From: ccie2be (ccie2be@nyc.rr.com)
Date: Mon Apr 25 2005 - 11:55:16 GMT-3
Hi guys,
I've been going over the Cisco doc's on this
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/ipv6
_c/sa_natpt.htm
and it seems to me there are a lot of conceptual blanks that need to be
filled in.
I'm hoping with the help of GS to be able to fill-in those blanks.
If you look at page 338 from the above link, you'll see that a portion of
the ipv6 address assigned to the interface matches the ipv6 nat prefix
defined in step 3.
My guess is that is required but the doc doesn't say so. Is that required?
Also, notice that only the first 8 hex digits of the ipv6 address match the
ipv6 nat prefix.
Why only the first 8 hex digits?
Also, I assume that some IGP must be used to advertise the ipv6 nat prefix
although none of the examples show this. My reasoning is this: If the
other ipv6 routers don't know where the nat-pt router is, they can't send
packets to it. I also assume that the reason the interface has an ipv6
address that partially matches the ipv6 nat prefix is so that when an IGP is
configured on that interface, then the other ipv6 routers will know how to
reach the nat-pt router.
Is that assumption correct?
I'm doing my best to try to fill-in the blanks but I'm completely guessing
about all these things.
Can someone explain what's really going on with this and if I'm on the right
track?
TIA, Tim
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