From: Xuan.Sun@xxxxxxxxxxx
Date: Wed Aug 15 2001 - 20:08:16 GMT-3
I have set up the network based on Fig 3-11. Please refer to the Routing
TCP/IP Volume II, Page 189. I can not draw it here.
The idea is to use NO-EXPORT to control the internal network address to
leak to AS 300. So the router under AS 300 only see the aggregate address,
not the specific-route. But this solution is not worked in one condition.
If the link between Diamond and Burke broken and the link between Stowe and
Sugarbush broken, you will see all the specific routes in Burke router. The
reason is the community attribute of NO-EXPORT is lost when it distributes
in the IBGP peer. Under Example 3-55 in Page. 293, it has showed two BGP
entries for 192.168.199.0. One is from EBGP peer, obviously has NO-EXPORT
attribute. One is from IBGP peer, no NO-EXPORT.
Am I rigtht ?
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