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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

1995.0. "IP filtering under Hubwatch for windows V3.1" by PRSSOS::PEYRACHE (Jean-Yves Peyrache Country Support Group France) Fri Feb 10 1995 08:57


  Hello,

  Why you can't filter an IP address using Hubwatch for windows V3.1 on         
  Decswitch family?

  it's a bug or a desirate non-feature ??
  nothing on help or in read-me.txt for this problem...


  thanks for any comments
T.RTitleUserPersonal
Name
DateLines
1995.1KAOFS::S_HYNDMANAcronym Decoder Ring ArchitectFri Feb 10 1995 12:457
    
    	I would suspect because it is not a ethernet layer address.  This is a
    bridge after all and won't look at the network layer.  Perhaps when the 
    brouting code ships.
    
    
    Scott
1995.2already implementedPRSSOS::PEYRACHEJean-Yves Peyrache Country Support Group FranceFri Feb 10 1995 13:308
>> 	I would suspect because it is not a ethernet layer address.  This is a
>>   bridge after all and won't look at the network layer.  Perhaps when the 
>>    brouting code ships.

   not really, it's work on Open-VMS plaform and OSF-1 as well
  
   jean-yves
1995.3Huh?NETCAD::GALLAGHERFri Feb 10 1995 14:239
Yes, really.

If I understand your question to be, "Why can't the DECswitch filter
on IP address", then .1 is right.  Bridges offer performance advantages
over routers because they are (mostly) layer 2 devices.

Could you elaborate on your question?

						-Shawn
1995.4The real answer is...SLINK::HOODThis is my new personal name for NotesFri Feb 10 1995 14:258
The real answer is because at least one of the primary supported IP stacks
on the PC doesn't allow easy accesses to the ARP cache.  The HUBwatch
repeater engineer, in one of those I-can-spend-several-more-weeks-making-
this-work vs We-make-money-only-if-we-ship-the-product tradeoffs did not
include the IP-to-MAC translation for the Windows version for V3.1

Tom Hood
HUB<ka-choo>watch
1995.5Oh.NETCAD::GALLAGHERFri Feb 10 1995 14:283
Okay, I obviously didn't understand the question.  Please disregard .3.

						-Shawn
1995.6SLINK::HOODThis is my new personal name for NotesFri Feb 10 1995 14:347
Shawn,

It's too late.  Valuable engineering, sales, support, and marketing resources
were already wasted reading .3.  Time that could have been spent bringing our
customers satisfaction was spent reading your question.

Tom
1995.7merci les gourousPRSSOS::PEYRACHEJean-Yves Peyrache Country Support Group FranceFri Feb 10 1995 15:326
  Thanks all, (including Shawn...)

  any plan to add it in V4 ?

  jean-yves
1995.8Gourous?ROGER::GAUDETBecause the Earth is 2/3 waterFri Feb 10 1995 16:004
Now come on Jean-Yves, is that really the way you spell "guru" in French?  The
word just never came up during my high school French vocabulary studies.  :-)

...Roger... (that's pronounced Roh-jeh')
1995.9PRSSOS::PEYRACHEJean-Yves Peyrache Country Support Group FranceFri Feb 10 1995 17:098
oui
yes
da
ya
si


 Jean-Yves
1995.10KAOFS::S_HYNDMANAcronym Decoder Ring ArchitectFri Feb 10 1995 20:028
    
    
    	My head is full of DECnis and MCC crap today, did I miss something? 
    Can our DECbridge 900MX filter based on IP addresses?  That would
    certainly be a unique function for a bridge.
    
    
    Scott  
1995.11NETCAD::GALLAGHERFri Feb 10 1995 20:489
My sincere sympathy.  Anything to do with MCC is not a good time.

No, the DECbridge900MX can't filter based on IP addresses.

Jean-Yves and Tom are referring to a HUBwatch feature that allow(ed)
users to translate a MAC address into an IP address.  I'm not too
familiar with the algorithm, but I know it used the host's ARP-cache
to perform the translation.              
						-Shawn
1995.12KAOFS::S_HYNDMANAcronym Decoder Ring ArchitectMon Feb 13 1995 12:027
    
    
    Thought I was loosing it.
    
    Thanks,
    
    Scott