From: Marek Janik (mjanik@xxxxxxxxxx)
Date: Sun Aug 19 2001 - 13:19:53 GMT-3
Hello tom,
Sunday, August 19, 2001, 6:02:02 PM, you wrote:
tc> Daniel,
tc> The original question was "How to configure MAC filter to allow address
tc> starting with 4000.2200.xxxx." Yves' solution was: 4000.2200.0000 mask
tc> ffff.ffff.0000. What you said is also correct that "f" are care bits and
tc> "0" are don't care. So correct me if I'm wrong. The mask of ffff.ffff.000
0
tc> implies 4000.2200 must match and the rest is don't care. This yields a
tc> result of permitted mac address range 4000.2200.0000 through 4000.2200.ffff
.
tc> Or 4000.2200.xxxx.
Yes .. you are right ... but only when you use dlsw icanreach mac-address
http://www.cisco.com/warp/customer/697/dlswfilter.shtml#macfilter
When you use access-list MAC type (700-799) "f" means don't care "0"
means care ...
You can check in your CD
http://127.0.0.1:8080/cc/td/doc/product/software/ios120/12cgcr/ibm_r/brprt1/brt
b.htm#xtocid290632
-- Marek Janik CCDP/CCNP+Security Network Integration Department MCX sp. z o.o., Towarowa 7A, PL 00-839 Warszawa, POLAND +48225484719, fax +48225484682, http://www.mcx.com.pl **Please read:http://www.groupstudy.com/list/posting.html
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