Help for a network design

[antonio.guirado]

Hi,

We need some help about network design. We have 3 mainly services:

1. VPN L2 point-to-point links
2. Customer type A than must use Internet link type A
3. Customer type B than must use Internet link type B

So far, we have use default routing table in router to implement service 2. A vrfB to implement service 3. For service 1, we use QinQ with brigde-domains or p2p connections. Users for service 2 and 3 must not be connected between them.

Now, our network topology is going to change and we can have a redundant ring topology with 9 routers (ASR903 and ASR9006). Each node can have customers than ask for the 3 services.

We don’t like very much use MSTP as protocol responsible of implementing network redundancy. So we have been studying MPLS: LDP, EoMPLS (instead of QinQ)  and OSPF as internal routing protocol (instead MST).

We think that a possible solution is:

• Use default routing table in all router to implement active MPLS and LDP, with a OSPF process with id 1 for example.
• Use vrfA to implement service 2, with a OSPF process with id 2.
• Use vrfB to implement service 2, with a OSPF process with id 2.

We suppose than perhaps we can mix in default routing table both service 1 and 2 but we don’t like it very much.

Any ideas for a goog network design?.

Thank you very much in advanced.

Regards

[Renan Abreu · Accepted solution]

I am not sure I understand all of your requirements, but it seems that implementing MPLS on your network is the way to go. You would use OSPF/ISIS on your global table, your customers could use L3VPN for their routing.