Solved

3Com 5500G-EI 3CR17254-91 dual-purposed ports

Posted on 2016-10-23
2
84 Views
Last Modified: 2016-10-27
Dears,

I have 2 3Com 5500G-EI 24-Port (3CR17254-91) switch which has 24 port 10/100/1000 BASE-T besides 4 SFP-based Gigabit ports.

The  4 SFP-based Gigabit ports labeled as 25/11, 26/12, 27/23 and 28/24, ONLY one port of the pair is up. For example, if port gigabitethernet 1/0/28 enabled gigabitethernet 1/0/24 goes Administratively down automatically.

Does that mean the total functioning number of ports is 24 and it couldn't be 24 Base-T + 4 SFP ?!!

Note: the below post shows the same problem with no solution, I've tried all suggested solutions but didn't work.
http://www.networking-forum.com/viewtopic.php?f=27&t=3179&sid=71d6223782d8c31f5373056a0bfcba9b

Thanks,
0
Comment
Question by:Nourhan Hassan
2 Comments
 
LVL 3

Assisted Solution

by:Richard Murphy
Richard Murphy earned 250 total points
ID: 41856419
Basically yes these switches come with 4 dual personality  ports,  3com and h3c made 24 port switches with 4 gig sfp+ dual personality ports,  48 port the same and they made 28/52 ports that were independent.  You can however get interfaces cards for some models that give you 10g xenpac expansion.
1
 
LVL 27

Accepted Solution

by:
masnrock earned 250 total points
ID: 41861953
The short answer is yes, there are 24 functioning ports. 4 of them can be used either as SFP ports OR ethernet, but not both. Switches that are been 24 ethernet + 4 SFP are 28 port.
1

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How Can i get Two 3-User licenses of Quickbooks to work??? 6 87
IP range 6 65
Hidden network 2 43
Testing and simulating multicast traffic 6 14
Meet the world's only “Transparent Cloud™” from Superb Internet Corporation. Now, you can experience firsthand a cloud platform that consistently outperforms Amazon Web Services (AWS), IBM’s Softlayer, and Microsoft’s Azure when it comes to CPU and …
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question