From: Brian McGahan (brian@xxxxxxxxxxxxxxx)
Date: Mon Feb 11 2002 - 04:33:42 GMT-3
The mistake is in Solie's book. The SNA SAPs you are matching on are 0x04,
0x08, & 0x0C for request, and 0x05, 0x09, & 0x0D for response. When you
work this out bitwise you get:
0x04 = 00000100
0x05 = 00000101
0x08 = 00001000
0x09 = 00001001
0x0C = 00001100
0x0D = 00001101
-----------------------
wildcard = 00001101 which == 0x0D
0x0D is the wildcard mask, not the bits you are checking against. 0x0000
0x0D0D matches all 6 of these SAP values. 0x0D0D 0x0000 matches only the
exact SAP 0x0D0D.
Brian McGahan
CCIE #8593
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
----- Original Message -----
From: "Kyaw Khine" <kkhine@register.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, February 10, 2002 12:55 PM
Subject: SNA SAP Filter
> Hi Group,
>
> In Karl Solie's book page 937-938, SNA SAP filter looks like
> access-list 200 permit 0x0d0d 0x0000
>
> But on CCO (http://www.cisco.com/warp/public/698/acl200.html), it looks
like
> access-list 200 permit 0x0000 0x0d0d
>
> NetBIOS and IPX filter list examples are identical.
>
> Is it a mistake in the book or on CCO?
> Any suggestion?
>
> Thanks
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