talltree
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Re-Route WAN traffic
Hi Experts,
We have an existing Voice and Data MPLS WAN with 3 locations. We also now have a new location which makes a total of 4 locations that new location is not on the MPLS WAN it has a new fiber WAN. has fiber and part of the project was to install fiber to all locations which is complete and the routers are in place, so all locations have fiber now.
How can I convert The MPLS network to fiber in phases, example have locations 1 and 2 fiber router so as 2 out of the 3 original locations are moved from the MPLS network to the fiber network.
I do not want to remove the MPLS network until all branches are on fiber, so not sure if I just have static routes in the gateway routers directing fast Ethernet subsets to send data to the fiber routers?
Thanks
We have an existing Voice and Data MPLS WAN with 3 locations. We also now have a new location which makes a total of 4 locations that new location is not on the MPLS WAN it has a new fiber WAN. has fiber and part of the project was to install fiber to all locations which is complete and the routers are in place, so all locations have fiber now.
How can I convert The MPLS network to fiber in phases, example have locations 1 and 2 fiber router so as 2 out of the 3 original locations are moved from the MPLS network to the fiber network.
I do not want to remove the MPLS network until all branches are on fiber, so not sure if I just have static routes in the gateway routers directing fast Ethernet subsets to send data to the fiber routers?
Thanks
Like cheever said, modify metrics on your routing protocol to prefer one path over other and be careful not to create routing loops.
ASKER
Hi,
We are using BGP and static, when i look at the routes I wanted to change to static I do see the routes have an B next to them(example below changed real data).
B 10.76.36.0/24 [20/0] via MPLS IP 7w0d
B 10.76.34.0/24 [20/0] via MPLS IP 7w0d
Thank You
We are using BGP and static, when i look at the routes I wanted to change to static I do see the routes have an B next to them(example below changed real data).
B 10.76.36.0/24 [20/0] via MPLS IP 7w0d
B 10.76.34.0/24 [20/0] via MPLS IP 7w0d
Thank You
Can you describe the network in a little more detail? how is the MPLS connected, are they different routers is there layer 3 somewhere else?
Thanks
Thanks
ASKER
We have MPLS voice and data circuits that route via layer 3 gateway routers at each location, these are separate from the new fiber routers at each location. Our newest location only has a fiber network/router and is not part of the MPLS network. We want all locations to move to the fiber network and want to test with one location that is currently on the MPLS network and at some point want to remove the MPLS network , but I wanted to have one location done at a time if possibly without creating creating an issue.
Thanks
Thanks
Where do these fiber circuits terminate? At the same routers/switches as MPLS? New equipment? Do you run any other protocols besides iBGP?
ASKER
Hi SIM50,
These are new circuits, they are separate routers, but do use the sames switches internally.
No other protocols, static routes.
Thanks
These are new circuits, they are separate routers, but do use the sames switches internally.
No other protocols, static routes.
Thanks
I would honestly consider implementing a routing protocol on the new routers, and planning the cut over with that path it offers the most oppertunities in the future and you have time to implement it now. That being said I offer the following
if you have control of the BGP router, you can use static routes on each sites router pointing towards the Fiber routers for the new site. As you want to migrate each site you will have to add statics for each site you cut over on all the other routers. It is not the most ideal solution but it can work.
You may face a hard cut in the future though if it is the gateway for the sites and you plan to dcom it alltogether.
if you have control of the BGP router, you can use static routes on each sites router pointing towards the Fiber routers for the new site. As you want to migrate each site you will have to add statics for each site you cut over on all the other routers. It is not the most ideal solution but it can work.
You may face a hard cut in the future though if it is the gateway for the sites and you plan to dcom it alltogether.
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I agree with @SIM50 as well, I am not a fan of static routes at all.
I would avoid iBGP as your internal routing protocol, it can get complicated for some implementions, and pick what ever flavor you like best. If you have Cisco I am a fan of EIGRP but OSFP would do just as well.
I provided a solution with statics only if you are totally not going to implement a new protocol.
I would avoid iBGP as your internal routing protocol, it can get complicated for some implementions, and pick what ever flavor you like best. If you have Cisco I am a fan of EIGRP but OSFP would do just as well.
I provided a solution with statics only if you are totally not going to implement a new protocol.
ASKER
Thank you guys and yes a resign is in order, but i may need to delay it until later this year.
I understand the static routes is not very efficient over all, short term it may work for now.
I understand entering static routes into the BGP gateway routers to pass traffic to the Fiber router to the new location but if i want to use the new fiber routers at each location to pass traffic between the original 2 locations that now have new fiber routers(active but not routing the traffic), but still use the BGP routers in a MPLS network
i was concerned about creating a loop as was mentioned? I know it may be sloppy now and will have to be redesigned at some point.
Thank you
I understand the static routes is not very efficient over all, short term it may work for now.
I understand entering static routes into the BGP gateway routers to pass traffic to the Fiber router to the new location but if i want to use the new fiber routers at each location to pass traffic between the original 2 locations that now have new fiber routers(active but not routing the traffic), but still use the BGP routers in a MPLS network
i was concerned about creating a loop as was mentioned? I know it may be sloppy now and will have to be redesigned at some point.
Thank you
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ASKER
Hi Ian,
Yes.
I realize it is not the best and will need to be redesigned, but the goal is to get the initial locations on to the fiber routers and still use the existing gateways. I was going to add static routes and was not positive if static routes take precedence over the MPLS learned routes.
Thanks
Yes.
I realize it is not the best and will need to be redesigned, but the goal is to get the initial locations on to the fiber routers and still use the existing gateways. I was going to add static routes and was not positive if static routes take precedence over the MPLS learned routes.
Thanks
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Hi there,
Tweaking AD values in static routes could help you achieve what you desire.
My recommendation would be to use dynamic routing once you have migrated from MPLS completely into fiber.
Tweaking AD values in static routes could help you achieve what you desire.
My recommendation would be to use dynamic routing once you have migrated from MPLS completely into fiber.
ASKER
Hi Cheever000,
Ok I did that and it worked as i can still ping the routers from each other and see the static entries in both router, but do not see the original one that was learned. Should I see both routes or only the new static route because it is the preferred? And if i wanted to back out and enter no ip route, would it revert back to the original learned BGP route or would I need to reenter it.
Thank you
Ok I did that and it worked as i can still ping the routers from each other and see the static entries in both router, but do not see the original one that was learned. Should I see both routes or only the new static route because it is the preferred? And if i wanted to back out and enter no ip route, would it revert back to the original learned BGP route or would I need to reenter it.
Thank you
You will only see the route that has the highest AD in the routing table. And you can always No out the new route.
ASKER
Thank You Cheever000.
ASKER
Excellent
If you are running something you can control the paths with metrics. Let me know the design and I give a more directed answer.
Thanks