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Re: SAP values in Doc CD posted 06/30/2004
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In addition to the last email.... the 01 in 0x0001 represents the SSAP
field, and seeing this in binary, this means only the last bit can be
change...hence the first portion 0x0404 + last portion = 04 and 05

the first portion represents the DSAP  (00) , the DSAP does not need to
change, only the SSAP needs to change

The same applies to NetBIOS, only changeing for the last bit.... that is
where you get 0x0001
NetBios is 0xF0F0 0x0001 = F0 and F1


----- Original Message ----- 
From: "Yasser Aly" <yasser.aly@xxxxxxxxxxxxx>
To: "'Ty'" <tycampbell@xxxxxxxxxxx>; "'Kenneth Wygand'"
<KWygand@xxxxxxxxxxxxxxxx>; "'Jason Westlund'" <jason.westlund@xxxxxxxxx>;
<ccielab@xxxxxxxxxxxxxx>
Sent: Tuesday, June 29, 2004 7:21 PM
Subject: RE: SAP values in Doc CD


> Hi Ty,
>
>   I don't get why the mask would be 0x0001 instead of 0x0101 ?
> If we are interested in matching 0x04 & 0x05 then wouldn't we need to have
> the mask as 0x0101
> Same applies for NetBios: Need to match F0 & F1 then the mask would be
> 0x0101.
>
> If I am getting something wrong here then kindly correct me.
>
> Thanks for your feedback.
> Yasser
>
> -----Original Message-----
> From: Ty [mailto:tycampbell@xxxxxxxxxxx]
> Sent: Wednesday, June 30, 2004 3:17 AM
> To: Yasser Aly; 'Kenneth Wygand'; 'Jason Westlund'; ccielab@xxxxxxxxxxxxxx
> Subject: Re: SAP values in Doc CD
>
> The more specific values for SNA are 0x0404 0x0001   you have 0x0101 for
the
> second part, which you may want to watch for on the lab
>
> NetBIOS is 0xF0F0 0x0001    no 0xF0F0 0x0101
>
> From the DOC CD
>
> It is under bridging...then Source Route Bridging
>
> Just do a search for 0xF0F0 and it will come up
>
> DOC CD Portion
> The preceding statement requires three access lists to be configured:
>
>   a.. An access list that passes a frame if it is a NetBIOS frame (SAP =
> 0xF0F0)
>   b.. An access list that passes a frame if it is an SNA frame (SAP =
> 0x0404)
>   c.. An access list that passes a MAC address of 0110.2222.3333 The
> following configuration allows for all these conditions:
>
> ! Access list 201 passes NetBIOS frames (command or response) access-list
> 201 permit 0xF0F0 0x0001 !
> access-list 202 permit 0x0404 0x0001 ! Permits SNA frames (command or
> response)
> access-list 202 permit 0x0004 0x0001 ! Permits SNA Explorers with NULL
DSAP
>
> HTH!   :-)
> !
> ----- Original Message -----
> From: "Yasser Aly" <yasser.aly@xxxxxxxxxxxxx>
> To: "'Kenneth Wygand'" <KWygand@xxxxxxxxxxxxxxxx>; "'Jason Westlund'"
> <jason.westlund@xxxxxxxxx>; <ccielab@xxxxxxxxxxxxxx>
> Sent: Tuesday, June 29, 2004 6:41 PM
> Subject: RE: SAP values in Doc CD
>
>
> > Thanx all for your feedback.
> >
> > So to summarize the most common that needs to be known are as follows:
> >
> > SNA:
> > ====
> >
> > 0x0000 mask 0x0D0D [ This range includes 0x04, 05, 08, 08, & 0C ]
> >
> > To be more specific
> >
> > 0x0404 mask 0x0101 [ A key component in DLSW topologies ]
> >
> > NetBios:
> > ========
> >
> > 0xF0F0 mask 0x0101  [ Matches F0 & F1 ]
> >
> > IPX:
> > ====
> >
> > 0xE0E0 mask 0x0101
> >
> >
> > To allow all SAPs:
> > ==================
> >  0x0000 mask 0xFFFF
> >
> > Will that be all or there is others to be added to this small list ?
> >
> > Yasser
> >
> > -----Original Message-----
> > From: Kenneth Wygand [mailto:KWygand@xxxxxxxxxxxxxxxx]
> > Sent: Wednesday, June 30, 2004 2:30 AM
> > To: Jason Westlund; Yasser Aly; ccielab@xxxxxxxxxxxxxx
> > Subject: RE: SAP values in Doc CD
> >
> > Jason,
> >
> > Are you sure ipx is e0e0 - 0000 and not e0e0 - 0101.
> >
> > I always though the reply traffic came back with the last bit flipped,
so
> I
> > would think IPX would be treated the same as NetBIOS.
> >
> > Thoughts?
> >
> > Kenneth E. Wygand
> > Systems Engineer, Project Services
> > CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
> > Network+, A+
> > Custom Computer Specialists, Inc.
> > "The only unattainable goal is the one not attempted."
> > -Anonymous
> >
> > -----Original Message-----
> > From: Jason Westlund [mailto:jason.westlund@xxxxxxxxx]
> > Sent: Tuesday, June 29, 2004 7:20 PM
> > To: Kenneth Wygand; Yasser Aly; ccielab@xxxxxxxxxxxxxx
> > Subject: RE: SAP values in Doc CD
> >
> > You should also know IPX e0e0 - 0000 and ANY 0000 - ffff.
> >
> > -Jason
> > CCIE #13261
> >
> > -----Original Message-----
> > From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
> > Kenneth Wygand
> > Sent: Tuesday, June 29, 2004 4:09 PM
> > To: Yasser Aly; ccielab@xxxxxxxxxxxxxx
> > Subject: RE: SAP values in Doc CD
> >
> > SAP addresses are as follows:
> >
> > SNA:
> > Address: 0x0000  --  Mask: 0x0D0D
> >
> > NetBIOS:
> > Address: 0xF0F0  --  Mask: 0x0101
> >
> > I don't think there are any other important ones that you need to know.
> > Does anyone disagree?
> >
> > Thanks!
> > Ken
> >
> > -----Original Message----- 
> > From: nobody@xxxxxxxxxxxxxx on behalf of Yasser Aly
> > Sent: Tue 6/29/2004 6:37 PM
> > To: ccielab@xxxxxxxxxxxxxx
> > Cc:
> > Subject: SAP values in Doc CD
> >
> >
> >
> > Hello,
> >
> >   I wonder where to find the SAP values in the DOC CD, also where to
> > find
> > examples regarding lsap access-lists in the CD.
> >
> > Thanks,
> > Yasser
> >
> >
> > _______________________________________________________________________
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