I'm adding a 2nd 3com 2920-SFP switch to our network, and was wondering how to connect them up in series(?) for more available user ports. They have 4 SFP ports, and wanted to know if this was how its done.
View 1 RepliesI'm replacing 2 3COM 4500 Swithes with the SG300-52 Cisco switch. We have 3 VLANs, 10, 20, 100. The switch is set for Layer 3 and I have setup DHCP relay. what settings i should set on the Cisco for the following setups:
3COM Setup
#
interface GigabitEthernet1/0/1
[Code].....
I have several autonomous 1240ag AP's that I need to enable a second ssid(Guest and VLAN2) for guest access and while I have configured the AP's according to the driections, I am not able to connect to the second ssid(Guest), but it is broadcasting. When I check the logs, I do not even see my laptop or any other device for that matter, trying to authenticate, what am I missing? I can see, connect and get an IP from the first ssid(Production and VLAN1), which is on the native VLAN and my 3COM 3C17203 switch port(14) is tagged for both VLAN's. Although I am sure that this would work better with a Catalyst switch, but it is not in my budget to replace all 4 of these, but I need this to work.
View 3 Replies View RelatedWe’ve just begun the transition from our old 3Com switches to new Cisco switches and we’ve encountered interoperability problems as we start the transition.Goal: Extend 6 VLANs (each representing an IP subnet) via fiber from a port on the 3Com 5500G-EI to a port on the Cisco SG-300-52
We assign an IPV4 address to the Cisco SG-300-52. We can successfully ping/web-manage at this address if we do a temporary copper jumper from a 3Com switch to the Cisco. IP address is in the subnet assigned to VLAN7•2) At the 3Com side, the fiber port is set as “hybrid” and is passing VLAN 1 untagged; VLANs 3-8 tagged•3) At the Cisco side, the fiber port is set as “trunk” and is defined with VLAN 1 untagged and VLANs 3-8 tagged.
If I try to change the management interface on the CISCO from VLAN 1 to VLAN 7 (as I would on the 3Com), I lose connectivity over the temporary copper connection•B)
If I remove the temporary copper jumper from the Cisco (keeping the “working” management IP address) and create the fiber link between the 2 switches, I lose connectivity to the management IP , If I set the 3Com fiber port to “access” and make the fiber connection, I can ping the management interface – but of course, I can’t pass the other VLANs to untagged access ports on the Cisco – and it has the fun side benefit of messing with IP management settings on other 3Com switch stacks attached to the 5500G-EI. However, it does demonstrate that we can get network traffic communicating over the fiber link between the 2 switches.
How I can proceed to a) have the management IP address in the IP subnet defined on VLAN 7 while passing the other VLANs to access ports on the Cisco? BTW, I’m a networking neophyte (it’s a very small part of my job and I do it infrequently), so I prefer to use GUI management to CLI options, although I can perform CLI configuration if presented with the right commands.
Our company currently have a 3com 2816 connected to a 3com 4800G through a trunk. The 4800G connects to the PBX and to the ip phones/computers. We are currently using vlan1 (192.168.100.n) for data and vlan 3 (192.168.101.n) for voice , Ip addresses are being issued by a DHCP server. Each user has an assigned IP phone and it has an ethernet port that connects to each computer. This setup has been working properly until I purchased an SG300 and replaced the 3com 2816.
The ip phone is showing a bad gateway and the PC are getting an ip address of 192.168.101 (which is for voice). Theoretically it should work, but what is weird is, it seems the SG300 trunking with the 3com 4800G is not working. Is it possible that it is on ISL mode rather than dot1q?I also saw its running RSTP, should I changed it to classic STP?How do I fix this or what troubleshooting should i do?
The SG300 is configured as a layer 2 switch. Configuration for the trunk below:
interface gigabitethernet27
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 3-4
macro description switch
macro auto smartport type switch $native_vlan 1
I would like to ask if it is possibe to stack a 3Com 3cr17161-91 to a layer 3 Cisco Switch? The two will be stacked using the avaialble SFP modules.
View 4 Replies View RelatedI have problems too when I connect 3com and Cisco.
I have 2 5500g 3com switches connected with 2 links. If LACP is disable, this causes serious problems and STP not works.
Logically , the link, is a port trunk with all the vlans permitted. One switch has STP enable and the other RSTP. Why this not works fine? I need to configure MSTP maybe? PVSTP is not allowed on this switches.
I have my network with severals SG300 switches.I have one of them like my core switch working in layer 3 mode. With 2 vlans and vlan interfaces to each vlan.Everything is working ok.But now i have to connect one 3com unmanage switch that have host from vlan 1 and 2. How should i connect this switch to my Cisco sg300 switch?
[code]...
I tried to configure a 2920 with a WIC=HWIC-1CE1T1-PRI. In the serial 0/0/0:23 I set the isdn switch type to primary-ni2c. When I then exit configure mode and show interface se0/0/0:23 the switch type has been changed to primary-ni. Is this normal?
View 1 Replies View RelatedHaving 2 router with 2 sub interface configured with HSRP. The server sending the data have the route default gw xxx.xxx.xx.252 HSRP address. But on of the routers did got HW problem so we did shut it down, R2 with IP xxxx.xxxx.xxxx.251, problem so the traffic didn't go there correct when was using the HSRP address some packaged went there but not all of them no blocks in the logs. But then we did change the server direct to to the working router R1 xxxx.xxxx.253 everything did start working fine again. was working fine. Logs i got in the router was max tcp half-open connections.
I am wondering if something wrong in the configuration below and why the traffic didn't got there correct when using the HSRP address. Its working fine when using R1 IP address. The devices are 2 Cisco 2620 routers.
R!1
interface FastEthernet0/0.192
description Prod_Inside
encapsulation dot1Q 192
ip address xxx.xxx.xxx.253 255.255.255.192
ip access-group Inside_Outside in
ip verify unicast reverse-path
no ip redirects
[code]...
I typed such commands:Code:
View 3 Replies View Relateddell xps t500
View 1 Replies View RelatedI have 3com router and it is working fine. The issue is that when I am taking the router out of the electricity and reenter it back it will not save my settings and I will have to log in again to change the settings.
View 1 Replies View RelatedI have a 3COM 3CRUS2475 24 Port PoE Switcher that I connect a number of Crestron control units to.All of a sudden yesterday I could no longer see the network on any device including Ipads, Laptops etc.I have rebooted several times and restarted all of the access points around the house but still cannot see the network. I have also connected a WAP directly to the Switch with a new LAN and still nothing.
View 1 Replies View RelatedI am trying to set up my 3Com wireless Access Point that was given to me. I have searched for software to set it up but can't find any.I have read somehwre that the software doesn't even work on Windows 7 anyway.know the default ip adress of this router or how to get into the config pages to set it up.
View 19 Replies View RelatedI just had to reinstall windows 2000 with service pack 4 on my Latitude C800 and now can't get the control panel to recognize my modem. The manual selection option doesn't display an option for the 3Com 3cn3acx556 modem. Do I need an additional driver? If so where can I find it? I've tried the Dell download site and the 3Com and US robotics sites all with no luck.
View 3 Replies View RelatedI just bought WAP4410N from about 3 days ago, I would like it to work as a wireless repeater to my 3com router model 3CRWDR100A-72. In the router setup page I enabled WDS, made a search for the wireless networks and I found the WAP signal and the router already got its MAC address. I went to AP mode in the WAP4410N, enabled the WDS repeater and made a site search for the router and got its SSID and MAC address.
Although all the above steps, everytime I connect any client to the WAP4410N I can not connect to the internet, all what I got is just the IP of the WAP and subnetmask without any default gateway nor DNS
In addition I tried to setup the WAP as wireless client epeater, but the same thing hapen, I can not connect to the internet through the WAP.
I am using WPA encryption on the router but I did not get any notification to enter the pass key during the setup of the WAP, which is strange for me!
Do I have to change my 3com router to linksys one as the 3com is not compatible with the WAP?
I am tryıng to confıgure port base Vlan on 3com S7900E switch. There are already 9 of them confıgured but one is missing and I need to add 1 more. I have done this on cisco routers but cant get my head around 3com commands.
View 1 Replies View RelatedHow to add a Linksys router for wireless access to a 3Com switch. model 3CGSU08A I have two choices for routers E2000 and a WRT54GL which one would be best and how to setup?
View 1 Replies View RelatedI am trying to trunk between a 3Com 4800g and a Cisco 3500xl. I can get the a PC that connects to a vlan 1 port on thecisco switch to connect to the 3com switch and get connectivity. However, I cannot get anthing on the cisco switch that is on vlan 2 to connect and get dhcp. I am not a 3com guy, so I am not familiar with the command and configs.We have 2 vlans on both switches: Vlan 1 is Admin and Vlan 2 is Student.
View 17 Replies View RelatedI have setup both Vlans on 3com and cisco. but it seems they cant talk to each other.ive setup both on trunking mode?
View 6 Replies View RelatedI've been trying to find the answer for this for ages. I'm now hoping a network pro can provide it here.I have two Gigabit switches connected by a single Cat 5e cable of length 10 metres. My servers are on one switch, and clients on the other. We don't seem to get good speed on the network, so I am investigating various issues in turn as I come across them.The Question is: Would I achieve faster packet throughput between switches by filling the empty RJ-45 sockets with additional Cat 5e cables, or will it have no more effect than the single cable there at the moment?
View 4 Replies View RelatedI have the above mentioned switch. I assisgned an IP address to the switch some time ago, but never had cause to use it (as it was purhcased as a spare).The problem I have now is that I cannot ping the device or browse to it via IE. Using hyperterminal and the CLI i have attempted to assign the same IP address, but i get a warning along the line of already assigned.I have set IP's to other 3COM model switches without problems. why I cannot ping this device or assist in connecting to it via IE?
View 6 Replies View Relatedchoosing a core switch, to replace a swich 3com model 4924, its main function is to support a 4-LAN switch cisco 2960 (100 users) and a ring cluster of 12 servers.obs. Current 3com core switch has 56 Gbps performance and 41.6 million packets per second.
View 3 Replies View RelatedI have at the core a CISCO 4503 and need to connect various 3COM 3300/4400/4900 access switches thru fiber. The problem is that the Cisco core 4503 switch fails to recognize only the 4900 3com switches ie the link status shows down. The fiber multitude link is tested and OK.The modules on both the switches ie 1000baseSX are also tested and ok.
The Cisco switch has a 6port gb ic with 1000baseSX moules and the 3COM 4900 has a 4-port 1000baseSX module.
I have switch.Broadband connection i want to share it among all 5PCs.By ising ICS and switch can do it??
View 1 Replies View Relatedi m trying to connect to my linksys router set through my browser. i m unable to do so. using chrome browser the site192.168.0.1 is not connecting.
View 1 Replies View RelatedTrying to connect SG500X-24 switches to a new installation of MOE (four sites)provided by Century Link. I have tagged the uplink port with the MOE vlan, but traffic does not want to pass through.
View 1 Replies View RelatedWe need to implement VLANs on my company's network. I have 3750 L3 swtich, ive setup 3 vlans for testing. ive setup SVI everything.now how do I connect it to 3com that will also use VLANs. should I set trunk port of cisco and 3com? or no need?
View 2 Replies View RelatedCurrently I have 2 different modem running in my working area which is modem A and modem B. Whenever user from Modem A(192.168.0.1) or Modem B(192.168.0.10) would like to print or scan something using the shared printer, I need to manually plug the cable into either Modem A or Modem B depends on the network the user are currently using.How I do previously is only set DHCP on Modem A and disable DHCP for modem B so that Modem B will share DHCP assigned by Modem A. Both modems connect to the same Switch with the printer cable so both network user can use it together.But the problem now is I have to enable DHCP for both modems and causing the previously method can't be use anymore. So is there any other way that I can link both Modem A and Modem B with each assign different DHCP to link with 1
View 5 Replies View RelatedHow to connect 2 cisco modem in 1 3com router.
View 6 Replies View Relatedmy computer has windows 98 and when i connect it to my router it can not connect to the internet! what do i need to do?
View 1 Replies View RelatedI have a building with 30+ pc's, printers and cameras. I do not have a "server" setup, however I want them to be connected to the T1 line comming into the building for internet as well as file sharing, etc.Currently, I have the T1 line connecting to as Linksys E3000 wireless router. From there I have a cable connected to the wireless router (it has 4 ports also) and then going to a Netgear FS524 (24 Port 10/100 MBPS Fast Ethernet Switch) via port number 24. I then have another CAT5 cable connected to a port on this switch, extending to a D-Link DES-1024D (another 24 Port, 10/100 switch)I then have the 30+ CAT5 cable coming into all three of said devices... No then, I get Internet connection on all units, the problem is that I cannot see all of the devices.
View 2 Replies View Related