VOIP configuration over mpls link

Hi
we want to deploy voip for multiple location over the mpls lines we have between the multiple location can any body suggest the feasibility and how to do it and any related document and guidance for that
Thanks
Manish gaur

Hi,
what do you call a "mpls link"? Do you have an IP interface connecting to a MPLS network implemented by a provider or do you operate a MPLS network yourself?
In any case you might have a look at
1) Enterprise QoS Solution Reference Network Design Guide Version 3.3
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns432/c649/ccmigration_09186a008049b062.pdf
2) Layer 3 MPLS VPN Enterprise Consumer Guide Version 2
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns171/c649/ccmigration_09186a008077b19b.pdf
3) Various design guides for Unified communications
http://www.cisco.com/en/US/netsol/ns656/networking_solutions_design_guidances_list.html#anchor10
Hope this helps!
Regards, Martin

Similar Messages

Voip deployment over mpls link

Hi
we want to deploy voip for multiple location over the mpls lines we have between the multiple location can any body suggest the feasibility and how to do it and any related document and guidance for that
Thanks
Manish gaur

Manish,
That is probably the best way to connect multiple sites without having to connect each one with a T1, etc. Our MPLS vendor has an SLA on latency with 50ms or less guaranteed. With voice you want to make sure the latency is definitely less than 150ms. For ease of management we're using a router at each remote site with SRST capabilities so that all of the configuration remains at the main HQ callmanager, but if the connection ever goes down, the remote site phones will still be able to call each other (not main office until connection is restored) Alternatively you can put a router at each site with CallManager Express, you will just have to manage each site separately. Hope that helps a little.

DMVPN QoS Configuration over sat link

Hi everyone, having one of those days where I cant seem to see the trees through the forest! Hopefully someone can point the way :)
We have a DMVPN setup with Hub & spoke, 3 remote sites over satellite but the remote sites internet traffic does not come over the vpn, it goes out via the ISP.
One particular site we've been having flooding and packet loss issues with has now been increased from 256k to a 512Kb Cir and the ISP has allowed a 1536 burst - this is where im confused most!
Almost all examples of QoS i see is to limit/restrict the flow to less than the provider CIR is allowing to avoid them dropping packets, so in this scenario, how do I make the most of the burst rate?
The DMVPN is currently set up with QoS policies via IP nhrp map groups, shaping the tunnel to 256k then child maps prioritizing mgmt, Skype etc. Although this seems like a great idea, im being led to believe I should just have qos pre-classify on the tunnel and set the policy-map on the Internet interface, but what I cant work out is how to prioritize or allocate most of the bandwidth to the tunnel for 'work related' purposes and limiting web browsing as currently it seems http/https traffic it taking all the bandwidth!
If I don't use the bandwidth command on the physical interface it appears it believes it has 100m, so I think I need to set it 512k but not sure how to utilize the burst.
Then im guessing I should use something like priority percent and shape average percent to prioritize tunnel traffic over http but does qos then need to be configured on the Hub somewhere as well?
If anyone has a similar setup and can provide example config that would be great.
Any assistance is greatly appreciated, please let me know if you want any configs/outputs.
Cheers,
Kev

Thanks for the reply Marcin, however that doesn't really answer my question(s).
I am fully aware of per tunnel qos as well as HQos, im just no expert in either!
I understand that per tunnel qos applies the settings to the tunnel, but anything Not going via the tunnel will not have any qos applied and that currently seems to be the issue, naughty streaming media and http/https traffic flooding the link!
Using Hqos will apply to the whole link, but it seems I need qos-pre classify on the tunnel to apply before it gets encrypted, or should I just prioritise all GRE so that all tunnel traffic gets priority?
Perhaps I just have my settings too low, http(s) traffic takes all it can leaving work related tunnel traffic, email etc starved of BW.
If anyone has any example configs of similar setups that would be much appreciated, its easier for me to reverse engineer! :)
cheers,
Kev

Ask the Expert:Concepts, Configuration and Troubleshooting Layer 2 MPLS VPN – Any Transport over MPLS (AToM)

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

VoIP, Video Polycom over MPLS

Hi
Any one using Vidoe polycom and VoIP over MPLS? We have around 5 offices and they want to use Video Polycom over MPLS. If someone can provide Pro and Con for that and any document or link much appreciate it. Thanks in advance.
Sai

i havnt done polycom over mpls
but i would like to give u hints to consider it
the first think u need to know from the ISP what COS they put in as priorty and how many COS they provide u based on SLA and how match max traffic then they start to drop traffic
the other think is to know how the polycom mark the traffic and u need to calssifiy it and put it in proper calss based on the classes provided by the mpls ISP
good luck
and hope this helpful

Port Channel over L2 MPLS links

Hello.
I was hoping that someone could over some suggestions on best practice or recommendations for configuring port channel to bundle to layer 2 MPLS links that we have.
We have racks in two geographically separated data centres, each rack has a stack of Cisco 3850 switches, and there are two 100Mbps layer 2 connections linking these stacks together. The links are provided by our supplier and runs over their core network (I can get more info on their setup if need be).
I had initially just configured a simple port channel bundling the two ports on "Switch A", and the same on "Switch B". However I have since noticed that one of the ports was put into error disabled state, and I have my doubts that we ever had 200Mbps throughput over the portchannel.
The logs showed:
UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Gix/x/x, aggressive mode failure detected
%PM-4-ERR_DISABLE: udld error detected on Gix/x/x, putting Gix/x/x in err-disable state
How I understand is that one of ports recieved an unexpected (or incorrect) BPDU packet, and shut the port down as part of spanning tree process to stop a loop forming.
For the time being I have removed the port channel config and re-opened all the ports, so I believe one of the ports is now in blocking state.
Whilst redundancy for these links is great, ideally I would like to have the links bundled so I also get the benefit of higher throughput.
Any thoughts are greatly appreciated.
Thank you

Hi,
Thank you for your reply and suggestions. I have been reading up on layer 2 protocol tunnelling and I'm not sure if this will work for us. According to these guidelines for the catalyst 3550 (http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3550/software/release/12-1_19_ea1/configuration/guide/3550scg/swtunnel.html#wp1006657) it states:
•If you enable PAgP or LACP tunneling, we recommend that you also enable UDLD on the interface for faster link-failure detection.
•Tunneling is not supported on trunk ports. If you enter the l2protocol-tunnel interface configuration command on a trunk port, the command is accepted, but Layer 2 tunneling does not take affect unless you change the port to a tunnel port or an access port.
•EtherChannel port groups are compatible with tunnel ports when the 802.1Q configuration is consistent within an EtherChannel port group.
(maybe its a different and is supported on 3850's)
Also, I cant use layer 3 over this link as I am looking to extend VLANs over the link so devices and virtual machines in each of the datacentre are in the same subnet and broadcast domain.
I will speak with the supplier to see what they are willing to do.
Thanks again.

Sample Configuration For Ethernet over MPLS.

I am looking for a sample configuration and scenario for the Ethernet over MPLS.I would appreciate if I get some explaination with it.How the LDP is configured for the directed sessions (as per Martini draft) and the auto discovery (as per kompella draft) with respect to Ethernet over MPLS.Cam anyone help me in this ?

Here's a sample EoMPLS configuration on the PE routers:
R1:
interface Loopback0
ip address 1.1.1.1 255.255.255.255
interface Ethernet0/0.10
encapsulation dot1Q 10
! 10 = vcid must match the vcid configured on the other side
mpls l2transport route 2.2.2.2 10
R2:
interface Loopback0
ip address 2.2.2.2 255.255.255.255
interface Ethernet0/0.10
encapsulation dot1Q 10
mpls l2transport route 1.1.1.1 10
The LDP directed session will be setup automatically by the router when the xconnect statement is configured.
Cisco IOS doesn't support the Kompella Draft.
For more information, see the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t15/atomt/ftatomtb.htm
Hope this helps,

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
Helme

Hello 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

Cross connected calls over MPLS WAN

Hi,
I have an issue with one of my offices that has me extremely puzzled.
When users call users in other offices, sometimes the calls get cross-connected, where they are suddenly talking to another caller.
Our telephony provider is insisting it is my network, but I have this office router and switches configured the same as our other 5 offices that don't have this issue.
They are now trying to say it is an MPLS issue from our Telco, but I figure I would be seeing issues with data going over that link as well.
Has anyone ever experience this "crosstalk" before?
The routers at the offices are 2811/2851, with 10meg MPLS WAN between, and 3560/3750 PoE switches for the phones.
Any advice or tips would be greatly appreciated!

The 2851 at our head office is running 12.3(8)T8.
The 2821 at the remote office is running 12.3(8)T8 as well.
We are not using CCM, we are using a Mitel VoIP solution (which I hate and wanted to go with Cisco instead!), which is using Minet (shows as RTP traffic).

Reroute some vrf traffic between 2 sites over redundant link

hey guys,
We have a single client (in vrf) with 2 sites in different states and running over our mpls core.. Our primary link in our core is experiencing degredation of service and want to route this client over our redundant link while keeping all other clients going over our primary link - is this possible?
The client in question has its own vrf (L3VPN) at both sites and is running over mpls between both sites. We want to re-route this particular client to take our backup path, while keeping everyone else between both sites going over the primary. We are not using TE, instead LDP to build MPLS.
I don't believe this is possible to only re-route one client, however I thought I would ask the question.
We cannot failover to secondary link for everyone between both sites because the link doesn't have the capacity.
Thanks in advance.

Hi,
Using MPLS TE would certainly be an option. You would need to setup an MPLS TE LSP over the backup. You would also need to configure a separate lookback interface on each PE and use this loopback interface address as the next hop for the specific VRF
ip vrf X
bgp next-hop loopback 999
ip route 255.255.255.255 Tu1
This way you would make sure that only the traffic for this specific VRF would travel over the TE tunnel.
Regards

How to provied Redundancy for VRF MGMT with help of BGP over MPLS(MPBGP)

Hi,
Please find the Network Topology.
This is One Remote site and mamaged by Mgmt office.
All devices on remote site is accessed by MGMT Office. My organisation seek for Redundancy for Managing devices.
My administration is from MGW to R1. I am new to MPLS.
AS u can see in diagram, R1 have 3 VRF(Voice,Signal and MGMT).Currently i have primary link over whitch we are running MPBGP.
Traffic from these VRF goes to this primary link. Currently Secondary link is not connected.
Now my organisation proposed for the secondary link and they want that only traffic from VRF -- MGMT should go through MPLS RTR R2 (the secondary link ) , when the mgmt routes not learned from MPLS RTR R1 (Connected to the SP1 ).
Current R1 config
There is IBGP betweem R1 to both MPLS RTR.
BGP Config
router bgp 64513
synchronization disable
neighbor 10.36.150.1 remote-as 64513
neighbor 10.36.150.1 activate
neighbor 10.36.150.1 update-source loopback1
address-family ipv4 vrf signalling
    redistribute connected
    redistribute static
$
address-family ipv4 vrf voice
    redistribute connected
    redistribute static
$
address-family ipv4 vrf OAM-T
    redistribute connected
    redistribute static
$
address-family vpnv4
    neighbor 10.36.150.1 activate
    neighbor 10.36.150.1 send-community
$
!<ospfv2>
router ospf 100
interface gei-3/3
    network point-to-point
$
network 10.36.150.49 0.0.0.0 area 0.0.0.0 --- loopback ip (Configured)
network 10.36.149.60 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R1.(Configured)
network 10.36.149.64 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R2. ---------- (till now not configured as secondary link is not connected)
router-id 10.36.150.49
so what configuration need to done at R1 to achiev the redunancy for MGMT vrf ?
if possible please reply with sample configuration.
or
IN MPBGP protocol, where i will apply routing policy to apply as- path prepand    so that Route would be secondary to neighbor.
IGP-OSPF and BGP over MPLS is running.
on Which address-familiy nbr,should i apply, is it in VPNV4 or IPV4 or IPV4 VRF ?
if i want 10.36.128.0/26 prefix should go to Neigbhor MPLS R2, what should i use access-list or Prefix list?
please provide the reply with its config .
thanks in advance,
Regards,
Ajay
Message was edited by: Ajaykumar yadav

Hi,
Please find the Network Topology.
This is One Remote site and mamaged by Mgmt office.
All devices on remote site is accessed by MGMT Office. My organisation seek for Redundancy for Managing devices.
My administration is from MGW to R1. I am new to MPLS.
AS u can see in diagram, R1 have 3 VRF(Voice,Signal and MGMT).Currently i have primary link over whitch we are running MPBGP.
Traffic from these VRF goes to this primary link. Currently Secondary link is not connected.
Now my organisation proposed for the secondary link and they want that only traffic from VRF -- MGMT should go through MPLS RTR R2 (the secondary link ) , when the mgmt routes not learned from MPLS RTR R1 (Connected to the SP1 ).
Current R1 config
There is IBGP betweem R1 to both MPLS RTR.
BGP Config
router bgp 64513
synchronization disable
neighbor 10.36.150.1 remote-as 64513
neighbor 10.36.150.1 activate
neighbor 10.36.150.1 update-source loopback1
address-family ipv4 vrf signalling
    redistribute connected
    redistribute static
$
address-family ipv4 vrf voice
    redistribute connected
    redistribute static
$
address-family ipv4 vrf OAM-T
    redistribute connected
    redistribute static
$
address-family vpnv4
    neighbor 10.36.150.1 activate
    neighbor 10.36.150.1 send-community
$
!<ospfv2>
router ospf 100
interface gei-3/3
    network point-to-point
$
network 10.36.150.49 0.0.0.0 area 0.0.0.0 --- loopback ip (Configured)
network 10.36.149.60 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R1.(Configured)
network 10.36.149.64 0.0.0.3 area 0.0.0.0 ---- p2p ip bet R1 and MPLS R2. ---------- (till now not configured as secondary link is not connected)
router-id 10.36.150.49
so what configuration need to done at R1 to achiev the redunancy for MGMT vrf ?
if possible please reply with sample configuration.
or
IN MPBGP protocol, where i will apply routing policy to apply as- path prepand    so that Route would be secondary to neighbor.
IGP-OSPF and BGP over MPLS is running.
on Which address-familiy nbr,should i apply, is it in VPNV4 or IPV4 or IPV4 VRF ?
if i want 10.36.128.0/26 prefix should go to Neigbhor MPLS R2, what should i use access-list or Prefix list?
please provide the reply with its config .
thanks in advance,
Regards,
Ajay
Message was edited by: Ajaykumar yadav

Cell-relay over MPLS using MGX 8850

we have existing ATM network using TDM links between MGX 8850 & have PVCs for voice & data traffic. We are planning to migrate the same over MPLS network
following is the setup.
MGX1----> PE1 ------>MPLS Cloud ------> PE2 ---->MGX2
As per this plan we will terminate existing TDM trunks to PE routers at both the end & map VPI/VCI values at PE routers for virtual ATM pvcs over MPLS cloud.We are using cell-relay over MPLS with VC mode. My query is, can we enable MPLS L3 & L2 on the same last mile in this scenario? We want to have one IP over ATM interface on same ATM interface at PE router & make that part of VRF & enable L3 MPLS VPN between all the sites for any to any data transfer. For data we don't want to use L2 MPLS as its any to any & it will end up with too many ATM PVCs.
In this setup PE router & MGX will be configured in NNI-NNI at both end. If we want to create one sub-interface at same ATM interface at PE router end, then that port need to be in UNI. Is it possible to use same ATM trunk port as NNI & UNI?
In MGX 8850 we have RPM,AXSM & VISM modules.

the following document should give you some idea,
http://www.cisco.com/en/US/products/hw/modules/ps2797/products_module_installation_guide_chapter09186a0080086f9a.html

PBR on MPLS link

Hi ,
We have 2 MPLS Link with 100 Mbps of 2 service provider .
PBR Is configured on primary router .
PBR CONF
interface GigabitEthernet0/0.130
encapsulation dot1Q 130
ip address 10.10.10.1 255.255.255.240
ip policy route-map SANTTML
route-map SANTTML permit 10
match ip address SANTTML
set ip next-hop 10.136.22.6
ip access-list extended SANTTML
permit ip host 10.136.100.8 host 10.132.22.8
permit ip host 10.136.100.10 host 10.132.22.8
When we sending data from our server 10.136.100.10 to 10.132.22.8 traffic is out from second router,
but at receive only primary router.
Is there any MPLS routing issue
Please help .
Sanjay Nalawade.

Hi Sanjay
My viewpoint on your traffic flow requirements.
First let me put forward my understanding of your network setup.
You have taken MPLS VPN Services from 2 Different Service Providers and you want to achieve source-based routing between a pair of Source & Destination utilizing a particular ISP Uplink. Is that Correct.
If thats so, the PBR will only help to control the Forward Traffic and decide to choose which ISP Uplink to use depenind upon the Source.
For controlling the reverse traffic for the same pair of source-destination over that particular ISP you need to manipulate the route advertisement for that particular source making the Particular ISP as preferred and keeping the other ISP as backup for that particular source network.
Say for example if you are using BGP then doing an AS-Path Prepend for the Source Network you are doing PBR on the backup ISP will help achive you desired results for using a particlar ISP preferred for both Uplink and Downlink with respect to a particular destination.
Hope it Helps
Thanks & Regards
Vaibhava Varma

WRED om MPLS links

Hi
On MPLS based on 7500 routers, want to configure WRED on MPLS trunks. In each class I should configure the random-detect command, that can be based on IP Precedence or DSCP. My question is if the random detect shouldn´t be based on EXP bit value, like matches on class maps for MPLS links are based on EXP instead of Ip Prec or DSCP, because on DSCP links we see only the label. So, to configure WRED on MPLS trunks, does it look inside each IP packet, and it is it based on IP Prec or DSPC, or is there any way to configure WRED based on EXP value? What is the recomended configuration? Also, if possible, are there default values with lower-drop probabilities for higher priority classes?

You can use IPPrec to match exp, below configuration i have tested and its working on the MPLS network.
Class COS2
bandwidth remaining percent 53
random-detect precedence-based
random-detect precedence 3 10366 packets 16586 packets 1
random-detect precedence 4 12440 packets 18659 packets 1
Class COS3
bandwidth remaining percent 27
random-detect precedence-based
random-detect precedence 1 8293 packets 14513 packets 1
random-detect precedence 2 10366 packets 16586 packets 1

Redundancy and Failover setup for 2 MPLS link with 2 different countries

Hi Sir/Madam,
We have 2 MPLS link and both links are active (from COUNTRY A to COUNTRY B) and we also have 2 partners who are located in COUNTRY B with same building but with different offices and each partner will be using each MPLS link. For example, PARTNER A will use the 1st MPLS link and PARTNER B will use the 2nd MPLS link and we want to have a failover setup (please see sample design below). What is the best solution for COUNTRY A and B to have a full redundancy and failover setup/network?
Any recommendation and sample configuration will be a big help for me. Your feedback is highly appreciated.
Thank you in advance.
Best regards,
Marvin

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Posting
MPLS links, eh. You mean your MPLS facing ports have actual MPLS labels? Or do you mean your WAN links are running across a MPLS network, but the handoff isn't MPLS?
Country A's two routers are your company's devices? Do you have interior connectivity between them?
Country B's two routers - do they or can they have interior connectivity?
What routing protocols are being used (and where)?

VOIP configuration over mpls link

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