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Re: (ASCEND) Using wddialout to troubleshoot excessive dialing



> I turned on wddialout. Can anyone give me a hint on reading this?

The 60 octets are the contents of the packet.  You look through the packet
using the different standards for packets.  Things like RFC 1700 are useful
for this.

>  [0000]: 09 00 07 FF FF FF 00 05 02 08 09 4E 00 24 AA AA
>  [0010]: 03 00 00 00 80 F3 00 01 80 9B 06 04 00 01 00 05
>  [0020]: 02 08 09 4E 00 FF 00 8A 00 00 00 00 00 00 00 FF
>  [0030]: 00 17 00 00 00 00 00 00 00 00 00 00

For instance, this packet uses an IEEE 802.3 header.

09 00 07 FF FF FF - dst addr - AppleTalk broadcast address
00 05 02 08 09 4E - src addr - 000502 - Apple Computer vendor code
00 24             - length
AA                - dsap
AA                - ssap
03                - cntl
00 00 00          - org
80 F3             - type AppleTalk AARP 

It is an Appletalk packet.  If you don't want it to bring up the link
then add a filter rule to the call filter for this connection.

Pipelines come with a number of example packet filters already configured
but not installed on any interfaces.  One of these is an "AppleTalk Call"
filter.  [This filter is also explained in the User's Guide]

Basically you need a Generic rule that will try to make sure the packet is
an IEEE 802.3 packet and will match the Ethernet type "80f3" field.  The
following is an Ascend example.

  20-403 AppleTalk Call         
   Generic...                   
    Forward=No                  
    Offset=14                   
    Length=8                    
    Mask=ffffff000000ffff       
    Value=aaaa0300000080f3      
    Compare=Equals              
    More=No                     

This has the disadvantage that it could [theoretically] match other packets
but has the advantage that it is a single rule.  To do it "better" you would
need two rules that were chained together using the "More" parameter.

  20-403 AppleTalk Call         
   Generic...                   
    Forward=No                  
    Offset=0                   
    Length=6                    
    Mask=ffffffffffff
    Value=090007ffffff
    Compare=Equals
    More=Yes                     

  20-403 AppleTalk Call         
   Generic...                   
    Forward=No                  
    Offset=20                   
    Length=2                    
    Mask=ffff
    Value=80f3
    Compare=Equals
    More=No                     
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