Networking Hardware-Other





Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

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Our campus has some Cat6 structured cabling terminating at a patch panel (T-568B).

Whenever I crimp the end with a RJ45 connector,  also using code T-568B, I get shorts between all the twisted pairs on every cable!

1 & 2
3 & 6
4 & 5
7 & 8

What am I missing? Does Cat6 cable need a special RJ45 crimp?

Any guidance would be hugely appreciated.
Exploring SQL Server 2016: Fundamentals
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Exploring SQL Server 2016: Fundamentals

Learn the fundamentals of Microsoft SQL Server, a relational database management system that stores and retrieves data when requested by other software applications.

Several clients have expressed an interest in getting a blocking service to prevent junk phone calls from being received on their land lines.

Is there a filtering service that can work with VOIP provided by  Xfinity, FIOS, Optimum Online, and other providers?
Is there one for those using copper wiring?

I have been using RoboKiller on my iPhone, and I've been happy with that service.
Something like that for land lines would be great.

When purchasing a cable modem, I know that the Number 1 X Number 2 (i.e. 16x4) is the downstream and upstream channels that it is capable of handling.

However, is it possible to correlate those numbers to the speed package that we are receiving?  I don't want to over or under buy a device for the current tier we are on, which is 200/20.

Also, what are the opinions on DOCSIS 3.0 vs. DOCSIS 3.1?  Do we really need 3.1 to future proof ourselves?
On a Cisco 6509 w Sup 720 - is there a way to tell if the 10Gbps fiber transceivers are multimode or single?
Or find out other attributes? The commands I'm running keep showing me unhelpful info like:

#show interface TEn 5/4 transceiver module 5  
Transceiver monitoring is disabled for all interfaces.

ITU Channel not available (Wavelength not available),
Transceiver is internally calibrated.
If device is externally calibrated, only calibrated values are printed.
++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
NA or N/A: not applicable, Tx: transmit, Rx: receive.
mA: milliamperes, dBm: decibels (milliwatts).

                                         Optical   Optical
            Temperature  Voltage  Current   Tx Power  Rx Power
Port        (Celsius)    (Volts)  (mA)      (dBm)     (dBm)
----------  -----------  -------  --------  --------  --------
Te5/4         34.0        N/A       5.7 --   -2.9      -3.7

We have a Ring Video Doorbell 2 which we purchased recently.

Our router that provides WiFi connection is an Eircom F1000 modem.

The plan was to connect the doorbell to our router's WiFi and connect it with our mobile devices.

This worked fine and there was no problem with internet connectivity for the doorbell.

We then went to install this doorbell at the door of our office but found that the doorbell experienced WiFi connectivity problems when we went to do so.

The area seems to have weaker WiFi as it is further away from our router.

What would you recommend we do to resolve this?

We have an HP 2530-24G-PoE+ (J9773A) where our port 11 keeps going on-line and then off-line. The device that we have connected to it is a wireless AP that uses POE. When I go into the logs of the switch all it says is that Port 11 is now on-line and then the next line is that it has gone offline. With no other information. What can I do to find out what's wrong with that port? I'm still very new to programming on a switch.
Hi guys, I have bought some mellanox gear pretty cheap off Ebay. I need to set some time aside to properly read through everything and learn what i am doing. But i am just trying to get it online to do some basic testing and even that seems to be a bit of a pita.

My setup is blade M1000e with 2x M4001T switches both showing as online. I then have 40Gb NICs in two R730 servers. Both these connections are showing as disconnected. (if they connect direct without the switch they work perfectly)

I purchased a 56Gb/s card for a blade server and installed that. I then installed OpenSM / mellanox software and i created the mellanox service. I then started the service and the first port came online. I assigned it a static Ip address but none of the other ports came online.

The documentation for this specific switch is eluding me. If anyone has some information on what i need to do for the config it would be appreciated!

I have ordered a serial cable to plug in to the device but from what i read, i was led to believe i wouldnt need one as i can use opensm to configure the switches and bring them online.
How to setup A Windows Radius Server with the Network Policy Server Role Enabled to allow for MAC address caching for authentication?

We are running Network Policy Serve on Windows 2012 R2.

Currently we are using an older wireless system for Guest Access (HP MSM) and I am trying to configure a new Aruba Wireless system to work just as our old system.  I do have everything working well except for 1 specific Guest portal.  And the problem is specifically as follows:

 - Current system we have 2 guest access portals where a user would get access to:
   1.  Guest WiFi Access (private IP from the wireless Controller) while logging in from a local user account (from that wireless controller.
   2.  Guest WiFi Access for BYOD devices (cell phones and other personal devices (laptops) that are not connected to our corp. network.

The Problem is that the BYOD is for employees only and the employees need to logon through a portal where they enter a username/password.  This portal is authenticated through a RADIUS Server.  I have never setup a RADIUS server before but I got it to authenticate; but, there is a problem.  The RADIUS servers are not remembering the devices.  Currently (on the older WiFi) if a user connects to the BYOD WiFi  and leave for lunch and returns 1 hours later or leaves for the evening and returns the next day the device is remembered and auto-reconnects.  Aruba informed me that they know how to configure a RADIUS server in Linux; but not in Windows.

We have 3 devices plugged into our cable modem and have 5 public IPS assigned XXX.XXX.XXX.80-84

XXX.XXX.XXX.80 is a firewall - no open ports
XXX.XXX.XXX.81 is a router - no open ports
XXX.XXX.XXX.82 is a device with vendor access and has ports 500 and 7700 open

When we do a scan of the ports .80 and .82 come up with ports 500 and 7700 open.  If I unplug the .82 device then .80 does not show any ports open.  Also we ran an external vulnerability scan on all 3 devices.  .80 is also showing vulnerabilities from the .82 device.  when .82 is unplugged the .80 firewall tests clean.  Does anyone have any idea how or why this could happen.  Thanks

Have the following Scenario and need your advice for the best technical solution to be used.

- We have customer who is working with Oil Shale
- Mine Dimension : 3 KM x 1.8 KM x 80 Meter Depth  
- Around 15 machines working in the mine
- Machines need to be connected to the internet to send data either WIFI or GSM.
- The Customer Offices has Internet connection (Microwave)
- Distance Between Offices and Mine is around 3 - 4 KM
- One the Mine Surface - There is GSM Data Coverage (Still weak) but as the machines go down it looses connection

Our Issue we need a internet coverage for the machines, what do you recommend ?

Thank You
CompTIA Cloud+
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CompTIA Cloud+

The CompTIA Cloud+ Basic training course will teach you about cloud concepts and models, data storage, networking, and network infrastructure.


What is the replacement of Cisco Small Business High Power Gigabit Power over Ethernet Injector (SB-PWR-INJ2-UK)? I want to buy Power Gigabit Power over Ethernet Injector.

What is the best practice for restarting (After Hours or Before Hours) Juniper switches ? - Should those switches be restarted once per month - twice for the year - once a year etc ?

Juniper EX Series Ethernet Switches
I just installed a CenturyLink fiber to ethernet handoff at my office. CenturyLink included an Actiontec modem/router, but it doesn’t meet my needs (eg: VPN, etc.). Does anyone know how to program a Zyxel USG 20 to work with the ethernet handoff? Please note this service still requires a PPPoE authentication. CenturyLink engineers stated I should be able to use my firewall/router since it’s a true ethernet handoff, however, they aren’t allowed to provide guidance in programming. Zyxel support engineers weren’t much help. Thanks in advance.
I'm looking at installing 14 switches in a data closet and I wanted to know exactly how many amps will that draw at startup, to ensure I have enough power circuits.
I've looked at the technical specs found below, but I'm trying to calculate exactly how many amps each switch will draw, so I know if I need 2 or 3 circuits?

I'm planning to have (7) 2960X -48-FPD-L in a stack, and each one on a APC.  Also was trying to figure out if I need a 20amp or 30amp circuit, I'm guess if I get a 30 amp circuit,
it gives me more options for the APC to use.

Any thoughts?
I have a Cisco ASA 5512x which I use as my router with Cisco switches and AP's.  I have configured one of the interfaces for our Guest Wi-Fi which it was working.  However I recently got new AP's and switches from Ubiquity  and now that Guest Wi-Fi does not work.  I want to know if it is just a configuration issue or is there just a flat out incompatibility between the 2 vendors?


As the title states we need to implement dt-lacp for our vsphere servers, iscsi will be in use to our msa2040 san as well so jumbo frames all around.

So far this is all straight forward.

The kicker here is we also want to implement a switch pair to function as the routing for our core. we run a dual homed network with ipv4 and ipv6 routing. dt-lacp does not work with v6 so how would the links to the route pair support high availability? STP seems to be the only way? is there a more novel approach i'm missing?
I need to make sure this is proper connection for what I need:

I'm currently running a GLC-LH-SM in a 3560.

I'm wanting to switch it to a 10G connector and I believe  SFP-10G-LR is the correct SFP Module.

It's a Single Mode Fiber with an LC connector. Is that correct?
I'm looking to get on figuring out how/why our Palo Alto (PA-3020) didn't fail over from ISP to another ISP modem when the first ISP had an outage?
Internet was basically just out until the ISP that failed came back online.
Is anyone familiar with a PA-3020 as it was setup to allegedly have ISP fail over.
I can see configured ports on the interface where ISP 1 modem is connected,, and ISP 2 modem is connected.
Are there known logs I can check to see what (if anything) occurred during the known hours ISP1 went out?
I honestly don't even know where failover is configured (I think I do based on documentation but I still have my doubts)
I am looking to purchase Firewall. Anti-malware router.  It's for my small business of currently about: 30 people but will grow up to 100 units within the next 1-2 years.

The problem is we had a ransomware attack couple of days back and it's made us more aware.

The other thing to take note is: We don't have in house IT professionals, so we hire professionals from all over the world to work on our servers, they sometimes use RDP to login. or team viewer.

We use a VM ware, specifically promox, so we considering using: nakivo for back up also.

Our ISP guy recommended we used: Mikrotik RB/1100AHX2 Routerboard RouterOS Level 6 but he thinks we are small for it, and I think there's something better already.

I want to invest for the next 5years. I want to buy something that will take us to the next level, yet keep us funtional.

I don't know if we can also use it to block certain sites, manage bandwidth for users in the office, anything that'll generally keep security really up above board. Thank you.
OWASP Proactive Controls
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OWASP Proactive Controls

Learn the most important control and control categories that every architect and developer should include in their projects.

Hai Guys

We have one Dell switch S4148T and its have four 100GBE and two  40 GBe  SFP+ port.  Same like we have one dell chassis M100E.  It have two dell force10 MXL 10/40 GBE balde switch. we connect the cable from S4148T to force10 MXL blade switch and do the initial configuration. But still swicth ports are down ( both 100GBe and 40 GBe) . Any one can help me to resolve this issue. Can you share the configuration with me
Selling my networking lab equipment, but where do I sell for the most $$$ and least fee's?
How can I find the up address of the DSL modem behind a router?  
Attaching the DSL modem directly to a computer did not help:
The ipconfig showed a 169 up address.
Brocade FWS648G Vs 7.4.00 is there any on line documentation available or user groups for this switch?   Or can you recommend a current source that would work as well?

I have a TP-Link 3150 v2 wireless ac router.

Does it support access point and repeater mode?

If not, please suggest some wireless ac routers that act/support in Repeater and access point mode.

Reach out to me for any questions.

Thanks for your support.

Warm Regards,
Sriram K
Senior Technical Writer.
I have a cisco 3750G POE 24 switch, and it's not booting.  I have uploaded a new IOS via TFTP, did a reload, and now I'm at the switch: prompt
I have included a picture, I have tried a few things, but nothing I'm trying worked.  Any suggestions how I can get the switch to boot correctly?


Networking Hardware-Other





Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.