This is to (hopefully) confirm that my understanding of the examples in the
BSCN book and the IRA 2nd. ed. book are correct.
If the formel looks like this:
ip prefix-list elvis permit a.b.c.d/n
It will be compiled like this:
1) if neither "ge" nor "le" are added, only the excact prefix (n) is
allowed.
2) if only "ge x" is added, n is ignored and an invinsible le of 32 are
added so
prefix x thru 32 are permitted.
3) if only "le y" is added, prefix n thru y are permitted.
4) if both "ge x" and "le y" are added, n is ignored and prefix x thru
y are permitted.
This is to all you BGP experts out there - please comment with true or false
on the 4 statements above, and add any comments or corrections if necessary.
One last question, can the ge value be lower than the /n value?
Example : ip prefix-list elvira permit 172.16.0.0/16 ge 8
and would that allow only the prefix 172.16.0.0/8 ?
I thank you in advance,
Ole
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ole Drews Jensen
Systems Network Manager
CCNA, MCSE, MCP+I
RWR Enterprises, Inc.
[EMAIL PROTECTED]
http://www.RouterChief.com
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NEED A JOB ???
http://www.oledrews.com/job
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