Questions tagged [3com]
39 questions
25
votes
7 answers
How many VLANs are too few and too many?
We're currently running a netwok of 800+ PCs and 20+ servers, the network infrastucture is along the lines of Core Switch 10Gb-> Area Switch 2GB-> Local Switch 1GB-> Desktop. All running 3Com equipment(1).
We have 3 Area switches for four areas (A,…
![](../../users/profiles/2991.webp)
Tubs
- 1,194
- 3
- 11
- 19
9
votes
0 answers
Setting up IPv6 ACLs on 3com 5500g to block Router Advertisment messages
Is there a way to set up IPv6 ACLs on 3com 5500g switch to block RA traffic on access ports? I couldn't find settings for setting up any IPv6 ACL. Acording to guides, there should be ipv6 specific commands, but these were not available. My version…
![](../../users/profiles/171895.webp)
phandox
- 101
- 4
4
votes
2 answers
If a managed network switch were to overheat, would you consider it no longer reliable?
Here is the scenario - I have a network switch, one of several in a stack. It's fan failed. Soon, there were reports of users with network issues. After quickly replacing the fan, the users were fine, network issues were resolved.
I…
![](../../users/profiles/41580.webp)
Scott Szretter
- 1,860
- 11
- 42
- 66
3
votes
1 answer
How do I factory reset a 3com 5500G-EI?
I have inherited a 3com 5500G-EI without any configuration docs,
and I need to reset it to factory defaults.
What is the best procedure to do this?
![](../../users/profiles/90613.webp)
Stefan Andersson
- 31
- 1
- 1
- 2
2
votes
2 answers
3COM Switch dropping broadband
We have a 3COM 3C16980A Superstack3 switch in our office and it keeps dropping out broadband connection. Are setup is this:
Internet -> BT Box -> Wifi Router -> Switch -> cables run into the walls to all the sockets round the office.
Several times…
![](../../users/profiles/303266.webp)
Ross Coulbeck
- 123
- 4
2
votes
0 answers
How to replace a fan on a 3com SuperStack 4500 unit (and where to find a fan)?
I have a couple 3com SuperStack 4500 switches with failed fans. I am not having luck locating information on HOW to actually replace the fans, or where to find a replacement/what kind.
I know what to do, but was hoping there is some information…
![](../../users/profiles/41580.webp)
Scott Szretter
- 1,860
- 11
- 42
- 66
2
votes
1 answer
InterVLAN routing on a HP V1910 series switch
Recently bought a HP V1910-16G switch (former 3com 29хх) with IPv4 routing capabilities. After unpacking I did a firmware upgrade to the latest 5.20 Release 1513P06. I did set up additional VLANs (#2 and #3) and VLAN interfaces for those.
The…
![](../../users/profiles/156617.webp)
tintix
- 131
- 1
- 3
2
votes
3 answers
3com 4500 switch get some info with SNMP
I have 3com 4500 switch. I can got ram and CPU info with these:
1.3.6.1.4.1.43.45.1.6.1.1.1.3 - 1 Minute CPU AVG
1.3.6.1.4.1.43.45.1.6.1.1.1.4 - 5 Minute CPU AVG
1.3.6.1.4.1.43.45.1.6.1.1.1.2 - 5 Second CPU AVG
1.3.6.1.4.1.43.45.1.6.1.2.1.1.3 - Free…
![](../../users/profiles/86064.webp)
denizeren
- 329
- 3
- 11
2
votes
1 answer
Users loggin to 3Com switches authenticated by radius not getting admin priv and no access available with radius service down
Following the setup that I have for my Cisco devices, I got some basic level of functionality authenticating users that loggin to 3Com switches authenticated against a RADIUS server. Problem is that I can not get the user to obtain admin privileges.…
![](../../users/profiles/13979.webp)
3D1L
- 109
- 3
- 7
- 13
1
vote
0 answers
Connecting 2 single switches to a stack
I have a core switch made with 2 stacked Cisco SG500XG-8F8T switches.
Now I have to connect 2 3Com Baseline Switch 2920-SFP Plus to extend my gigabit network, but they are not stacked. So I connected them in this way:
switch3 (3Com) port 17 (SFP) ->…
![](../../users/profiles/177397.webp)
Mat
- 1,783
- 4
- 22
- 39
1
vote
0 answers
View Logs - HP Router
I have a HP MSR30-10 A router at the edge of our network. The rest of our switches are HP, but it turns out the the HP router comes from the old 3Com world and speaks a different language from the switches. Dang!
I'd like to view the logs for my HP…
![](../../users/profiles/179241.webp)
SteadH
- 666
- 3
- 16
- 32
1
vote
0 answers
why do I lose ping to a machine when using port mirroring / monitoring (sniffing)?
I am using port mirroring / monitoring in my 3COM layer 3 switches to look at network traffic (using wireshark).
Sometimes, I have found that I loose connectivity with the remote monitor machine (the machine receiving the port mirror traffic). …
![](../../users/profiles/41580.webp)
Scott Szretter
- 1,860
- 11
- 42
- 66
1
vote
2 answers
3COM switch "Can't find source file" error on tftp put
I am trying to upgrade my 3COM switch firmware. I am following the instructions on these…
![](../../users/profiles/142109.webp)
Alptugay
- 211
- 3
- 8
1
vote
1 answer
VLAN configuration
I have two 24 port 3Comm 2928 managed switches along with several smaller unmanaged switches. Additionally, each user has a VOIP phone that acts as a switch so both phone and PC can plug into the same ethernet jack.
I want to segment the network to…
![](../../users/profiles/156586.webp)
Chris
- 13
- 2
1
vote
1 answer
VOIP phones stop working when spanning-tree (STP) enabled on switch
I have a few different types of managed switches, including mostly 3com Super Stacks, Baselines (for example, one specifically is a 3com baseline pwr-plus 2928).
Most of them are configured with two VLANs, one for data, one for voice (VOIP).
It all…
![](../../users/profiles/41580.webp)
Scott Szretter
- 1,860
- 11
- 42
- 66