20 Most Recent 3Com 4500 24-Port Ethernet Switch Questions & Answers

There isn't a default IP. You have to configure it via the console port first.http://h20000.www2.hp.com/bc/docs/support/SupportManual/c02579469/c02579469.pdf

Username:monitor Password: monitor---monitor mode, view only manager manager--can change all except security features admin (no password)--sets security features IP: 169.254.100.100 or 169.254.100.99

Assign a static ip on your host machines.

to verify the ip address click start run and type in cmd then click ok then it will go into the dos mode in that page type ipconfig /all you will see all the ip adress

From your scenario what i guess is the two 5500's (A&B) are connected to each other also. Thats why the link between B&4500 is remaining down due to STP ( to avoid Network loop).
Please correct me if I am wrong.


What is the status of the link connecting 4500 to 5500 B when 500A is active and when 5500A is down .

If you are running STP i will suggest you to wait for 2 minutes after 5500A goes down and STP will be recalculated and the link connecting to 5500B will become active and then the route will also become active.

Best regards

Hi,
If you are creating only Layer 2 VLANs on the switch , you wont be able to ping the servers and Routers as they are in default VLAN1.
you can do the below steps
1. Create sub interfaces on the router LAN interface
2. Provide a new ip range to the new sub interface
3. Make the switch port connecting router as trunk, so that it will carry both the VLAN info
4. on your Labtop/PC give the IP address in the newly defined range
5. Make your switch port to be in the new VLAN

This will work , if you wont be able to configure the above settings, let me know i will give you the detailed config

i can't set ip address over 4 vlans. the 3com switch 4500 always give error message "there's not enough routing resources available".please help....

The primary connection method for those switches would be serial connection. In the box there should have been a DB9 serial to RJ45 cable. Hyperterminal default settings would allow you to connect.

if it allows telnet sessions, you would go to a command prompt and type:
telnet 192.168.1.2 (or whatever the IP address of the switch is.)

Ok it is may be do you to system is old needs up to date , so that the video may not have downloaded completely from the source web portal. The media player present in your handset is outdated.

Here is the standard pinout for a console port on a router to seriel port for computers

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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. Good luck!