Question about 3Com Computers & Internet
I don't know anything about these units, nor do I have time to source any docs for you, but maybe you can try connecting a PC directly to the port your patch panel is connecting the the switch from, you can at least see if that port is working.
My next and only other suggestion is to invest in a "LAN cable tester". In my area, you can find cheap ones for U$20.
The tester will allow you to check connectivity between any two ports, and allows you to test both patch links and individual CAT5/6 cables.
Posted on Nov 22, 2017
Found this on 3Com website: The SuperStack 3 Switch 3870 family (3870-24 and 3870-48) can stack up to 8 units high. Stacks can be formed with any combination of 24-port and 48-port units, with a maximum of 384 (8 x 48) front panel ports supported. When connected together, a stack of units is managed as a single entity. All units in the stack need to run the same release of the operational version code (firmware). When units are stacked together, they operate in a master-slave relationship. One unit acts as a Master and the other units act as slaves. When looking at a stack of units, the master can be identified by looking at the Stack Master LED on the left side of the switch. The Stack Master LED is green for the Master. If the unit numbers are out of sync, go to the CLI command that allows users to re-number their units- system / control / renumber. This will re-number the units in the stack. It will take about a minute or two. The master is the only unit that has a visible command line interface (CLI) when a console cable is connected to it. If you connect the console cable to a slave unit, you will not see the CLI menu, but instead see slave status messages being displayed. The Master unit may not be unit 1. http://knowledgebase.3com.com/consumer/esupport.asp?id=GUIDbfa9caa4%5F138f%5F4681%5Fbaaf%5F5c99ec5b7ff4&resource=&number=0&isExternal=0&nShowFacts=&nShowCause=&nShowChange=&nShowAddInfo=&activepage=statement.asp&bForceMatch=True&strCurrentSymptom=3C17462&searchtype=normal&searchclass=&bnewsession=false&selecttype=match
Posted on Jul 27, 2007
Posted on Jan 03, 2009
Hi, You can find the connection settings here:
Hope this solves your problem.
Posted on Jul 04, 2009
SOURCE: i cann't connect to my switch
Your superstack 3 should have a 9 pin male connector at the back labeled "console port" you need to connect this to your serial interface on your pc or laptop. With 3Com you also need to set your baud rate to 19200 as this the default for 3Com.
Posted on Oct 19, 2009
Tips for a great answer:
Jul 16, 2013 | 3Com Baseline Switch 2024 24-Port...
Jan 14, 2008 | 3Com SuperStack 3 3824 (3cr17402-91-uk)...
Dec 01, 2007 | 3Com SuperStack II 610 Networking Switch
Nov 20, 2006 | 3Com SuperStack 3 3300 TM Networking...
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