Conference netcad::hub_mgnt

(1) Double-click on the DECswitch 900EF bezel.  This brings up the switch
    summary screen.
(2) In the summary screen press the address filters button.  This brings up
    the address filters screen.  The HELP button at the bottom of the summary
    screen also explains how to get the address filters window.
(3) In the address filters screen, press the "+" button.  This allows you
    to add an address filter.  The HELP button at the bottom of the address
    filters window also explains how to add filters.
(4) In the address pop-up, select MAC or IP or DECnet (some choices may not
    be available depending on your platform) then enter either the MAC /
    IP / DECnet name or address.  Internally, HUBwatch will translate whatever
    you enter into a MAC address.  Now, select (using the arrow buttons)
    whether you want the address to appear on a port or not.  A green arrow
    means not filtered.  A red arrow with a bar means filtered.  If the
    address is multicast, you can also select rate limiting by pressing the
    button in the upper right corner (stopwatch/arrow icon).  The HELP button
    at the bottom of the address pop-up explains what each of these fields
    does.
(5) Finally, hit <OK> at the bottom of the address pop-up.

You are now filtering that address from the selected ports.  The HELP function
explains how each step works in detail.

Tom Hood
HUBwatch

    Thanks Tom for the info.,
    
    But (forgive me if I'm being thick) wouldn't this still allow all
    addresses to be forwarded across the bridge - as we have not specified
    that all other address should not be allowed across.
    
    Rich

    >But (forgive me if I'm being thick) wouldn't this still allow all
    >addresses to be forwarded across the bridge - as we have not specified
    >that all other address should not be allowed across.
        
    Well, if that's what you were are trying to do, I think you can set
    the bridge to "manual mode", or individual ports to manual mode.
    This clears the forwarding table of the specific ports you put into
    manual mode. Then you can do as Tom suggested, I believe.
    
    Bob

(1) Double-click on the DECswitch 900EF bezel.  This brings up the switch
    summary screen.
(2) In the summary screen press the address filters button.  This brings up
    the address filters screen.  The HELP button at the bottom of the summary
    screen also explains how to get the address filters window.
(3) In the address filters screen, look at the section labelled "Unspecified
    Filter Defaults" and "Manual Mode" (same box, two labels)
(4) A green arrow per port means all unspecified addresses can be forwarded.  
    A red arrow means all unspecified addresses will not pass onto or from
    port.
(5) By default, all "Unspecified Filter Defaults" are set to green (can be
    forwarded on this port).  If you make a port's arrow red, only the 
    addresses you specify in the middle of the window can pass.
(6) Same rules apply about pressing the <HELP> button.  (see below)
(7) Don't forget to press the <HELP> button.  (see below)
(8) The <HELP> button may provide more information.   (see below)

----------------------------------------------------

Here's what HELP says from the Address Filters window:
(Motif Bookreader version;  Windows version has some minor differences)


  Address Filtering Window

  Open the window to display the following types of
  information:


  Information                           Description

  Identification               Descriptive information about the module

  Filtering Information        Address filtering information

  Filters list box             The filters defined for specific addresses

  Default Address Filter       The default filter for all addresses that do 
                                    not have specified filters

----------------------------------------------------
(It also goes on to describe the other buttons in the window)
Clicking on "Default Address Filter" produces the following HELP:

  Manual Mode

  The filter port mask for all unspecified addresses allows you
  to create a filter that applies to all addresses for which you
  have not created a specific filter on a port. For example, by
  stipulating that port 2 will filter messages with all unspeci-
  fied addresses, you can ensure that all messages except those
  with the address you specify for port 2 in the Filter table will
  be filtered on port 2.

  This feature is also called manual mode because it allows
  you to turn off learning on a module port. Using this feature,
  you can manually configure the module as a secure gateway,
  to restrict the traffic flow to trusted stations.

  For more information on creating a filter for all unspecified
  addresses, double click here.
----------------------------------------------------
Clicking on "click here" produces the following HELP:

  Creating a Default Filter for All Unspecified Addresses

  The Bridge Address Filtering window includes a filter port
  mask for all unspecified addresses. This mask allows you to
  create a filter that will apply to all addresses for which you
  have not created a specific filter. For example, by stipulating
  that port 2 will filter messages with all unspecified addresses,
  you can ensure that all messages except those with the ad-
  dress you specify for port 2 in the Filter list box will be filtered
  on port 2.

  This feature is also called manual mode because it allows
  you to turn off learning on a module port. Using this feature,
  you can manually configure the module as a secure gateway,
  to restrict the traffic flow to trusted stations.

  Initially, the filter port mask for all unspecified addresses
  shows no ports filtered.

  To specify a filter for all unspecified addresses:

   1. From the Hub Front Panel window, double click on the module.

   2. Click on the Address Filtering window push button in the
      More Information box.

      <picture of Adrs Filter          Address Filtering window push button
       button icon here>

      The Bridge Address Filtering window appears

   3. Click on the arrows in the All Unspecified Addresses fil-
      ter mask until the arrows indicate the default filter mask
      you want. A green arrow under a port number indicates
      that messages are not filtered on the port. A red arrow
      tipped with a black horizontal bar indicates that messages
      are filtered on the port.

   4. Click on Apply to apply the change or OK to apply the
      change and dismiss the window.


Tom Hood
HUBwatch

    Thanks everybody for your help,
    
    I'll try and remember that help button next time!
    
    Rich