Switches / Hubs

20K

Solutions

4

Articles & Videos

16K

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.

Refine results

I've connected to my Vsphere host through ssh console and added a port group on a virtual switch and also assigned it a VLAN id. When I go to the web interface, what I've created is not displayed …

416 views
PRTG Network Monitor: Intuitive Network Monitoring
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Attached are config files for my test ospf network on packet tracer.   I'm trying to mimic an ASE switch  in the middle connecting all these router.  Can some please look at the switch and tell me …

626 views

If this network tool has a MAC address, will this tool when connected to a Cisco switch configured with port security and a Maximum number of
MACs set to ONE.  For example, if  I am testing the …

27 views

Hi All,

I'm asking this as a server engineer who knows how to connect to the Cisco switch using its management IP through Putty.

Can anyone please share some example steps on how to modify …

436 views

Are all of the Cisco 3750E models gig switches on all ports?

111 views

I have a 3 WS-C3650-48PS switches stacked.

(CODE)

Here is what happens when I reboot the switch2, after it comes back online, it looks like this.

(CODE)

sw2 has higher priority and it …

721 views

Hi All,

So we are trying to tag traffic on one specific Vlan (vlan 10) in our network. However when we do this, the traffic does not seem to reach another vlan (vlan 70) that has the DHCP server on…

238 views

Dear Experts,

Please advice, is there any way to support Windows NLB on Cisco Nexus 9000.

Thanks

119 views

Reason I ask.  The vmware host has all physical nics assigned to distributed virtual switch1.  In addition there is no room to add another physical nic.  We would like to use the management physical …

341 views

I'm having a problem thinking of the best way to add a new subnet to a Cisco Router or Switch.  Here's the scenario, we have a security system that has a number of camera's that only a few people on …

428 views
Master Your Team's Linux and Cloud Stack!
Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

I am just wondering what can cause a network loop even though stp is enabled?

1032 views

I'll have 2 stacks one on each floor. I will be running a layer 2 trunk etherchannel bundle between the stacks.  How do I configure the etherchannel so that both links in the bundle are utilized? Do I…

1020 views

Hi experts,

I’m looking for advice on installing an extra 48 port HP switch (the same model as the switch already in use)

The running config of sw01 is below, how do I configure the new switch …

130 views

You have a host without jumbo frame ability in its nic that is connected to a switch where jumbo frames are enabled globally. Is it able to communicate properly? Thank you.

316 views

Any Network Expert to explain the meaning of these words in Networking:
Line cards, Supervisor, Control plane

Ok Line cards, sounds like modules you insert on the switch or router. if so why they …

735 views

Let's say I have Switch1 with native Vlan 10 and Switch 2 with native Vlan 20
As far as I know Native Vlans carry untagged traffic , means the untagged traffic  will be able to make it from native …

436 views

Hey Guys,

I am new to VLAN.  In the past, I have been setting up unmanaged switch for my clients.  Going forward, I would like to setup a managed switch and separate server, workstations, …

944 views

Hello - i work for an IT support company and our client base is mainly up of companies with 5 - 50 computers.  i am looking for the easiest way to ensure we are aware of EVERY device that comes on to …

682 views

I am adding a new route-map MY-FILTER to my Cisco switch config. But I see that I already have another route-map MY-ROUTE-MAP. Both route-maps have the PERMIT 10 but they are calling different ACL. …

118 views
Live: Real-Time Solutions, Start Here
Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Hello - we had an issue recently where an ISP doing an IP phone installation may have moved the cat5 cable from one port on our Cisco SF300-48P to another port.   This was the cable that connected to …

832 views

Hello - I am planning on revamping my network. Users are complaining that the internet is slow (webpages loading slower than usual, waiting long after clicking links). I have 4 unmanaged switches, 3 …

736 views

Hi,

We are rewiring our office with cat6e.  I have a few questions,

1. do people still use patch panel? (it has been a while, I do not know if there are better technology now)

2. Is a Cat6 …

735 views

Hello,

Trying to get AAA authentication working. I am authenticating against a windows server 2012 R2. It works if I apply the following config to a

ProCurve J9087A Switch 2610-24-PWR
Software …

225 views

Hi Guys,

I've been looking after a switch for a virtual office, which is pretty basic in design and now consists of a 3650 main switch and two 2950 switches.  

It's primary role is having a …

1066 views

I have a connection between 2 sites and I am using 2 SVIs /30 to advertise my EIGRP routing. Everything works fine. Site A can see subnets from site B and vice versa. Now I have one subnet (configured…

137 views
Show more content
201506-LO-Top-001

TOP EXPERTS

view all

RELATED TOPICS view all topics

  1. Routers
    (47,069)
  2. Networking
    (89,662)
  3. Networking Hardware-Other
    (27,147)
  4. Network Architecture
    (11,832)
  5. Network Operations
    (9,307)
  6. Cisco
    (22,901)
  7. Network Analysis
    (9,055)
  8. Network Management
    (13,012)
  9. Hardware Firewalls
    (23,299)
  10. Voice Over IP
    (8,630)