On Fri, Jan 22, 1999 at 08:46:36AM +1300, Warwick GLENDENNING wrote:
Waikato has no objection to carriers or ISP's running BGP
meshes at the NZIX if it provides a more robust service. However
from Waikato's perspective (and possibly for other smaller NZIX users) we
would prefer that routers connected to the NZIX also ran OSPF as we use this
process to collect NZ
routes and differentiate between domestic and international traffic
for our campus IP traffic metering.It is possible that other NZIX users do
the same. OSPF is also less complex to manage for smaller users with fewer
highly skilled network staff.
If we can get agreement from the other main providers (by which I mean
those who do not transit another NZ provider for global access) to run
BGP, then we will be keen to stop running OSPF at NZIX. Other exchange
participants who are unwilling or unable to run BGP will still be able to
reach our networks via their transit providers' BGP peering with CLEAR.
Any routes you receive by BGP from us can be interpreted as "domestic"
routes - similarly for Telstra NZ and IBM, I would suppose.
For our customers we apply community tags to routes so that customers can
differentiate between routes learnt from off-shore BGP peers, and those
learnt from within NZ - I would imagine that Telecom can do something
similar for you.
This being the case, I don't really see how extracting routes from OSPF
is any easier than BGP - if anything BGP is easier, since you have a much
clearer picture (from the AS-path) of where the routes originated, and hence
more automated checks are possible to ensure that the "domestic table" is
Naturally, this is not a change that you will want to make overnight, and
your requirements should be included in the timeline for a BGP transition
if at all possible.
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