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RE: Need help with Cisco VLAN bridging....

  • From: Craig Holland
  • Date: Mon Feb 12 01:55:15 2001

I'm not sure what I had wrong with my config...but I scratched and started
over and this worked.  It was also possible to do this using SDE
encapsulation on the HSSI interfaces.  I received some traceback
messages...so decided to opt for the frame-relay solution.

Thanks! Everyone for your input!


craig

> -----Original Message-----
> From: Brett Frankenberger [mailto:rbf@rbfnet.com]
> Sent: Friday, February 09, 2001 2:48 PM
> To: Craig Holland
> Subject: Re: Need help with Cisco VLAN bridging....
>
>
> >
> >
> > Has anyone had experience bridging multiple VLANs accross a
> clear-channel
> > DS3?  I have 2 3640's populated with 1 FE and 1 HSSI.  They are
> connected by
> > a DS3.  I've tried a couple of different configs, including turning one
> > router into a frame swich and building a PVC for each VLAN, but
> the bridging
> > didn't seem to work. I've tried running SDE directly between the HSSI
> > ports...and that didn't seem to work. I'm up a against a
> deadline here, and
> > would greatly appreciate any help you can offer.  I've also
> tried a couple
> > of IRB configs.
>
> I'm guessing you are running 802.1q (or ISL) on the FE, and you want to
> bridge VLAN 1 on the one 3640 to VLAN 1 on the other 3640, and the same
> with VLAN 2, and so on.  (And the 3640s are connected togethor via the
> DS3).  Right?
>
> I've never done this, but I think the following should work.
> (Essentially, it's the frame switch thing you mentioned above).
>
> ROUTER #1
>
> frame-relay switching
> bridge 1 protocol ieee
> bridge 2 protocol ieee
> int fast X.1
>   enc dot1q 1
>   bridge-group 1
> int fast X.2
>   enc dot1q 2
>   bridge-group 2
> int HSSI X
>   enc frame-relay
>   frame-relay intf-type dce
> int HSSI X.1
>   frame-relay interface-dlci 16
>   bridge-group 1
> int HSSI X.2
>   frame-relay interface-dlci 17
>   bridge-group 2
>
>
> ROUTER #2
>  [[ Same, except leave out "frame-relay switching" and "frame;relay
> intf-type dce" ]]
>
> OBviously the above has no provision for IP addresses for management,
> etc.,  That is left as an exercise for the reader.  If you want the
> router to route to the VLANs in question as well as bridging them
> between the tw 3640s, you need to add something like
>   bridge irb
>   bridge 1 route ip
>   bridge 1 bridge ip
>   bridge 2 route ip
>   bridge 2 bridge ip
>   int bvi1
>    ip address ...
>   int bvi2
>    ip address ...
>
> Or you could have a separate management vlan and do something like
>    int fast X.3
>     enc dot1q 3
>     ip address ...
>
> (And possible a separate management PVC with a new HSSI sub-interface
> on each end.)
>
>      -- Brett
>
>






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