From: CCIE KH49279 (ccie_lab@inetiq.com)
Date: Mon Oct 31 2005 - 13:16:31 GMT-3
JP,
Did this question come from a workbook? If you were to break out the range
in binary, you will see there are indeed three boundaries you are dealing
with. So while you could summarize, the entire range you would leave many
blackhole routes in that advertised summary. While in OSPF the summary will
have a pointer to null0, and will only pass traffic to more specific
networks (see disacard route under ospf), you are still telling other
routers/networks "I can reach a.b.c.d/z." If this is in your own network and
you are more likely to get away with it.
I have used summaries for a range of networks, and as more of the networks
come online in production, the fewer remaining blackholes exist.
HTH,
Wayne
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of JP
Sent: Monday, October 31, 2005 4:08 AM
To: ccielab@groupstudy.com
Subject: summary routes
Hi group
I am trying to summarize in to ospf the range 201.X.1.0 ( X=31-65) range
with one summarize command. will this be possible.
I am trying summary-address 201.32.0.0 255.240.0.0, but seems to recive more
routes than one..
What will the right summary command be
JP
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