1
vote
0answers
24 views

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 ...
1
vote
0answers
101 views

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 ...
0
votes
0answers
488 views

Does anyone know how to configure a 3Com 4210 switch?

Does anyone know how to configure a 3Com 4210 ? I think I have managed to do a factory reset (Control-B at console prompt on boot and choosing to ignore startup file). The switch does not get an IP ...
2
votes
1answer
3k views

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 ...
1
vote
1answer
106 views

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 ...
1
vote
1answer
425 views

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 ...
4
votes
2answers
327 views

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 ...
1
vote
1answer
268 views

3com SuperStack 3, is it possible to replace a unit with a newer 'hp' equivalent unit?

We have various super stack's, mostly 3com 4500 and some 5500 stacks. I know HP now owns this line, so I am hoping someone knows if it's possible to purchase a single HP 4500G for example and ...
0
votes
1answer
265 views

Managing 3Com Switch

I just bought an old 3Com switch off eBay to play around with. The model is 3c17302a. The console port is a male D9 port. This may seem extremely obvious, but how do I connect to this port? I have ...
1
vote
0answers
133 views

Duplicate packets on network after disconnecting wireless access point on separate VLAN

We have a network with a few switches. One of these is a 3com 4500, where there are many computers connected, a custom linux firewall and a wireless bridge. The port where the wireless bridge and the ...
1
vote
3answers
1k views

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 ...
0
votes
2answers
1k views

3COM 3870 Switch Fan Failed alert

I have a 3COM 3870 switch that is randomly getting a Fan Failure alert. When I took the cover off, all the fans appear to be working fine - even when it is faulting. None are grinding or making any ...
0
votes
1answer
251 views

Do 3Com switches support generic SFPs?

I have a 4200 series switch with an empty sfp port, and existing unused fiber run (62.5nm multimode) to another building that I hope to bring up, with a 1000base-SX connection on the other end. ...