MPLS quastion

[ahmad.alzaben]

hi all,

1-      I have 2 sites and each site have router 3900 series

2-      The customer want to connect this sites through ISP by MPLS technology

3-      The ISP will configure this MPLS

4-      My role is enabling the Cisco routers to be adapted with MPLS configuration

5-      I received licenses to enable MPLS features on Cisco Routers and I installed it on the tow routers

6-      But kindly I want the other required configuration on the routers step by step with the commands .

7-      And if you have documents which may help me kindly send it for my mail  .

Regards ,

Ahmad

[leon.mflai]

What is your role of your routers? PE or CE?

If your router are CE, you gonna just need to have IGP routing peering with far-end CE routers. If PE routers, you need MPLS LDP peering with P/PE routers.

[ahmad.alzaben]

it is CE Router

So you're saying all I have to configure on my routers' interfaces in the IP address (provided by my ISP), and the encapsulation type?

If that's all it is, I feel really silly.

I have thought about switching my routing protocol from RIPv2 to EIGRP or OSPF... would one of these be more 'suitable' for an MPLS mesh?  I'm concerned about the amt of traffic that will be flowing through these lines, I'd like to streamline it as much as possible.

And I'm not looking forward to re-writing all of my ACL's .

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if you can kindly try to send for me the best routing protocol and encapsulation type with the commands .

thanks for the info, it is big help!

note : i'm still in CCNA level so dont be angry from my quastions .

[yashfaqu]

Hi ahmad,

Yeh from the CE end all you need to configure is Ip address on the interface and IGP protocol, you can configure ospf on your 3900 router, with "ip ospf 1 area 0" command on your all interfaces.

rest of the configs will be done by your ISP.

Yasir

[leon.mflai]

Hi,

There are two kinds of popular MPLS services offered by ISP.

1. L3 MPLS

2. L2 MPLS / VPLS

For L3 MPLS services, CE routers has to interoperate routing protocol & IP address assignment with ISP. For example, some Verizon will offer BGP routing for L3 MPLS node while Global Crossing may offer OSPF protocol. All BGP AS number, OSPF area, CE/PE Interlink IP address must be provided by ISP. All routimg must be well discussed with ISP before provisioining. Some people think having communication with ISP for routing will take time and they will enable GRE tunnel (or VTI) to overlay their IGP over ISP routing.

For L2 MPLS, it is assumed that that path provided is L2 path so that you can run your own IGP regardless of the IP address setting of PE.

Thanks

Leon Lai