Re: [nsp] Cisco DS3 Questions..

From: sthaug@nethelp.no
Date: Fri Feb 22 2002 - 13:00:57 EST


> > Note that the same differentiation can also be done with ATM-DXI
> > encapsulation (nobody seems to know this :-).
>
> Doesn't one need ATM PA's for that?

No, you don't. ATM DXI encapsulation is meant to be used to talk with
an external ATM DSU. In practice it also works fine between two serial
interfaces on different Cisco routers. Example configuration included
below. (The routers in question happened to be a 7500 and a 2600, but
that is not really relevant...)

Steinar Haug, Nethelp consulting, sthaug@nethelp.no
----------------------------------------------------------------------

Router 1:

interface Serial0/1/0
 no ip address
 encapsulation atm-dxi
 no keepalive
!
interface Serial0/1/0.1 multipoint
 ip address 192.168.1.1 255.255.255.0
 dxi pvc 0 10 mux
 dxi map ip 192.168.1.2 0 10
!
interface Serial0/1/0.2 multipoint
 ip address 192.168.2.1 255.255.255.0
 dxi pvc 0 11 mux
 dxi map ip 192.168.2.2 0 11

Router 2:

interface Serial0/0
 no ip address
 encapsulation atm-dxi
 no keepalive
!
interface Serial0/0.1 multipoint
 ip address 192.168.1.2 255.255.255.0
 dxi pvc 0 10 mux
 dxi map ip 192.168.1.1 0 10
!
interface Serial0/0.2 multipoint
 ip address 192.168.2.2 255.255.255.0
 dxi pvc 0 11 mux
 dxi map ip 192.168.2.1 0 11



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