From: Andrew Bratchell (a.bratchell@caeuk.com)
Date: Mon Nov 04 2002 - 10:55:18 GMT-3
Prio,
By default when configuring ATM PVC's the "new way" i.e. not using map-lists and map groups as in the example I gave to Angelo, the default encapsulation is AAL5SNAP.
When using map-lists and map-groups, yes you do need to define the encapsulation which would either be AAL5SNAP (multiple protocols allowed through the same PVC) or AAL5MUX (single protocol per PVC).
Andy
-----Original Message-----
From: Prio Utomo [mailto:rionaldi@cbn.net.id]
Sent: 04 November 2002 03:51
To: Andrew Bratchell
Subject: Re: ATM
Dear Andrew,
I did not see any encapsulation type in this configuration. Is it not
necessary?
regards,
Prio Utomo
----- Original Message -----
From: "Andrew Bratchell" <a.bratchell@caeuk.com>
To: "Angelo De Guzman" <ghie_pogi@yahoo.com>
Cc: <a.deguzman@wesolv.com.ph>; <ccielab@groupstudy.com>
Sent: Saturday, November 02, 2002 7:55 PM
Subject: RE: ATM
> Angelo,
> You show see the PVC straight away.
> If executing show atm pvc gives you nothing, then consider the following:
>
> 1st) the ATM switch must be configured with a PVC, I'm not sure if you
have your own ATM switch or you are using a rental rack. If the latter, then
some rental racks have the ATM switch preconfigured, some don't.
>
> 2nd) Some ATM switches do not support PVC discovery, the LS1010 (which is
what you would use in the CCIE lab) does, the LS100 does not. Therefore, if
using a rental rack source, find about about the ATM switch and what it
supports.
>
> Here is a sample ATM PVC config for an LS1010.
>
> interface ATM0/1/1
> no ip address
> no ip directed-broadcast
> no atm ilmi-keepalive
> atm pvc 5 50 interface ATM0/1/0 6 60
>
> The last line is saying that on ATM interface 0/1/1 the PVC is using a
VPI/VCI pair of 5/50 and the other side of the PVC is using a VPI/VCI pair
of 6/60 which is be routed out of ATM interface 0/1/1.
>
> Thus, for router R1 that is connected to 0/1/1 you would expect to see
VPI/VCI pair 5/50.
> For router R2 that is connected to 0/1/0, you would expect to see VPI/VCI
pair 6/60.
>
> NOTE - You do not need another PVC statement on ATM0/1/0 that says that
the VPI/VCI pair of 5/50 is routed out of ATM0/1/1.
> In this respect, configuring ATM PVC's is different from configuring
Frame-Relay PVC's.
>
> Hope this helps you.
>
> Andy
> -----Original Message-----
> From: Angelo De Guzman [mailto:ghie_pogi@yahoo.com]
> Sent: 02 November 2002 04:19
> To: Andrew Bratchell
> Cc: a.deguzman@wesolv.com.ph
> Subject: RE: ATM
>
>
> Andrew & to all,
> Thanks! How many minutes will I have to wait before
> I can see the pvc in the show atm pvc?
> Thanks in Advance,
> Angelo De Guzman
>
>
> --- Andrew Bratchell <a.bratchell@caeuk.com> wrote:
> > Angelo,
> >
> > 1) You must discover the VPI/VCI pair that has been
> > assigned to you (what is configured on the ATM
> > switch) using the commands :-
> > atm ilmi-pvc-discovery
> > pvc 0/16 ilmi
> >
> > You have done this already.
> > Next to see what the VPI/VCI pair is, execute the
> > show atm pvc command.
> > If you have a pair like 5/53 for example in which 5
> > is the VPI and 53 is the VCI, then create your PVC
> > accordingly
> >
> > interface ATM1/0
> > ip address 1.1.1.1 255.255.255.0
> > atm ilmi-keepalive
> > pvc CCIE 5/53
> > protocol ip 1.1.1.2 broadcast
> > !
> > NOTE you can remove the pvc 0/16 ilmi and
> > pvc-discovery statements.
> > If routing protocol traffic is passing through the
> > PVC, then you need to make sure that the broadcast
> > keyword is applied.
> > In my example we are saying to reach ip address
> > 1.1.1.2 go through PVC CCIE which has a VPI of 5 and
> > VCI of 53.
> >
> > This example shows the new way of creating a PVC
> > (post 11.3) rather than using map-lists which was
> > the old way. If you are creating traffic classes etc
> > for ATM then you need to do it using the new way
> > rather than map lists. There are some good TAC docs
> > that explain the differences.
> >
> > Finally so you can see what the config would be like
> > using map-lists :-
> >
> > interface ATM1/0
> > ip address 1.1.1.1 255.255.255.0
> > atm pvc 1 5 53 aal5snap
> > map-group CCIE
> > !
> > map-list CCIE
> > ip 1.1.1.2 atm-vc 1 broadcast
> >
> >
> > Notice that when using map-lists we specify the
> > command atm pvc NOT pvc. Also the number 1 refers to
> > the VCD which you also have to define. This VCD
> > value matches with our map-list statement (atm-vc-1)
> >
> > Hope this helps.
> > Thanks
> > Andy
> >
> > -----Original Message-----
> > From: Angelo De Guzman [mailto:ghie_pogi@yahoo.com]
> > Sent: 01 November 2002 12:35
> > To: ccielab@groupstudy.com
> > Subject: ATM
> >
> >
> > Hi,
> > I'm trying to this.
> >
> > ATM Configuration:
> > Configure R7 using the following information so you
> > can connect to the router in the ATM cloud.
> > - You must discover your VPI/VCI pair, and then
> > manually configure them in your configuration.
> > - Configure the ATM interface IP address to have its
> > last octet equal to the pod #.
> > - You may not use map-lists in your ATM
> > configuration.
> >
> > I can't make this work. I really don't have an idea
> > how to make this work. Any idea on what is the other
> > side of this ATM connection?
> >
> >
> > My config:
> >
> > interface ATM1/0
> > no ip add
> > atm ilmi-keepalive
> > atm ilmi-pvc-discovery
> > pvc 0 0/16 ilmi
> > !
> > R7#sh atm ilmi-status
> > Interface : ATM1/0 Interface Type : Private UNI
> > (User-side)
> > ILMI VCC : (0, 16) ILMI Keepalive : Disabled
> > ILMI State: UpAndNormal
> > Peer IP Addr: 0.0.0.0 Peer IF Name:
> > ATM0/0/0
> > Peer MaxVPIbits: 8 Peer MaxVCIbits:
> > 14
> > Active Prefix(s) :
> > 47.0091.8100.0000.0031.8019.2d01
> > R7#
> >
> > Thanks,
> > Angelo
> >
> >
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