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

Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

726.0. "LAN Bridges" by CGOO01::CRICK () Fri Feb 15 1991 15:14

    I have a customer that would like to use DECmcc to manage his Ethernet 
    network.  He would like to know if he has to dedicate a Bridge on each
    segement to collect Ethernet statistics or can he continue to use his
    bridges (LB 100, LB 150 and LB 200s) to provide statistics and bridge
    functions.  I assume that the LB 200 should be able to both functions.
    What statistics, data will he not get with DECmcc that he would get 
    with LTM and dedicated LB 150s.
T.RTitleUserPersonal
Name
DateLines
726.1BridgesZPOVC::ANDREWWAITESSingapore - Asia's WellingtonFri Feb 15 1991 16:3814
    Hi,
    
    	Can't answer all your questions but here's a start.
    
    	The LB100 (Rev E I think) and LB150 can run LTM. The 200 can't for
    some reason.
    
    	When a bridge is running LTM it cannot act as a bridge. It is
    either a bridge or an LTM station.
    
    	I'll leave MCCs influence on all this to the MCC people.
    
    ANdrew
    
726.2Some quick answers/comments.CHRISB::BRIENENDECmcc Bridge|Station Management.Fri Feb 15 1991 20:0224
RE: LB100/LB150/LB200 and LTM
-----------------------------
LB100s and LB150s can run the LTM-Listener microcode, which converts them
from Bridges to Monitors. Since LB100 and LB150 use basically the same hardware,
the downline-loadable image was made to work on both.

There is no such downline-loadable image for LB200s.

RE: LB200 as a Bridge+Monitor
-----------------------------
The LB200 provides byte counters, etc, which allow the Performance FM to
calculate Network Utilization (among other things).

What one GAINS by having a LB200 (as opposed to a dedicated LB150 monitor) is
a combination of Bridging and some monitoring.
What one LOSES in not using the dedicated LB150 is the breakdown of Utilization
by Protocol Type/Address/etc and stuff like TOP n TALKERS.

Does this help?

						Chris