June 22nd, 2005 14:00

Did  you change the IP address on the switch to be compatible with your network before you connected the 2724 to your main switch?  Remember that the default management IP address on the 2724 is 192.168.2.1 which may not be compatible with your network.

7 Posts

June 22nd, 2005 14:00

Yes I did. The Web inteface can be contacted, but it doesn't function correctly. It's almost as if the switch doesn't know where the MAC address of the server is when I connect it to my main network switch (3com).

June 22nd, 2005 17:00

Can you expand on what you mean by "not function correctly"?  What doesn't function?  So you are able to connect to it and you can login to it but something doesn't work at that point?

I'm also not clear on what you mean when you said that the switch does not know the MAC of the server.  If you can connect to the web interface then your packets are getting through so at least the route through your network must exist for this to function properly.  At first I thought you could not get to the web interface at all so I was going to suggest that you look at the route through your network and also to make sure you configure the default gateway on the 2724.  However if you are saying that you can access the web interface and can login then its not a network connectivity issue at least.

So please confirm the following:

  • You can ping to the 2724 from your workstation (your server).
  • You can connect to the web interface and you can login to the web interface.

Then please provide the following information:

  • What exactly is not working for you after you login?
  • If it's performance related then please explain if the performance or responsiveness is the same on all screen or specifically problematic on specific screen?
  • You mention you get "code and error" please clarify?
  • Please identify which version of windows you are running and the version of IE you are using?

7 Posts

June 28th, 2005 16:00

Basically I get dropped packets. If I do a ping from the 1750 server, I only get about half the returns and the rest time out. I am using 2K server with IE 6.x. When I mean code, instead of seeing the web page correctly I get raw HTML on the screen. I think at this point that the problem is with the NIC's on the server, but I had hoped that a Dell server connected to a Dell switch would make life easier, I guess I was wrong.

June 28th, 2005 17:00

I will contact you offline for additional information and will try to reproduce this problem in my lab.

June 29th, 2005 12:00

According to the scenario, when the Dell server is connected directly to the Dell switch there was no problem observed so it is unlikely to be an incompatiblitily issue between Dell server (NIC on Dell server) and the Dell switch.

The problem is observed when the switch is connected into the network via the 3COM switch.  Now the server needs to go through the network to get to the Dell switch.  The observed symptom is lost of ping packets between the server and the switch.  This may be a result of a number of different kind of network problems including duplicate MACs or IPs, or various other network configuration issues.

I have executed the scenario as described: first connecting directly from the server to the switch then configuring the switch IP address; next moving the switch into the network and again trying to reach the switch web interface from the server.  I have not observed any problem doing this.

My lab network consists of a number of different switches from different vendors including Dell.  However, I do not have access to a 3COM switch. 

Also please let me know which 3COM switch you are using.

Cuong.

4 Posts

April 13th, 2007 14:00

I am seeing the same issues on my 2724's (all 3 of them).



The GUI is broken. I can't even manage the switches anymore, as it is hit-or-miss whether or not I can even log in to them. Once I finally get logged in (just keep trying and trying), then it is highly unlikely that I will be able to make any changes, as the switch seems unable to format any pages properly.

It seems like the CPU on the 2724 is barely powerful enough to run the GUI with no load on the switch. Once the switch gets busy, it seems unable to run the webserver in a stable manner.

I too get broken code displayed, as opposed to a fully formed webpage. Half the page comes up formatted, and the rest is code which cannot be executed by my browser because the code is broken. The code may be broken because of packet loss, but I doubt it, as it is a TCP connection.

The MGMT interface drops 75%+ of packets at this point, yet latency is nonexistent through the switch from node->node. These switches are almost impossible to monitor, as they drop so many packets that you constantly get a page saying the devices are down.


This is not a browser issue, or an issue with my PC, nor a connectivity issue through my network. I can hang other devices off of the same fiber with the same IP, and they work and respond just fine.

2 Posts

October 26th, 2010 16:00

I've had the same problem for some time. My switches are located around the world, and I think it has to do with the long delay in connecting to the switch's management page. Some of the web content doesn't make it all the way back, and my browser indicates that the web page has errors. The web page relies heavily on Javascript, and some of the JavaScript code is lost. This either causes formatting issues on the page, or affects page functionality. Sometimes if I repeatedly reload the page it is functional, until I click on a menu link. I haven't seen this problem with the 2824, only all our 2724 switches.

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