.
> Normally, you would have LANE blades in SwitchA and in SwitchB, both of
them
> with corresponding statements like:
> atm pvc 826 0 826 aal5snap
> atm bind pvc vlan 826 826
>
> So then, any traffic for VLAN 826 is carried over a PVC on 0/826.  All of
> the devices in the two switches can talk happily.
>
> The problem I have is that the other end of my tunnel is not a second LANE
> blade, but the ATM interface of a 7204 router.
>
> We have several devices in a VLAN on one switch, and they all need to talk
> to the router at the other end.  Is there a way to terminate these PVCs on
> the router, and have it communicate correctly with the VLAN?
>
> So on SwitchA, we have a VLAN, 826 with several IP devices on it... the
VLAN
> is sent through to the LANE blade, and is bound to a PVC with statements
> like:
> atm pvc 826 0 826 aal5snap
> atm bind pvc vlan 826 826
>
> Then PVC 0/826 runs through an ATM network, and arrives at the ATM 1/0
> interface of a router.  All of that works fine.... but once it gets there,
> the router doesn't seem to know what to do with this traffic.  If it were
an
> Ethernet interface I would say "encapsulation isl 826"... but that doesn't
> apply on an ATM interface.  Any ideas?
>
> The way I tried, was to make a sub-interface on the ATM interface of the
> router
> interface ATM1/0.826 multipoint
>    ip address 172.16.1.1 255.255.255.0
>    atm pvc 826 0 826 aal5snap inarp 1
>    map-group VLAN826
>
> map-list VLAN826
>    172.16.1.2 atm-vc 826 broadcast
>
> Then try to ping across it... traffic shows up on the PVC, but doesn't
ever
> reach the VLAN correctly.  Any ideas?  Should that configuration have
> worked?  If so, maybe I made a dumb mistake, because traffic was
definitely
> flowing to the PVC.
>
> By the way... we are unable to implement a full-scale LANE system (with a
> LECS and a LES and a BUS and all that jive).  I know that would fix it,
but
> it would introduce new problems in our configuration.
>
> I definitely would appreciate any input.
>
> Regards,
> Travis Gamble


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