From: Scott Morris (swm@emanon.com)
Date: Thu Jul 07 2005 - 23:38:28 GMT-3
It's a stretch...
First, per the DocCD:
"Usage Guidelines
Type-code access lists can have negatively affect system performance;
therefore, keep the lists as short as possible and use wildcard bit masks
whenever possible.
Access lists are evaluated according to the following algorithm:
.If the packet is Ethernet Type II or SNAP, the type-code field is used.
.If the packet is another type, then the LSAP is used."
So with a valuer of 80D5, I can tell you right away that's not a SAP code.
It's an ethertype code. I haven't got a clue of the context of the lab, but
ethertype code 0x80D5 is used to indicate IBM/SNA traffic (NOTE: NOT
specifically DLSW, but native SNA) within a SNAP type ethernet header. I
haven't found a great reference of ethertypes on the DocCD other than random
ones in different places.
If you want more esoteric things to look up like that, check out:
http://www.netwho.com/frame/ethertype.htm
HTH,
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Amit
Jain
Sent: Thursday, July 07, 2005 1:39 PM
To: Schulz, Dave; Group Study
Subject: Re: protocol type-code information on DocCD
Hey Dave
The list no doubt looks useful, but I am still nowhere. In an IE example we
needed to permit SNA traffic. Answer says:
access-list 200 permit 0x0000 0x0D0D
but the list you mentioned says SNA type code as 80D5. What is the part of
puzzle I am missing?
Also I could not look for Netbios type code in list.
Amit
----- Original Message -----
From: "Schulz, Dave" <DSchulz@dpsciences.com>
To: "Amit Jain" <netsteps@rediffmail.com>; "Group Study"
<ccielab@groupstudy.com>
Sent: Thursday, July 07, 2005 8:29 PM
Subject: RE: protocol type-code information on DocCD
Amit -
The type codes can be found under volume 1 of 2 (Cisco IOS Bridging and
IBM Networking Command Reference, Volume 1 of 2: Bridging, Release 12.3)
of the configuration document CD.....
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/ibm_
r1/index.htm
Does this help?
Dave Schulz
Email: dschulz@dpsciences.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Amit Jain
Sent: Thursday, July 07, 2005 7:42 AM
To: Group Study
Subject: protocol type-code information on DocCD
Hi
In the DLSW examples where we have to permit/deny traffic based on
protocol
type-code, I am have difficulty figuring out the correct type-code. Can
somebody help me locate the same on DocCd ?
Amit
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