[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference npss::gigaswitch

Title:GIGAswitch
Notice:GIGAswitch/FDDI Jan 97 BL3.1 914.0 documentation 412.1ion 412.1
Moderator:NPSS::MDLYONS
Created:Wed Jul 29 1992
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:995
Total number of notes:4519

961.0. "Confused on filtering...." by CSC32::OLMAIN::Goodwin (Brad Goodwin - NSIS) Fri Mar 28 1997 11:37

Filtering has got me a bit confused. I'm a bit confused on how to set up a 
port and filter matrix to filter a multicast from going out a single port and 
the multicast can from any input port, including the port that I don't want 
the multicast to go out. 

In other words, customer client system doesn't want to receive the multicast, 
from other ports, and wants to filter it, but the client must be able to send 
the multicast. 

Can anyone give me an example filter to use. I will be using MCM 6.0a to set 
up the filter.

Thanks,
Brad

T.RTitleUserPersonal
Name
DateLines
961.1NPSS::MDLYONSMichael D. Lyons DTN 226-6943Fri Mar 28 1997 12:529
        Giving an example is difficult, since you specified using the GUI
    interface...  It's the same as all the examples in the book.  When
    specifying the filter matrix, you specify the output ports for which
    the associated filters apply.  If you don't want a specific DA going to
    a specific port, then create a filter matrix leaving that port out, and
    associate a DA filter with that filter matrix.
    
    
    MDL
961.2NPSS::MDLYONSMichael D. Lyons DTN 226-6943Fri Mar 28 1997 12:596
    P.S. Although your specific example is unclear to me (it's unclear as
    to which ports are to be allowed to send the multicasts), it's trivial
    to do this with MCM.  MCM displays a filter matrix of all ones by
    default, with input ports on one axis and output ports on the other. 
    You just blank out the output ports for whichever input ports you care
    about.
961.3CSC32::cxoras44.cxo.dec.com::GoodwinBrad Goodwin - NSISTue Apr 01 1997 13:0420
MDL,

Yesterday, I tried setting up filtering using MCM 6.0a and it failed. As a 
matter of fact, MCM seemed to just hang with the hour glass and never come 
back. I had to stop the MCM task and restart it. What I was doing was trying 
to do is filter all broadcast messages from going out port 3.2. But I still 
want broadcast messages to input the GS from 3.2. Now that I think about it, I 
might have set the filter up wrong (Yesterday was a very bad day). Anyway, 
what I had done was click on the 3.2 input port and go across horizontaly for 
all ports except for 3.2 in the port matrix. I set up the mac address as 
ff-ff-ff-ff-ff-ff and always filter. I think I should have set up output 3.2 
and gone down vertically. 

Also, I was trying to figure out how to turn off dynamic learning on a port 
and set up static addresses on that port. Any quick hints on that? I wasn't 
successful.

Thanks,
Brad

961.4NPSS::MDLYONSMichael D. Lyons DTN 226-6943Tue Apr 01 1997 14:1421
        GIGAswitch/FDDI filter matrices are defined in terms of outbound
    ports.  This is not an option.  This is the way they are defined.  For
    each input port, you define the set of output ports to which that input
    port can send frames.
    
        I am currently at home, without access to the MCM GUI to see what
    you are describing.
    
        Note that it is entirely possible to set up filters which prevent
    the GIGAswitch/FDDI system from communicating with the management
    station.  When setting up filters, take care not to cut off the
    management station, unless that is your intention.
    
        "Manual mode" is documented in the GIGAswitch/FDDI System Manager's
    Guide, page 4-16.  The MIB object(s) are ebrNportManualFilter or
    ebrNportFppnManualFilter.  I don't know anyone who has used them.
    
        In case this isn't obvious, MCM implements a fraction of the 
    GIGAswitch/FDDI System features. 
    
    MDL
961.5CSC32::bngpc.cxo.dec.com::goodwinBrad Goodwn - NSISTue Apr 01 1997 18:2916
am I having fun yet....

Michael,

OK, I've read the "Manual Mode" section in the GS manual. Not to informative. 
I've also looked at the MIB definitions from the SNMP guide and it doesn't make 
much since to me, I'm not a real good snmp person. Anyway. Can you give me an 
example command(s), to be used on the GS console, to lock down an address on 
the GS port. Ie, I want to make it so only a devices with mac address 
08-00-2b-12-34-56 and 08-00-2b-65-43-21 can only be used on port 3.2 of the GS.
My customer is a large DOE site, and they want to implement mac level security on 
a per port basic, so no other device can connect to that port and operate.

Thanks for any help,
Brad

961.6NPSS::MDLYONSMichael D. Lyons DTN 226-6943Tue Apr 01 1997 21:0050
    ....in this example, I set 08-00-2b-12-34-56 to be locked down on port 6,
    which is fppn 3.2 - I forgot you wanted to specify fppns - it's
    essentially the same, just a different MIB object, and a slightly
    different syntax.
    
        I didn't bother with the second MAC address, since it is the same
    sequence of events.
    
        If you are confused by the index I use, consult note 270, which
    explains how to specify MAC address indices in OBM.  It is easier to
    do with a management station.
    
    MDL
 
 Get/Set
 
  Object ID (or object.instance): ebrNportFppnManualFilter.0
 
      Object ID: ebrNportFppnManualFilter.0
 Value: ()
 Hex: 28 29 
 
  Enter an octet string (use "" for ascii and 0x for hex),
  or a decimal dotted string:
 "(3.2)"
 
 Successful set
 
 
  Object ID (or object.instance): ebrNportPortNumAddress.8.0.43.18.52.86
                  
 This object currently has no value assigned.
 
  Enter an octet string (use "" for ascii and 0x for hex),
  or a decimal dotted string:
 0x08002b123456
 
 Successful set
 
  Object ID (or object.instance): ebrNportPortNum.8.0.43.18.52.86
                  
 This object currently has no value assigned.
 
  Enter the object's integer value : 6
 
 Successful set
 
  Object ID (or object.instance): 
 

961.7CSC32::cxoras5.cxo.dec.com::GoodwinBrad Goodwin - NSISWed Apr 02 1997 00:1611
Michael,

I'll work with the customer on this. We would use their NMS but we were unable 
to get the mibs to load. We got a lot of errors when compiling them. They are 
using UB Netdirector, a real piece of work! I was looking around the net for 
some type of snmp manager to put in my laptop, but haven't found anything yet. 
Any suggestions for one?

Thanks,
Brad

961.8NPSS::MDLYONSMichael D. Lyons DTN 226-6943Wed Apr 02 1997 13:034
       Most Digital people use MCM accompanied by ManageWORKS (or whatever
    the correct caps are) or Polycenter NetView.
    
    MDL
961.9KAONIS::HYNDMANSled HeadWed Apr 02 1997 13:076
    
    Brad,
    
    	I think manageworks is now server works.
    
    Scott
961.10CSC32::bngpc.cxo.dec.com::goodwinBrad Goodwn - NSISThu Apr 03 1997 16:1910
Michael,

Have you had a chance to look at the port matrix gui to see if I specified the 
correct port matrix for the filter I want to set up. What I'm trying to acomplish 
with the filter is to not allow broadcast messages to output on port 6 or fppn 3.2.
Every time I try it, MCM hangs and loses connection to the agent, then it will come 
back and the filter will not be there.

Thanks,
Brad
961.11NETCAD::DRAGONThu Apr 03 1997 16:379
    
    Hi Brad,
    
    	This might be obvious, but make sure that your using the read-write
        community string. If a SET is performed on a filter matrix and the
        read-only community string is used MCM appears to hang for a long
        while. 
    
    Bob
961.12Do I feel stupid.....CSC32::cxoras44.cxo.dec.com::GoodwinBrad Goodwin - NSISThu Apr 03 1997 19:096
Ok, you can slap me up side the head. I thought I was using the correct 
community string, but guess what, I transposed a byte in the hardware 
address. Sorry to have bothered you with this, I think I have it all right 
now.

Brad