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Switches / Hubs

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 o...

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Expert Spotlight
Network Architect and EE TA

Over 15 years' experience in enterprise network design and implementation focused on routing, switching, Wi-Fi and Cisco ISE.

Article

Port configurations on Cisco Catalyst switches

I see many questions here on Experts Exchange regarding switch port configurations and trunks. This …
Troubleshooting Solution

VLAN segmentation

97
We are a manufacturer, so we have PLCs that do much multicasting.  Sometimes a PLC message doesn't …
Troubleshooting Solution

Sometimes no DHCP reply > switch problem ?

115
Hi,

Weird problem here ... some of my machines, at times, don't immediately get an IP address …
Troubleshooting Solution

SMS Gateway Integration not working with Cisco ISE

9

We are currently deploying Guest Wireless using Cisco ISE for managing Guest Access through a

Troubleshooting Solution

Connect client computers to T1 router

102
I have a T1 line installed that runs into a Cisco 1840 router.  I have only one static IP address …
Troubleshooting Solution

cisco core switch blocking packets or not passing packets?

byDan
38

Cisco core switch 3850 not passing dhcp traffic to my firewall.


I have a cisco 3850 switch, stacked

Troubleshooting Solution

data vlan setup

94
Hi

We will be required to setup vlans on our LAN and WAN very soon..

Looking at the help file…
Troubleshooting Solution

switch vlan mismatch

byDan
91
I'm getting these errors, and I kind of understand why, but  I guess I might need some help in …
Advice Solution

Placement of Cisco ISE and WLC in Network Architecture

34
Hi Team!
 

We are currently collaborating with a third-party VAR. However I am also seeking guidance

Troubleshooting Solution

Dynamic Routing Implementation

89
Hello  Experts,
The below diagram shows  our network between Building A and Building B connected …
Troubleshooting Solution

Network Design for Guest Internet Access

88
Hello Experts

We are planning to deploy  Wireless Internet Access throughout campus. The campus …
Troubleshooting Solution

Designing Network with Cisco ASA and TMG for Internet Traffic

86
Hello Experts,

I am designing a network for a customer Please see the below diagram.



The …
Advice Solution

AD and ISE in Distributed Deployment

29

Hello,


I have upcoming distributed ISE deployment as follows and I'd like to know and understand how

Troubleshooting Solution

A new vLan on cisco 2960

81
Hi,
I have just made a new vLan 2 on my switch cisco 2960, assigned port 'interface gig 0/23', …
Troubleshooting Solution

Routing multiple vlans across multiple switches.

73
Hi
I had issues routing voice traffic across two same make/model switches, one as a core and the …
Troubleshooting Solution

VLAN

74
I have created two VLAN in my switch as follows. I am unable to communicate from VLAN20 to VLAN30. I…
Advice Solution

ISE Wired & Wireless 802.1x Authentication

20

How can we ensure both security and efficiency in the authentication methods for the following

Troubleshooting Solution

HP Pro Curve 2810 not picking up IP address from DHCP Server

75
I am migrating a Cisco 2950 switch to HP Pro Curve 2810 switch, On Cisco 2950 switch there are 2 …
Article
Flash Dir Head

Deleting the VTP Configuration From a Cisco Switch

WARNING:  If you follow the instructions here, you will wipe out your VTP and VLAN configurations.

Advice Solution

Design Consideration Cisco Catalyst 9800

15

We are having Cisco 9800-40 WLC which has 4 x 1/10G SFP+ ports out of which 2 I would use as LAG

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