From: Rick Crowson (rick_crowson@xxxxxxxxxxx)
Date: Wed Nov 01 2000 - 10:33:57 GMT-3
Phillip,
SAP type 0x00 and 0x01 don't appear to have a meaning. From the second
paragraph of your link, "SAPs must be multiples of 0x04 beginning with
0x04." Beginning at 0x04 does not include 00 or 01.
Rick
>From: Philip Lai <philip@home.com.hk>
>Reply-To: Philip Lai <philip@home.com.hk>
>To: ccielab@groupstudy.com
>Subject: Sap type from Cisco technical tips.
>Date: Sun, 29 Oct 2000 13:08:31 +0800
>
>Hi,
>When I reading SAP type in
>http://www.cisco.com/warp/customer/698/acl200.html , it list all the sap
>type there.
>I am wondering what the the meaning for the sap type for 00 and 01. Are
>they
>the explorer frame or the command and respond ? Will the explorer frame
>have
>a fixed value of sap type ?
>
>________
>Another point to consider when designing the ACL is that SAP values change
>depending on if they are commands or responses. The SSAP includes the
>command/response (C/R) bit to differentiate between them. The C/R is set to
>0 for commands and to 1 for responses. Therefore, the ACL must allow or
>block commands as well as responses. For example, sap 0x05 (used for
>responses) is just SAP 0x04 with the C/R set to 1. The same applies to sap
>0x09 (sap 0x08 with C/R set to 1), 0x0D, and 0x01.
>
>Thanks
>Philip Lai
>NCR HK Email: philip.lai@ncr.com
>Phone: (852) 2859-6076 Fax: (852) 2294-3055
>
>
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