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SP0016 - MPLS VPN Multi-VRF CE
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Service Provider
It is possible for a single CE device to serve multiple MPLS clients. This requires traffic segregation to be extended to the CE device. The video looks at a scenario of multi-VRF CE device in Cisco MPLS VPN. We will configure two PE-CE routing protocols; BGP and OSPF, in VRF-lite setup and enable support for MPLS label exchange all the way to the CE router. Special configuration will be presented now that our CE router contains multiple VRF and participates in MPLS forwarding.
Topic:
- Multi-VRF CE
- VRF-Lite
- PE-CE BGP with send label
- PE-CE OSPF
About Author
Metha Chiewanichakorn, CCIE#23585 (Ent. Infra, Sec, SP), is a Cisco networking enthusiast with years of experience in the industry. He is currently working as a consulting engineer for a Cisco partner. As a founder of and an instructor at labminutes.com, Metha enjoys learning and challenges himself with new technologies.
4 comments
Hi Metha
What is the benefit of using labels between the R2 and R7 devices? You still have reach ability to R8 from R6 LO10-12 without them.
You are correct. From the
You are correct. From the connectivity perspective, label exchange between CE PE is not really required. However, there might be some benefit from QoS perspective where you want EXP value to be maintained all the way to CE and vice versa.
Let's say the provider did
Let's say the provider did not support dot1q on the transit link and needed to support multiple VRFs on the CE, would you recommend making the PE (R2) a Route Reflector and the CE R7 a Route Reflector Client? Here R7 would have to use BGP AS 100 and exchange labels with R2 via BGP, but we could then use VRF C1 and C2 or any VRFs required to deliver services to the downstream link to R6.
Technically, Yes, assuming
Technically, Yes, assuming you have access to all routers such as in a lab setup. However, a provider does not usually you to peer with them using MPBGP.