From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sun Jan 11 2004 - 23:55:01 GMT-3
John,
You will not find a working configuration between two Cisco routers
because the routers can not initiate a connection between them using PPP
over ATM SVCs. The routers will never try to setup the SVC when using PPP
over ATM SVC as of IOS 12.2T. This is what the restriction means in the
release notes by "does not support PPP over ATM SVC dialout". PPP over ATM
SVC can only be used on a Cisco router as a 'receive only' configuration.
The router can not initiate the connection (SVC) itself.
If you want to try it for yourself, configure an ATM SVC between two
routers. Ping across to make sure that it works. Then add the PPP related
configuration (virtual-template, aal5auto encapsulation, move the IP address
to virtual-template, etc) and then try to ping. You won't be able to ping
because the routers will never attempt to setup the SVC as per the
restriction of not supporting dialout. Dialout translates to not being able
to initiate the SVC connection. If the routers can not initiate the SVC
setup, they will never be able to connect.
Are you by chance looking for a configuration between a DSL modem
and a Cisco router? If so the Cisco router configuration in the link below
will work.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guid
e09186a0080080295.html
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: John Matijevic [mailto:matijevi@bellsouth.net]
Sent: Sunday, January 11, 2004 6:28 PM
To: Brian Dennis; ccielab@groupstudy.com
Subject: Re: ATM PPP OVER SVC
Thanks Brian,
Thats great, however, I am looking for a working configuration, or if
someone has implemented before to please post configuration that worked for
him/her.
Sincerley,
Matijevic
----- Original Message -----
From: "Brian Dennis" <bdennis@internetworkexpert.com>
To: "'John Matijevic'" <matijevi@bellsouth.net>; <ccielab@groupstudy.com>
Sent: Sunday, January 11, 2004 6:10 PM
Subject: RE: ATM PPP OVER SVC
> Here are the restrictions for this feature:
>
> Restrictions
> The PPP over ATM SVCs feature does not support PPP over ATM SVC dialout
> mode.
>
>
http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guid
> e09186a0080080295.html#1015337
>
> Before implementing a feature or technology, it is important to look for
any
> requirements and/or restrictions listed in the documentation. In this
case,
> the restriction is that a router can not be used to initiate the SVC.
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
John
> Matijevic
> Sent: Sunday, January 11, 2004 2:52 PM
> To: asadovnikov; 'Kaiser Anwar'; ccielab@groupstudy.com
> Subject: Re: ATM PPP OVER SVC
>
> Hello Alexi,
> I tried to test your command over the weekend and was not able to get ppp
> over svc to work. Specifically I had problem with the following:
> svc ppp-call nsap BC.CDEF01234567890ABCDEF012.345678901334.13
> encapsulation aal5mux ppp virtual-template 1
>
> I could enter the svc command but underneath it,
> I could not set the encapsulation to ppp in otherwords I got as far as
> encapsulation aal5mux, then I did not have option for PPP.
> If anyone has gotten this to work with SVC, I would like to know. I have
> tried via doccd, configuration and cisco.com, but with no success.
> Also, I got this to work with PVC no problem.
> Sincerley,
> John
> ----- Original Message -----
> From: "asadovnikov" <asadovnikov@comcast.net>
> To: "'Kaiser Anwar'" <kaiseranwar@sbcglobal.net>; <ccielab@groupstudy.com>
> Sent: Thursday, December 25, 2003 7:58 PM
> Subject: RE: ATM PPP OVER SVC
>
>
> > The configuration you provided will accept SVC calls, but not initiate
> them.
> > If you use this configuration you need to configure another side such as
> it
> > will initiate SVC call to this router, i.e. specify the NSAP address of
> this
> > router under SVC of another one. Here is an example (I have not tried
it
> > before posting though):
> >
> > On another router...
> >
> > interface Loopback0
> > ip address 192.168.2.1 255.255.255.0
> > !
> > interface ATM0/0
> > no ip address
> > atm nsap-address BC.CDEF01234567890ABCDEF012.345678901300.00
> > no atm ilmi-keepalive
> > pvc 0/5 qsaal
> > !
> > pvc 0/16 ilmi
> > !
> > svc ppp-call nsap BC.CDEF01234567890ABCDEF012.345678901334.13
> > encapsulation aal5mux ppp virtual-template 1
> > !
> > interface Virtual-Template1
> > ip unnumbered Loopback0
> > !
> >
> > You would obviously need to configure NSAP addresses in accordance with
> what
> > you got on the switch.
> >
> > Best regards,
> > Alexei
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Kaiser Anwar
> > Sent: Wednesday, December 24, 2003 12:58 AM
> > To: ccielab@groupstudy.com
> > Subject: ATM PPP OVER SVC
> >
> >
> > HI,
> > I have a config here, according to the doc cd I am not missing anything
> but
> > it is not working. here is the config. I am using pvc 0/5 qsaal and 0/16
> > ilmi. they are not in the doc cd. but I tried it without them too.it
does
> > not say to statically map it. thanks in advance.
> >
> > interface Loopback0
> > ip address 192.168.1.1 255.255.255.0
> > interface ATM0/0
> > no ip address
> > atm nsap-address BC.CDEF01234567890ABCDEF012.345678901334.13
> > no atm ilmi-keepalive
> > pvc 0/5 qsaal
> > !
> > pvc 0/16 ilmi
> > !
> > svc ppp
> > encapsulation aal5auto
> > protocol ppp Virtual-Template1
> >
> > interface Virtual-Template1
> > ip unnumbered Loopback0
> >
> >
> > Sincerely,
> > Kaiser Anwar
> >
> > _______________________________________________________________________
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