Mpls over atm ppp over aal5
Hi,
Does cisco support mpls over atm-ppp-llc
per RFC 2354(PPP over AAL5).
Something like a scenario if Cisco acts as a PE and it gets frames with mpls over atm-ppp-llc from a connected CE ,is it supported in cisco , or it will drop the frames ?
Running mpls over ce-pe link is mandatory for the specific scenario.
Thanks
Thanks in advance
Hello,
The MPLS should be supported also on PPP over AAL5. Simply use the "mpls ip" command on the Virtual-Template or the Dialer interface you are using on top of the ATM VC to set up the PPP interface.
The 3640 with proper IOS can support the PE functions. The Enterprise feature sets should be equipped with all features necessary to provide a PE router functionality - basically, the VRF, MPLS, LDP, MPLS VPN support, BGP, BGP VPNv4 support, IGP protocols with VRF support and that should be sufficient.
Best regards,
Peter
Similar Messages
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could you compare this tehnologies and explaing it to me?? thanks!
Any Transport over MPLS (AToM) is the Cisco solution for transporting Layer 2 traffic over an IP or MPLS backbone. AToM extends the usability of the IP/MPLS backbone by enabling it to offer both Layer 2 and Layer 3 services. The AToM product set accommodates many types of Layer 2 frames, including Ethernet, Frame Relay, ATM, PPP and HDLC, across various Cisco router platforms, such as the Cisco 12000 Series routers and the Cisco 7600, 7500, and 7200 routers.
This URl should help you:
http://www.cisco.com/en/US/netsol/ns675/networking_solutions_white_paper09186a008009d4d7.shtml -
Welcome to the MPLS over ATM Discussion
Welcome to the Cisco Networking Professionals Connection Service Provider Forum. This conversation will provide you the opportunity to discuss issues surrounding MPLS over ATM. We encourage everyone to share their knowledge and start conversations on issues such as Frame-based MPLS networks, multiservice networks, VPN scalability, multiple service classes, multicast, VoIP and any other topic concerning MPLS over ATM.
Remember, just like in the workplace, be courteous to your fellow forum participants. Please refrain from using disparaging or obscene language or posting advertisements.
We encourage you to tell your fellow networking professionals about the site. If you would like us to send them a personal invitation simply send their names and e-mail addresses along with your name to us at [email protected]This is easily done with dial peer statements . The dial peer in your originating router must route the calls to the terminating router first. That would look like :
dial-peer voice xxxxx voip ( the xxxxx is just a tag)
destination-pattern 45... (that would route any 5-digit calls beginning with 45)
session-target ipv4:xxx.xxx.xxx.xxx (ip address of the terminating router)
If digitones are to be dialed after the connection is established, use the statement:
dtmf-relay-h.245-alphanumeric
You could also use a statement to specify the codec to be used:
codec g711ulaw
You would need multiple voip dial peers if the calls were going to different routers based on the dialed digits. If all calls are sent to the same terminating router, use all wild cards in the dest-pattern statement.
At the terminating router configure pots dial peers:
dial-peer voice xxxxx pots
dest-pattern 45...
port x/x (whichever port the call is to be terminated on)
prefix 45 (this re-inserts matched digits which are stripped off by the pots dp)
Repeat for other ports which will receive calls.
Paul -
MPLS over ATM - VP Tunnel (cell) or VC (frame)?
Does anybody use the MPLS over VP tunnel with the Cisco 8540 ATM MPLS core? Is it a stable solution or one should better leave the ATM MPLS cell mode and convert to frame mode over ATM?
Both Cell mode and frame mode are stable solutions. But the scenario where we use them are different. I see that Cisco 8540 ATM MPLS Core is used. In this case, I would say that cell mode MPLS is a better solution for the following reason(s); In normal (non-MPLS) ATM core the L2 topology might be different from L3 topology. Say for example, a destination IP (a.b.c.d) might be shown as 3 hops (routers) away but there can be even 10 or more ATM switches in between. In this case the L2 topology might not be an optimal path. Hence we go for cell mode operation, where we form a full mesh topology and hence an optimal path.
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Hello,
During I was doing an MPLS interoperability test between our ATM-LER and Cisco 7204 router, I found an implementation difference wrt MPLS over ATM encapsulation between two systems. Our system encapsulates an MPLS packet with null shim label(=0), while Cisco router does it with non-null shim label(!= 0), I guest it may be a VCD value that is internally used in Cisco system. I think that an MPLS over ATM packet should be encapsulated with null label value in the top shim header in accordance with RFC 3035 described below.
"If the packet has a label stack with n entries, it MUST carry a shim with n entries. The actual value of the top label is encoded in the VPI/VCI field. The label value of the top entry in the shim (which is just a "placeholder" entry) MUST be set to 0 upon transmission, and MUST be ignored upon reception. The packet's outgoing TTL, and its CoS, are carried in the TTL and CoS fields respectively of the top stack entry in the shim."
Any response will be greatly appreciated.
Best regards,
Yongjun.No, I'm NOT requesting a new feature, but talking about compliance with
the MPLS standard, RFC 3035, "MPLS using LDP and ATM VC Switching". What I'm saying is that Cisco router sends an MPLS packet on LC-ATM interface with a VCD (some sort of connection identifer in Cisco router) value set on the top-of-stack label, while the standard specifies the top-of-stack label should be used only for a placeholder and thus MUST be set to '0'. To my best knowledge, most of edge ATM-LSR systems set the top label value to '0' in accordance with RFC 3035. If the ingress edge ATM-LSR (Cisco) forwards an MPLS packet with non-zero label on the top-of-stack, then the egress ATM-LSR has two choices, one is just to ignore the non-zero label value, (causing no problem), the other is to discard the MPLS packet because the top-of-stack label should have been zero and non-zero is invalid. If any implementation selects the latter option, it may not be possible to interoperate with Cisco system through LC-ATM interface.
Regards,
Yongjun. -
MPLS over ATM and Private IP addresses
Are there any caveats using private IP addresses at one site and public registered IP addresses at another site connecting with MPLS over ATM thru our ISP?
No. You should be able to configure this using NAT.
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With Vignesh R. P.
Welcome to the Cisco Support Community Ask the Expert conversation.This is an opportunity to learn and ask questions about concept, configuration and troubleshooting Layer 2 MPLS VPN - Any Transport over MPLS (AToM) with Vignesh R. P.
Cisco Any Transport over MPLS (AToM) is a solution for transporting Layer 2 packets over an MPLS backbone. It enables Service Providers to supply connectivity between customer sites with existing data link layer (Layer 2) networks via a single, integrated, packet-based network infrastructure: a Cisco MPLS network. Instead of using separate networks with network management environments, service providers can deliver Layer 2 connections over an MPLS backbone. AToM provides a common framework to encapsulate and transport supported Layer 2 traffic types over an MPLS network core.
Vignesh R. P. is a customer support engineer in the Cisco High Touch Technical Support center in Bangalore, India, supporting Cisco's major service provider customers in routing and MPLS technologies. His areas of expertise include routing, switching, and MPLS. Previously at Cisco he worked as a network consulting engineer for enterprise customers. He has been in the networking industry for 8 years and holds CCIE certification in the Routing & Switching and Service Provider tracks.
Remember to use the rating system to let Vignesh know if you have received an adequate response.
Vignesh might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Service Provider sub-community discussion forum shortly after the event. This event lasts through through September 21, 2012. Visit this forum often to view responses to your questions and the questions of other community members.Hi Tenaro,
AToM stands for Any Transport over MPLS and it is Cisco's terminology used for Layer 2 MPLS VPN or Virtual Private Wire Service. It is basically a Layer 2 Point-to-Point Service. AToM basically supports various Layer 2 protocols like Ethernet, HDLC, PPP, ATM and Frame Relay.
The customer routers interconnect with the service provider routers at Layer 2. AToM eliminates the need for the legacy network from the service provider carrying these kinds of traffic and integrates this service into the MPLS network that already transports the MPLS VPN traffic.
AToM is an open standards-based architecture that uses the label switching architecture of MPLS and can be integrated into any network that is running MPLS. The advantage to the customer is that they do not need to change anything. Their routers that are connecting to the service provider routers can still use the same Layer 2 encapsulation type as before and do not need to run an IP routing protocol to the provider edge routers as in the MPLS VPN solution.
The service provider does not need to change anything on the provider (P) routers in the core of the MPLS network. The intelligence to support AToM sits entirely on the PE routers. The core label switching routers (LSRs) only switch labeled packets, whereas the edge LSRs impose and dispose of labels on the Layer 2 frames.
Whereas pseudowire is a connection between the PE routers and emulates a wire that is carrying Layer 2 frames. Pseudowires use tunneling. The Layer 2 frames are encapsulated into a labeled (MPLS) packet. The result is that the specific Layer 2 service—its operation and characteristics—is emulated across a Packet Switched Network.
Another technology that more or less achieves the result of AToM is L2TPV3. In the case of L2TPV3 Layer 2 frames are encapsulated into an IP packet instead of a labelled MPLS packet.
Hope the above explanation helps you. Kindly revert incase of further clarification required.
Thanks & Regards,
Vignesh R P -
I want to write a java program interacting with IP over ATM network, please can I use URL the same to API for IP, example : openConnection().
Thanks for all help,
Abdeltif.If your code only needs to manipulate IP functions, then the ATM layer should be transparent. The URL class, Socket class, etc. shouldn't care whether the IP is over Frame Relay, ATM, etc. Some ISPs buy ATM connections so your Internet connectivity might be riding over ATM.
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Configuring CE-PE link on Frame Relay over ATM
Hi!
Need you guys expert opinion on how to configure configuring CE-PE link on Frame Relay over ATM. I am stump by this one because I never done it before. The CE is a Cisco 7206 with ATM PA and the parameters given to us is DLCI number in x/y format...isn't that the format for PVC. When asked, my SP contact says that it is indeed FR over ATM. Any of you guys who have experience to guide on this or point me in the right direction is most welcome. Thanks
Rgds
HelmeHello Helme,
ask your provider if they are doing FR to ATM service interworking.
In that case one side is configured for Frame-Relay and the other side for ATM
Service interworking is done by provider.
Verify that you have the same MTU on both sides and configure following ISP specifications
ATM uses two numbers to identify a PVC
int atm 4/0
no ip address
no shut
int atm 4/0.1 point-to-point
mtu 1500
ip address x.x.x.1 255.255.255.252
pvc x/y
enc aal5snap
protocol ip x.x.x.2 broadcast
this should be enough to have it working
on the other side configure or have a point-to-point subif configured on FR
see this example
http://www.cisco.com/en/US/tech/tk39/tk53/technologies_configuration_example09186a00801747e3.shtml
Hope to help
Giuseppe -
PPP over L2TP with RADIUS Failed
Hi, I'm getting a CodeRej when I try do a PPP over L2TP dynamic using a Radius in a debian OS.
RegardsOk, Ok i admit it was my fault to not use that common and sometimes strangely new feature probably older than me called "SEARCH"
I checked another discussion regarding the same subject and it turned out by their knowledge that ACS 5.x manage
TACACS+ only for Device Administration
RADIUS for Network Access
Any other way doesn't work...any other opinion? ( i just can't help the fact that Cisco doesn't let use TACACS+ for PPP Authentication...does anybody knows why?) -
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BLANK Cloud Screen http://forums.adobe.com/message/5484303
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Can we perform Lag Over or Lead Over operation on Cursors?
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Can we perfrom Lag Over and Lead Over operations on cursors?
If possible, could you please explain in detail?
Any suggesitions are welcome.
Thanks and regards
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Not completely true since 9i:
http://download-east.oracle.com/docs/cd/B10501_01/appdev.920/a97269/pc_06sql.htm#8582
Message was edited by:
Kamal Kishore -
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Please i need some information about configuring MPLS and ATM and the addcon command
thanksPlease look at the following documents and let me know if they address the questions you have.
Integrating MPLS with IP and ATM :
http://www.cisco.com/en/US/partner/products/sw/ps2346/ps99/products_configuration_guide_chapter09186a00800ee108.html
Configuring MPLS with the BPX Switch and the 6400/7200/7500 Routers:
http://www.cisco.com/en/US/partner/products/sw/ps2346/ps99/products_configuration_guide_chapter09186a00800ee112.html
Designing MPLS for ATM:
http://www.cisco.com/en/US/partner/products/sw/ps2346/ps99/products_configuration_guide_chapter09186a00800ee110.html
Let me know if this helps,
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