Switches / Hubs

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A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Related Topics

  1. Routers
  2. Networking
  3. Networking Hardware-Other
  4. Network Architecture
  5. Network Operations
  6. Cisco
  7. Network Analysis
  8. Network Management
  9. Hardware Firewalls
  10. Voice Over IP
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Hi, I've purchased 4 Sonicwall(Dell) Sonicpoint ACi units, connected to my Sonicwall NSA2600 firewall (WLAN port X4). Everything's working fine using PoE injectors (+ unmanaged switch) but I'm not …

38 views
Flexible connectivity for any environment
Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

I ust brought and used 3Com 4500G switch and reset to factory configuration. I'm trying to configure IP and it works, but only before next reboot. The configuration is saved and correct startup file …

416 views

Hi Guys,
I have a LAN with around 100 people connected to a Cisco Stack. The LAN has been working great for around 3 years now.
Working great meaning ping time<1ms between devices connected to the …

631 views

Dear Experts,

I know that the command line for VRRP in a cisco switch after executing conf t is "VRRP 1 <XXX.XXX.XXX.XXX>"

But what is the command line for a HP Switch 2910al to config the VRRP?

415 views

I have a nexus switch that will sit behind a firewall, but during the setup configuration I am asked to configure out of band (mgmt0) management configuration (yes/no):

What shall I type "yes" or …

1227 views

Not all that familiar Cisco switches (Background is more HP Procurve).

Here is what I'd like to do.

Currently the VMWare ESXi v6.5 Network Teaming policy is set to "Route based on IP hash" and …

521 views

Hello.

I would like to know if there exist any command for Cisco L3 Switch that shows which VLAN is assigned to which DHCP Server (DHCP Server's IP Address for every VLAN)?

Thank you for …

321 views

Dear Experts,

The nexus switch is asking me for some configuration questions and just want to know what does it mean.

Configure Copp system profile (strict/moderate/lenient/dense): ?

What to …

222 views

I have an ESXi v5.5 server (Dell r710) that has a physical NIC plugged into a HP ProCurve 2910g switch.  The switch port it's plugged into is untagged for our WAN VLAN.  The datacenter's WAN network …

2773 views

From the pic below, I'd like to have PC1 DG as FW2 and PC2 DG as FW1. Now from my understanding, this can be done with PBR recursive configured on vlan40 at sw4 and on the transit vlans between the …

932 views
Free Tool: Path Explorer
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

We have WS-C3650-48FS which comes with 4 x Gigabit Ethernet with Small Form‑Factor Pluggable (SFP). Now we upgrading our circuit from 1G to 2G. What are the options so we can have this switch to 2G …

651 views

Hello - we currently have a class C subnet on VLAN 1 over our Cisco switch stack.  We are running out of IP's, so we have added a 2nd VLAN 2 and confirmed thru Cisco support that the 2 VLANs are able …

1266 views

Hello everyone,
I'm looking for an easier way to connect to my HP ProCurve switches for monitoring and configuring via my workstation.
I know I can take a laptop and connect to each one to set a …

340 views

Running a SBS2011 and two Windows 2012 servers, Linksys router and two Cisco LAN switches
after a power outage last night for 3-4 hours. My servers came back up and most of my users (Windows 7) came …

334 views

I have both the management & production network on the same vlan. How to separate them step by step?

Also, after separating how to add one more nic to vm network? Please see attached files

880 views

Im trying to upgrade the IOS for a WS-C3560X-48 and Im trying the below commands which dont work... please suggest me the alternatives

sh ip bgp nei
sh ip eigrp int
sh ip eigrp nei
sh ip eigrp …

339 views

I am thinking that if I get a 12- or 16- port USB hub, I can connect two or three different PCs via USB to the hub, then connect out from the hub to three or four USB peripherals and each PC will be …

741 views

Hi Dearsm
I have a server with 2 port 10gbE copper, and also a cisco 2690 swith (100 Mbps) with 2 1G port uplink,

i want create a connection between 10GE copper with 1 G port of switch ,

is it …

676 views

I have a hsrp configured with tracking on both r1 and r2. r2 is the primary (see diagram). The issue that I have is when r0 gig0/1 goes down, hsrp is working as r2 will go on standby. But sw1 still …

264 views
Building an interactive eFuture classroom
Building an interactive eFuture classroom

Watch and learn how ATEN provided a total control system solution including seamless switching matrix switch, HDBaseT extenders, PDU, lighting control to build an interactive eFuture classroom.

I'm a database developer that inherited and managing an environment, we recently got disconnected from our parent company.

Anyway we got couple of ESX servers, physical servers and we're having …

284 views

Sometimes I hate these questions, because I end up giving points to all. There is no right or wrong answer to some degree.

I am moving from SBS 2008 to Windows Server 2016 Standard R2 hosting …

2588 views

Hi, One Microsoft server is connected to two Nexus7K via its fex port eth100/1/1 in Nexus7K_1 and eth100/1/2 in Nexus7K separately. These two fex ports are all up as showed by command "show interface …

546 views

Hi,

I have two spare HP ProCurve 5406zl Switches.

Do they have the capability to be stacked?

956 views

I have a traditional telephone system - PBX, analog lines, phone provider.  We have no need internally for many of the features that a full VOIP system offers - people are very happy with the phones …

23126 views

Hi,

I have difficulty understanding NICs and Switches in VMware.
At client's sites I often see more than one NIC connected to a single virtual switch.  These are then connected to one single …

9135 views
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201506-LO-Top-001

Switches / Hubs

20K

Solutions

5

Articles & Videos

17K

Contributors

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Related Topics

  1. Routers
  2. Networking
  3. Networking Hardware-Other
  4. Network Architecture
  5. Network Operations
  6. Cisco