From: backbone systems (backbone.systems@gmail.com)
Date: Mon Mar 30 2009 - 02:51:18 ART
:)
Perfect Guys..........
i luv u all.........................
BB
On Mon, Mar 30, 2009 at 1:30 AM, Roman Rodichev <roman@iementor.com> wrote:
> Yep, that's exactly what I meant.
>
>
> -----Original Message-----
> From: Antonio Soares [mailto:amsoares@netcabo.pt]
> Sent: Sunday, March 29, 2009 5:28 PM
> To: 'Roman Rodichev'; 'backbone systems'; 'Cisco certification'; 'Cisco
> certification'
> Subject: RE: ATM CELL MODE SWITCHING - CAN NOT PING ACROSS
>
> Fantastic explanation. It was the first time i did MPLS Cell Mode over ATM
> PVCs and it works as you said.
>
> With dynamips, we just need to add some more entries like this:
>
> ############################################################################
> ######
> [[ATMSW ATMSW]]
>
> 7:0:708 = 8:0:807
> 7:1:33 = 8:1:33
> 7:1:34 = 8:1:34
> 7:1:35 = 8:1:35
> ############################################################################
> ######
>
>
> Thanks.
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares@netcabo.pt
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Roman Rodichev
> Sent: domingo, 29 de Margo de 2009 19:43
> To: 'Antonio Soares'; 'backbone systems'; 'Cisco certification'; 'Cisco
> certification'
> Subject: RE: ATM CELL MODE SWITCHING - CAN NOT PING ACROSS
>
> Control VCs don't have to match on both sides (with both vp-tunnel and vpi
> modes).
>
> Backbone, I assume you have an ATM switch (dynamips?) in the middle and you
> are switching VC 0/109 to VC 0/901. That's fine
> actually, your control VC will come up. You can try show atm vc, and you
> should see VPI/VCI 0/109 PVC with AAL5SNAP encapsulation UP
> on one side, and VPI/VCI 0/901 PVC with AAL5SNAP encapsulation UP on the
> other side.
>
> You have configured VPI mode VPI 0, this means that both sides will attempt
> to assign ATM labels for the prefixes starting from
> VPI/VCI 0/33 and go up (0/34, 0/35, etc.) Your atm switch must have VC 0/33
> on R1 port switched to VC 0/33 on R9 port, and so on
> (0/34 to 0/34, 0/35 to 0/35, etc). Or you can just switch VPI 0 to VPI 0,
> but then, as Antonio mentioned, you'll need to match
> control VCs on both sides (they are by default set to 0/32).
>
> Once ATM-LDP detects matching label space range, you will start seeing
> additional "TVCs" show up in the "show atm vc" output.
> (They'll be using AAL5MUX encap). There will be a UNIDIRECTIONAL TV for each
> OSPF prefix that you advertise. If you have 3 loopbacks
> on R1 and 3 loopbacks on R9, you should see total of six TVCs (0/33, 0/34,
> 0/35, 0/36, 0/37, 0/38).
> You can also use vp-tunnel mode in which case you could for example switch
> VPI 0 to VPI 1 on your switch and then configure both
> sides like this:
>
> R1
> interface ATM1/0.1 mpls
> tag-switching atm vp-tunnel 0
>
> R9
> interface ATM1/0.1 mpls
> tag-switching atm vp-tunnel 1
>
> control VC will automatically be set to 0/32 on R1 and 1/32 on R9
>
>
>
>
> Roman Rodichev
> 5xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider) Instructor,
> Content Developer ieMentor Corporation
> http://www.iementor.com
> Y!M: roman7927
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Antonio Soares
> Sent: Sunday, March 29, 2009 1:15 PM
> To: 'backbone systems'; 'Cisco certification'; 'Cisco certification'
> Subject: RE: ATM CELL MODE SWITCHING - CAN NOT PING ACROSS
>
> With cell-mode, you must have a valid LDP/TDP adjacency. And here you have
> mismatching control-vc's.
>
>
> Regards,
>
> Antonio Soares, CCIE #18473 (R&S)
> amsoares@netcabo.pt
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> backbone systems
> Sent: domingo, 29 de Margo de 2009 17:44
> To: Cisco certification; Cisco certification
> Subject: ATM CELL MODE SWITCHING - CAN NOT PING ACROSS
>
> hi,
>
> i have a scenario where R1 - R9 and connected over atm interface with
> tag-switching......i am running ospf over the interface....Now
> my ospf relationship is established successfully but i can not ping the
> routes ?????
>
> Why is that....i am not getting it.....
>
> R1
>
> interface ATM1/0.19 tag-switching
> ip address 150.1.101.1 255.255.255.0
> no ip directed-broadcast
> no atm enable-ilmi-trap
> snmp trap link-status
> mpls ldp discovery transport-address interface mpls label protocol ldp
> tag-switching atm control-vc 0 109 tag-switching atm vpi
> 0 tag-switching ip
>
> R9
>
> interface ATM1/0.91 tag-switching
> ip address 150.1.101.9 255.255.255.0
> no ip directed-broadcast
> no atm enable-ilmi-trap
> snmp trap link-status
> mpls ldp discovery transport-address interface mpls label protocol ldp
> tag-switching atm control-vc 0 901 tag-switching atm vpi
> 0 tag-switching ip
>
>
> let say on R9 i can see the routes
>
> R9#sh ip route ospf
> 1.0.0.0/32 is subnetted, 4 subnets
> O 1.1.3.3 [110/50] via 150.1.101.1, 00:19:37, ATM1/0.91
> O 1.1.2.2 [110/50] via 150.1.101.1, 00:19:37, ATM1/0.91
> O 1.1.1.1 [110/2] via 150.1.101.1, 00:19:37, ATM1/0.91
> 131.1.0.0/29 is subnetted, 3 subnets
> O 131.1.12.0 [110/49] via 150.1.101.1, 00:19:37, ATM1/0.91
> O 131.1.13.0 [110/49] via 150.1.101.1, 00:19:37, ATM1/0.91
> O 131.1.23.0 [110/97] via 150.1.101.1, 00:19:37, ATM1/0.9
>
> but i can not ping any of the routes?????
>
> R9#sh mpls ldp dis
> Local LDP Identifier:
> 1.1.9.9:0
> Discovery Sources:
> Interfaces:
> ATM1/0.91 (ldp): xmit/recv
> LDP Id: 131.1.13.1:1; IP addr: 150.1.101.1; no host route R9#
>
> i am missing something basic???? can anyone explain ?????
>
>
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