migrating service provider

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Nov 2nd, 2008
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Hey all,

We are migrating from one service provider to another one both having MPLS connection to our DC.

Usually when we migrate a site, once the new service provider advertises the LAN subnet the old service provider's links stops working and new provider's link takes over..

This time, the old service provider is advertising a subnet 10.1.x.x/16 network to the DC.But we are planning to migrate only 10.1.2.x/24 subnet of the major subnet to new service provider. Rest of the sites in 10.1.x.x/16 will use the old provider itself.

I feel like this won't cause any issues, but can any of you guys confirm if this is going to be ok and none of the other sites won't go down.


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Jerry Ye Sun, 11/02/2008 - 18:41
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As long as your new SP is advertising a more specific route (/24 vs /16 on your old SP), it should be fine.

A more specific route will be installed in the routing table.



guruprasadr Sun, 11/02/2008 - 19:59
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HI, [Pls RATE all Informative POST]

Yes, it again depends upon the longest match in the Network Cloud.

Best Regards,

Guru Prasad R


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