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0answers
39 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 ...
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1answer
40 views

Wifi repeater 3com 7760

I have a problem with a wifi repeater that I am configuring (3Com Wireless 7760) Here some pictures of my installation of the device: https://imgur.com/a/v9uiF According to the manual of the ...
1
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0answers
38 views

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 ...
1
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0answers
115 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
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1answer
193 views

HP MSR 30-10a Router - Route Traffic over Default Route

We have a brand new HP MSR 30-10a Router. We have a fairly simple routing situation - we have two IP blocks, one which has a route out. We need things on the first block to go through the router, and ...
0
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1answer
753 views

3com switch has been set to forwarding state

i receive this error on the 3com switch syslog. Oct 4 10:25:25:367 2013 MSTP Information MSTP_FORWARDING Instance 0's port GigabitEthernet1/0/37 has been set to forwarding state. Oct 4 ...
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2answers
673 views

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 links: http://alextakacs.blogspot.com/2011/06/upgrading-firmware-on-3com-4500-switch.html ...
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0answers
537 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 ...
0
votes
1answer
113 views

3com VCX - how to get a dump of outgoing phone calls

I am looking (hoping) for a way to dump a list of all outgoing calls from the VCX for a time period? Possible via the web interface, or via the ssh interface. For example, we need the date (time ...
2
votes
1answer
4k 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
114 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
485 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
348 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
286 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
2answers
155 views

VLAN Testing 3com switch

Hi there I am currently setting up a couple of vlan in work. Hoping that this is going to help with network traffic. The one question that I have is how do I test the vlan when I have finished to ...
0
votes
1answer
268 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
140 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 ...
0
votes
1answer
821 views

3com 3101 or 3102 VOIP phones will not get DHCP/connect to network unless in specific location?

I am trying to figure out why at our company the 3com 3101 or 3102 phones we use, when NEW out of box will not jump on the network and update, unless they are at a specific physical location. For ...
0
votes
1answer
323 views

AP with multiple SSIDs and VLANs

I have some Cisco access points that I have configured with multiple SSIDs. Each SSID has its own VLAN. VLAN 1 for internal networking and VLAN 2 for external users and guests. Our juniper firewall ...
0
votes
1answer
185 views

HP networking unstable over fiber connection

I have a 3com Baseline Switch 2928 that's connected over fiber to a 3com superstack 4500. The fiber is singlemode and has the suitable SFP modules on both switches. The switches (and connected ...
0
votes
1answer
243 views

NIC cards for ClearOS box (or other software proxy/firewall)?

I am building a few ClearOS boxes, and am trying to use components I have available without purchasing anything (yet) if possible. I have some 3com 3C905-TX cards, a 3C SOHO-100, some 3C905B-TX ...
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1answer
269 views

3COM Switches that have 1000Base-X SFP ports

I have been upgrading switches at the company I work for and their technology here is prehistoric, but the new switches I have received from my director are the 3COM 2928-SFP Plus. I have been reading ...
1
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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
1answer
390 views

Manual for 3Com SuperStack II NETBuilder?

I have a client with a 3Com SuperStack II NETBuilder (3C8432), and he wants me to set it up for him. The only problem is that I have no experience with these routers and I can't find it's manual ...
2
votes
1answer
12k views

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?
1
vote
1answer
226 views

Utilizing two outside internet subnets - routing or physical connection ideas?

I am looking for some ideas on how I might utilize a second 5 internet ip address subnet I have available from my isp. Currently I have the isp cable modem which has 5 ethernet ports on it. It is ...
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
216 views

Troubleshoot 3COM 3001 NBX ip_unknown problem

Things are getting pretty desperate here... My 3001 NBX from 3com (R6_5_20) has been working perfectly for months... Now it works for more or less an hour and then all the phones in the branch ...
0
votes
0answers
860 views

V3000 will not discover a used 3Com 3102 business phone

We have a 3Com V3000 NBX setup for Ethernet only and are trying to add a used 3102 business phone. When we plug the phone into our local network it requests and IP address via layer 3 and eventually ...
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. ...
1
vote
1answer
347 views

HP/3com 9552 802.11n AP won't let some clients connect

I splurged and bought an HP/3com 9552 802.11a/b/g/n access point. Like most enterprise-grade access points, it has very fine-grained configuration options. I'm pretty sure I've configured it ...
0
votes
1answer
196 views

Adding 10GbE to a ring of 3com 4200 switches

We have 5 3com 4200 switches forming a ring (connected using 10GBase-CX4 XENPAK modules) and would like to add a few servers with 10GbE adapters soon. The offer we are currently looking at consists ...
2
votes
1answer
5k views

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 ...
0
votes
3answers
2k views

Problem connecting a 3Com 2952-Plus switch to a Cisco 3750 switch

Connected a 3Com 2952-SFP Plus switch to a Cisco 3750 switch via fibre. There is a light on the 3Com end, but nothing at the Cisco end, and no traffic will flow. Have swapped SFP's, have swapped fibre ...
13
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7answers
10k views

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 ...