a device that bridges network segments, operating at the OSI link layer level.

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303 views

How to connect two switches with a router?

I am trying to learn computer networking by experimenting on cisco packet tracer. Here is what I have done, but I see that I cannot create a static route for it. The cisco packet tracer throws error - ...
8
votes
4answers
689 views

How can I use a web interface that requires a much older browser?

I have an old Netgear GS700TP that can only be managed via its web ui. For the most part, that works ok, but the page specifically where you assign ports to a specific VLAN doesn't render in current ...
0
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2answers
173 views

How can I configure a Netgear prosafe switch to route all network traffic?

I am setting up a small network and am out of my depth! Someone prior to me joining the team has bought the kit, now I'm attempting to configure it all to work. I have noticed that the network ...
1
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0answers
124 views

LAG Managed to Unmanaged switch

I currently have a brand new 24 port unmanaged switch. Also I just got some quad Intel NICs for a few of my servers. Therefore I am going to buy a 24 port managed switch, to setup link aggregation ...
1
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2answers
102 views

Upgrading Layer 2 Switched Network to Layer 3

I currently have a business network comprised of older but still fully working Layer 2 managed GigE switches. If I would like to have inter-vlan routing on this network (without having to setup a ...
1
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1answer
111 views

Host using Linux bond mode 1 (active/backup) connected to 2 x independent switches

I have a host using Linux bond mode 1 (active/backup) connected to 2 x independent switches. Please can someone confirm if this is possible for successful failover between NICS or do I have to ...
0
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1answer
59 views

Netgear FS728FP - VLAN traffic isn't flowing

I'm trying to set up separate VLAN's on a new Netgear FS728FPv2 switch. I've never configured VLAN's before. The switch works fine with the default config, with every port as UNTAGGED at VLAN 1 (...
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votes
1answer
43 views

How would I access a Cisco router for configuration/management over the public internet

I want to connect a cisco router (2950 series) to my normal broadband router supplied by my ISP. I want to test whether I can access the router over the public internet for configuration/management. I ...
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1answer
3k views

Mikrotik switched VLAN configuration

With Routerboard 450G I want to configure the 5 Ethernet ports as follows: ether1: vlan3, untagged ether2: vlan1, untagged ether3: vlan2, untagged ether4: vlan2, untagged ether5: vlan1-vlan3, tagged ...
0
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1answer
36 views

VMware systems not working on SRW2048 swtich

I received an old Linksys SRW2048 gigabit switch and have used a straight-through serial cable and the console port to reset the flash config back to defaults so that it is configurable for our ...
0
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1answer
143 views

ensure “switch redundancy” on a network

I'm struggling in connecting two Windows 7 PCs (each with a 2 port Intel NIC) via two complete redundant paths. And I want to make it transparent to the services on that system. I was thinking on ...
12
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4answers
1k views

Why is CAT rating not applied to switches?

I see patch panels all come rated as CAT5e, or CAT6 (and so on). I understand the difference between CAT5e and CAT6 cables, more stringent interference shielding, etc. What I don't understand is why ...
3
votes
1answer
249 views

pfsense port-security limit mac to 1 (any mac allowed)

I am trying to set up HP procurve routers (25xx and 26xx) with port-security. Goal is to allow client devices and routers. But to disallow a switch, AP or a router in bridge mode. This should be ...
1
vote
1answer
95 views

Packets being routed to the wrong IP

Looked around, can't find a similar issue anywhere... I have been having some very strange and hard to explain problems on my network lately, and in my efforts to find the cause, I came across an ...
1
vote
2answers
90 views

Trying to hookup 10-15 laptops to a switch, could someone point me in the right direction?

Let me start off by saying I am not a system administrator, however I am desktop client support. I have the need to have about 10-15 laptops to be hooked up to a switch that gives all 10-15 laptops ...
1
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2answers
115 views

set the Ca name on unmanaged mellanox switch

How can I set the Hostname/Description of a Mellanox/Infiniband unmanaged switch? I would like a way to abstractly distinguish quickly which switches are which when doing 'ibswitches' or '...
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1answer
118 views

IRF HP 6125G Blade Switch : determine MAC address of each member

I have a little problem with my HP 6125G Blade Switch. Just to precise, I don't understand much IRF configuration. So i have a hp C7000 blade systems, with embeded blade switches (4). The switches ...
2
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2answers
217 views

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 ...
0
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1answer
122 views

iSCSI switch replacement (2 VMware hosts)

Good morning everyone, I recently bought two unmanaged NetGear 1gb switches to replace our older unmanaged Cisco 1gb iSCSI switches. Right now, the only devices currently connected to this network ...
3
votes
0answers
98 views

Opennms - Physical interface update on Cisco Switches

I'm using opennms version 16.0.2-1 on ubuntu server 14.04 LTS. I'm configuring some cisco switches to send traps to openms. The traps are notified to events in opennms, if i put a physical ...
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0answers
142 views

Cisco 3120 blade switch does not boot after power outage

We use a Cisco WS-CBS3120G-S in a HP BladeCenter. After a power outage, the switch will not boot anymore. The switch dose not output anything on serial console. The LEDs SYST, STCK and active (under ...
2
votes
1answer
47 views

Adding a wired network to our small office

I'm adding a wired network to our small office. We have about 10 employees but may double to 20 in the next 6 months. We have a PC Engine APU router with three ports: Port 1: Uplink Port 2: Unifi ...
0
votes
1answer
758 views

How to route traffic between 2 VLANs on different subnet

I have the following problem: I have one interface eth0 with IP 172.20.51.61/24 I have configured 2 VLANS on the same machine: eth0.120 : 172.20.52.61/24 eth0.200 : 172.20.54.61/24 I also have a ...
3
votes
0answers
88 views

How to get the topology of a layer-2 switch network with the switches' forwarding tables?

Suppose I have a list of layer-2 switches that do not support LLDP (Link Layer Discovery Protocol) but support SNMP. I have the management IP addresses of these switches, but I don't know how they are ...
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votes
1answer
75 views

Connecting Win7 to Win7 through switches, EnGenius, and Routers

Weird networks, causing weird problems. I am a new employee at this company, the network is a bit weird, but I have figured it out to a degree. I have some networking knowledge, but not greatly versed....
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votes
1answer
202 views

configuring cisco switch sg-300 20 can't change vlan name

I have this very strange issue. Not a biggy because I can do it using the GUI but it still drive me nuts. Just out of curiosity whether anyone has been through this and know the answer to it. It's ...
-1
votes
2answers
228 views

Will computers connected to a switch have a different ip? [closed]

I want to set up a network switch with several servers connected to it that must be port forwarded. Please refer to the below diqgram for my setup: ___Computer 2 | ...
3
votes
1answer
1k views

HP ProCurve Preventing Loops and Users Plugging in Unauthorized Switches/Access-Points

We have a HP ProCurve 2530-24-PoE (J9773A) switch, recently I had a user who plugged in an Apple wireless hardware device to the network - whenever it was connected I got a ton of broadcast warnings ...
0
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0answers
3k views

Server 2012 R2 Hyper-V Virtual Switch host mac address conflict 331FLR

I have 3 new HP DL360G9 servers all running Server 2012 R2 standard with the Hyper-V role installed. All the servers have the built in Intel 331FLR 4 port gigabit nic. I have the ports teamed into 2 ...
3
votes
0answers
142 views

Stream IPTV through SSL VPN

I have a question about streaming IPTV through Cisco ASA5510 ssl vpn. My current setup at the moment is: Public - firewall (asa5510) - L3 switch - L2 switch But my iptv source feed is coming to L3 ...
-1
votes
1answer
234 views

Switch port VLAN configuration

I have a problem with my switch: ProCurve Switch 2810-48G I got 2 VLAN with this configuration: vlan 1 "DEFAULT_VLAN" untagged 1-36 ip address 172.16.40.201 255.255.252.0 tagged 37-...
1
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1answer
3k views

Nic Teaming Windows Server 2012 R2 - No network connection

I have 2 100Mbps NIC cards installed into PCIe slots and connected each card to it's own desktop 8 port switch. My Settings: Mode: switch-independent Load Balancing: Dynamic / Address Hash VLAN: ...
1
vote
1answer
173 views

Reasons for missing network access on Cisco switch

I'm having problems with a Cisco Catalyst 2950 switch, specifically I'm unable to connect to the router/get internet access through it. The setup is as follows: WAN connected to Router (MikroTIK ...
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0answers
53 views

Connecting a switch to a VDSL2 model causes upload speeds to go to 0

My network configuration has my main router connected to a secondary router which is in bridge mode, and I have a computer connected via ethernet to that secondary router. If the connection between ...
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0answers
39 views

Clear interface config using macro and range in cisco

I want to write macro which than i will apply to interface range and clear to default interface configuration in that range. Is it possible?
1
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1answer
138 views

Managed Switch Stability

Our office has been experiencing a series of rolling internet outages over the last couple of weeks which is driving everyone crazy. After isolating a few individual components, my current theory is ...
0
votes
1answer
105 views

Forcing traffic through an IPS on a flat network through a bump in the wire

I have the following topology: Click here, unfortunently I don't have enough rep to post images Essentially I would like the packet flow to go from PC1, to the Core Switch, to the Edge Switch, and ...
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votes
3answers
57 views

Ports from switch to system

I have rcently joined a company and we want to migrate our network to 10.0.0.0 ip address range from 192.168.0.0. Also we want to configure few vlan's But the major challange i am facing is that ...
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0answers
49 views

burnt Switches connected directly to the internet

We got a setup with a switch between the cable modem/bridge and the two router ports. We burn this switch every 6 months, and it has to be replaced. Symptoms are heavy packet loss or in general very ...
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votes
2answers
101 views

Can I connect many switches to a switch? [closed]

I am trying to make a campus network.I haven't any experience. In campus,there are center building and many buildings.I use many switches(for pc,phone,sec-cameras) in a building.And I want to connect ...
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votes
1answer
78 views

Why is there flooding on L2 but not on L3?

Why is it, that on L2 (when there is no MAC Table entry for a new packet) there is MAC Flooding. But at the same time on L3 there is an ARP request (when there is no entry in the ARP table for a new ...
1
vote
1answer
212 views

What are the different Status options for Dell show copper-ports command?

When the below command is issued in a Dell N2024P/N3024F switch show copper-ports tdr The following output is generated Port Result Length Date Gi1/0/1 OK 0 - 10 Jan 1 00:00:...
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votes
2answers
310 views

Avaya 4850 GTS & VSP 7000 - setting up a fibre trunk, no MLT

I'm a junior network/sys admin, and I'm stuck (and my seniors aren't sure what to do). I have a VSP 7000 switch which is a core switch. And a 4850 GTS switch which is like access switch. The switches ...
4
votes
2answers
2k views

What is the proper way to connect cables from a patch panel to a switch when you have more ports on the patch panel than on the switch?

We're in a situation at our new building where we have 58 drops but only 48 ports on our switch. Roughly 40 of our drops will be in use, but it's a random selection ranging from 1 to 58. Typically I ...
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votes
1answer
37 views

What happens when a switch goes offline? and can they be easily exploited through open wifi?

I have two simple questions regarding switches: When a router/ proxy server/ dns host fails, they tend to not allow any packets through. Is this the same with a switch? A switch is connected to 3 ...
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1answer
259 views

How can I tell if a cisco router is dropping pings due to DOS suspicion or if it's experiencing packet loss?

We use a PRTG server that's connected to a cisco 6500, which feeds a large network of about 1200 switches and radios in a router-on-a-stick topology. In PRTG I'm able to set a 'ping burst' sensor on a ...
0
votes
1answer
54 views

Getting L2 switch info from the data port on a Cisco IP phone?

Here's what I'm trying to do: I'm trying to get the information on which switch/port that a jack wired to. On that jack, there is a Cisco IP phone (7942), and a computer plugged into its data port. ...
0
votes
1answer
2k views

How to use two different ISP on same LAN with one Ethernet switch?

Sorry if same question is asked on Stackoverflow. I searched and tried some configuration but are not working in my case. I have a LAN with 6 machines which are on same network (each other can be ...
1
vote
1answer
132 views

Setting up a small network with a redundant WAN setup

Asked on the network stack but referred here, partly because lower grade equipment. Small office and we are trying to piece together a network with our two wans (diff ISPs) a switch and a few ...
1
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0answers
174 views

Why would command line parameters not be recognized?

I have a small console application written in C# for .NET 4.0. The application takes 2 parameters, either "-run" or "-clr". So it would be called via command line like this MyConsoleApp.exe -run I'...