Re: [nsp] ATM Network questions

From: Przemyslaw Karwasiecki (karwas@ifxcorp.com)
Date: Wed Feb 06 2002 - 18:25:59 EST


I have something simillar, although not identical:

Router VECCSNOC3662x1 config looks like this:

interface ATM5/0
 no ip address
 no atm scrambling cell-payload
 no atm ilmi-keepalive
!
interface ATM5/0.1136 point-to-point
 description VC to VECCSCTV7206X1
 ip address xxx.xxx.xxx.xxx 255.255.255.252
 ip router isis
 pvc 1/136
  oam-pvc manage
  encapsulation aal5snap
 !
 tag-switching ip
!
interface ATM5/0.1137 point-to-point
 description VC to Global One
 ip address xxx.xxx.xxx.xxx 255.255.255.252
 pvc 1/137
  oam-pvc manage
  encapsulation aal5snap
 !
!

and switch config for this interface looks like:

interface ATM0/0/0
 description Global One (OC3 SM)
 no ip address
 no ip directed-broadcast
 no atm ilmi-keepalive
!
interface ATM0/0/1
 description VECCSNOC3662x1 (OC3 MM)
 no ip address
 no ip directed-broadcast
 no atm ilmi-keepalive
 atm pvc 1 137 interface ATM0/0/0 1 137
!
interface ATM0/1/0
 description E3 to CANTV colo
 no ip address
 no ip directed-broadcast
 no atm ilmi-keepalive
 atm pvc 1 136 interface ATM0/0/1 1 136
!

-----

Please make note that PVCs on cisco ATM switches are bidirectional,
and related "atm pvc" statement is always placed on "higher" interface,
regardles where you put it originaly in your config.

Hope this help,

Przemek

On Wed, 2002-02-06 at 13:07, TMS wrote:
> I thinking about extension my network and my new network project
> conception looks that:
>
>
> ISP 1's Cisco
> |
> | ATM/OC3
> |
> ATM/OC12 ATM0/0/0
> Cisco ATM2/0/0 ------------------- ATM0/1/0 Catalyst
> 7507 8540 MSR
> ATM0/0/1
> |
> | ATM/OC3
> |
> ISP 2's Cisco
>
> Is this network-drawing is correct ? From my C7507 I want
> create 2 PVC's to ATM Switch. Links from ISP's will be terminated
> on router. Catalyst will be switching ATM CELL's from ATM0/0/0 to
> ATM0/1/0 PCV 10/100 and from ATM0/0/1 to ATM0/1/0 PCV 20/100.
>
> Maybe someone of you have similar network configuration ? I would
> be gratefull if someone will post some ATM switch and
> router configuration examples useful in this situation.
>
> t.
>



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