[802.3af] RE: Why we need the "Power Force On" function as described by table 3 3-15 page 75 line 13.
Goeff,
 
Why 
this tool has to be inserted in the state flow.
There 
are many tools and yet they are not in the state flow, they are implementation 
specific.
 
In 
this case this is a bad tool that may be used to bypass the detection! why? 
because it is in the state flow and it can be used for that 
purpose.
If it 
is not in the state flow and is not permitted formally, one still can do it 
based on proprietary implementation, so if because of that some damage happen, 
the 
technology will not be blamed for it only the user. In our case, it can be 
argued that since it is permitted by the standard it is 
"OK".
 
Yair. 
  Yair-
The ability that we have put in is 
  a tool.
Whether or not you choose to make this tool accessible in your 
  product is a product (software driver) issue and perhaps an SNMP issue, not 
  ours.
Geoff
At 05:03 PM 2/23/2003 +0200, Yair Darshan 
  wrote:
  Guys,
Why we need this 
    ability?
I am worried about the situation that system manager/IT 
    manager will turn on this function (because he can..) and leave it on and 
    non compliant PDs will be connected to this port and will be 
    damaged.
Now when I will get complains from customers that "PDs" was 
    damaged how can I prove that it was done by using the above function and not 
    in normal mode?
Can you imagine the damage and potentially bad 
    reputation for this technology?
The access to turn on this 
    function  can be anywhere on the globe.
Remember that we had 
    worked hard to have reliable detection mechanism and now we have a back door 
    to bypass it at test mode.
(For the digital guys: it is like having 
    security system with a key to by pass it and the key is a public 
    domain...)
Please advise why we allow this 
    function?
Thanks
Yair.
 
 
    Darshan Yair Chief  Engineer PowerDsine Ltd.  -  
      Powering Converged Networks 1 Hanagar St., P.O. Box 7220 Neve Ne'eman 
      Industrial Zone Hod Hasharon 45421, Israel Tel:  +972-9-775-5100, 
      Cell: +972-54-893019
 Fax: +972-9-775-5111 E-mail: <mailto:yaird@xxxxxxxxxxxxxx>.  <http://www.powerdsine.com>