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Re: [RRG] LISP question




On Dec 6, 2007, at 3:22 PM, Robert Raszuk wrote:

In the interest of saving time tomorrow I would like to ask for some clarification reg how large corporate enterprise sites (those who run full table of BGP today) would auto discover ITRs ?

Their network maybe multi-as as well as multi-area. The answer from the audience of LISP tutorial was that EIDs-subnets would be carried in those networks in BGP to attract traffic to ITRs. But on the other hand we know that there can be much more EID subnets (I think I heard 3 fold estimate) then there is today IP prefixes in full BGP table ... not too mention 10^10 long term number.


Most likely, the ITRs would be co-located with the exact same routers that originated default into the IGP.


What would be the benefit and driver for such large corporate sites to install ITRs ?


Ability to advertise locators on a per-host basis and perform inbound TE. Ability to effectively get current PI capabilities without actually justifying a PI prefix.

Tony

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