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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A few years back I had SolarWinds Real-Time NetFlow Analyzer working with my Cisco 3750x switch. Recently we had some suspicious traffic so I installed a new version of the software on a Win 10 machine. I can connect through the software to my switch, I can see all of the interfaces but none of them show NetFlow enabled. When I click on the interface I want to monitor then click "Start Flow Capture" I get a 'NetFlow is not detected on the selected interface'.

How do I get this port configured correctly to capture NetFlow data?

Additional Facts:
IOS version 15.0(2)SE6

Config on switch:
int gig <port to be monitored>
ip flow ingress
ip flow egress

ip flow-export source <port to be monitored>
ip flow-export version 5
ip flow-export destination <IP of my Win 10 machine> 2055

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Per this thread- 
I tried to run the ip nbar protocol-discovery and the ip route-cache flow on the port to be monitored. Neither of those commands were accepted on that port.

Any help is appreciated.

I've had users on other forums attempt to help me by pointing me to towards flexible netflow configurations that use the command ip flow monitor <name of monitor> input applied to the interface they want to monitor. My switch does not allow flexible netflow to be applied to non-service module ports. What I'm trying to monitor are the standard gigabit interfaces.

The netflow commands I can apply to those standard interfaces are those listed above: ip flow ingress and ip flow egress. How do I get netflow analysis that way?
Hello People,

This is kinda engineering question. Its about the hardware and power knowledge.

I have a Ubiquiti Loco M5 which is connected to a public access point (No encryption required)
Everything is working, except random disconnection which I'm pretty sure its because of the range. Its connected with -80
I am 1 Km away from the AP - but the signal is poor because Loco doesnt have enough power!!

How can I boost the receiving on Loco M5. I mean HARDWARE. not configuration within the Loco which I tried EVERYTHING.

I need something to add to the device in order to make it more powerful for receiving signal! like changing the adaptor? or PoE? I've heard if I changed the power supply, it'll help. But I have no idea about the power and what should I buy.

Any ideas?

New to extreme switches.  I have a 48 port switch. And 5 VLANS.  Do I need to add all ports to VLANS as tagged and untaggred
I hope I can get some inputs from you on network design.
This electronics manufacturing company will be building a 2 storey, 100K square foot facility.
The mail floor - all the manufacturing machines, computers and servers running manufacturing software
The 2nd floor - the main server (Microsoft SBS), SharePoint Server, LOB software servers, and computers used by office staff and engineers.  

They have less than 200 employees, over 120 computers, 5 physical servers, some VoIP phones. They are all on the same network. Currently, there are only 28 IP free addresses available from the DHCP server (Microsoft SBS)

Here are my thoughts about the network in the new building
1. Install stackable switches in each floor's server room. Connect the two groups of switches via a long high speed trunk cable running thru the floor.
I think this will keep the network traffic on the main floor in the main floor network from the 2nd floor network, which optimize the bandwidth.
Currently, they are using D-Link DGS-1510-52 switches, which have been quite reliable, except that i had to power cycle one of them twice in the past years, and their firmware are a bit buggy.

Is it worth to deploy Cisco switches which are more expensive and cause a learning curve? Is there such a long high speed trunk cable at all?

2. Separate computer network, VoIP phone network and Security/Access Control network with 3 different networks.
This will release quite some IP addresses from the DHCP …
Dear Experts, I got this problem with my Cisco router when issue command "show ip flow top talker". What is a Null interface here?

Many thanks!
Have a Cisco router that you forgot the password or maybe you bought a used router that is locked with a password? This article will guide you through the steps on how to recover the password on your Cisco gear.
EE Pros,

I have networking issues.  I messaged with Linksys and they had a technitian contact me.  The guy was super helpful in locating the error logs that showed I had networking errors back from November of last year that had simply compounded as I had added devices to my Linksys router.  Then he offered to restore / rebuild my network for $120.  I'm skeptical of a support call that turns into a cost/expense to fix problems and am most likely headed to Best Buy's Geek Squad instead.  In the meantime, is there anything like CCCLEANER for general repair and administration of a personal PC home network?

Thank you for your comments in advance.
I have an old Dell PowerEdge 2800 domain controller sitting in my office that is collecting dust.  I was thinking about converting it into a server that we can use to backup the hard drives of the individual workstations in my office.  It has a boatload of hard drive space in a hardware RAID array, which I believe is large enough to hold the workstations.  There are 9 workstations that would need to attach to the server.  Right now, it has MS Server 2003 installed on it, but not much else.   Our workstations are a mix of Windows 7, Windows 10, and I think we have one Windows 8 laptop.  On a suggestion from a guy who does some IT for us now and then, I was thinking about reformatting the server with Linux to do this job, but I don't know if that is the best way to go about it because I haven't used Linux since college.  

My question is this:  Is there a software solution available that will allow us to automatically backup our workstations to an old server that is relatively simple to install and maintain?  We have a small business and don't have dedicated IT staff, so I will probably have to do this myself and I don't want to have to learn something really complicated.
 We don't need the domain server anymore and I am willing to install a different operating system if necessary.  Thanks for any suggestions.  If the suggestion is to go with another operating system, please let me know the build or the version.  Thanks.
I have these SFP mini-GBIC modules for LX/LH1 Part# GLC-LH-SMD
Would these work for 10Gb ISP fibre handoff?
How does DHCP work with VoIP phones?  Do they phones need to get restarted every time the DHCP lease expires?  Or it works no different than a regular computer client?
For the first time phones need to be booted to obtain IP addresses.  Also when DHCP or DNS server changes.  What about a regular DHCP refresh at the end of the lease duration?
We use Polycom ip phones over poe.
Please advice.
Hi Guys,

 I am trying to use hyper-v extended port acl's as a basic form of firewalling for vms on hyper-v server 2016

My goal is simply to limit incoming connections while generally allowing outgoing traffic (and return traffic).

In essence we are allowing incoming http(s) and dns replies. All outgoing tcp traffic is marked as stateful.

We use the following acl's (cleaned up slightly for readability)
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Deny" -Direction "Inbound" -Weight 20
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Allow" -Direction "Inbound" -Weight 30 -Protocol 1
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Allow" -Direction "Inbound" -LocalPort 80  -Protocol "TCP" -Weight 60
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Allow" -Direction "Inbound" -LocalPort 443  -Protocol "TCP" -Weight 70
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Allow" -Direction "Inbound" -RemoteIPAddress "" -RemotePort "53" -Weight 130
Add-VMNetworkAdapterExtendedAcl -VMName "web" -Action "Allow" -Direction "Outbound" -Protocol "TCP" -Stateful $True -Weight 150

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The issue is as soon as the last stateful entry is added significant latency is observed to the point of things becoming useless.

In the cisco switch acl world you would simply look for the established flag for the packet.

Is there a way we can achieve the same here without incurring these severe performance penalties? Am I doing it completely wrong?

thanks for any insight.
We have one client purchase 2 MX64 and 1 X MS250 For the beginning i design to create the vlan2,3,4 in MX and also DHCP.

My thinking is we have the 2 unit MX64 so i can configure as warm spare.if one unit MX is down so another MX will be can active and all the function will not impact to user.

But recently we receive msg from customer IT team .They would like configure VLANs in MS250 and throw the default route to MX .

May i know what are the benefit to configure DHCP and inter-vlan in switch and please advice which method is better
Polycom Soundstation 6000 not saving the Provisioning user information.  It saves the URL, but when you try to save the username and password, it "says" saved, but when you reboot or refresh the page, the credentials revert back tot the default one.  I also tried to enter it through the display (not the web UI) and same results.

I also tried to update the firmware, tried almost all of them and still same results.  Anyone have any other ideas?
We have 3 wan connections going into a bonder - Bell (200mbps) Rogers (200mbps) and Shaw (150mbps) and then from the bonder into X1 interface of the sonicwal (NSA 3500). From the bonder direct out we are getting about 320mbps (which is not great and we are working with Rogers & Shaw to improve their connections) but from the clients we are only getting a max of 95mbps up and down no matter how many tests we run. I have tried this on the X1 and X2 interface as well as change to the secondary HA unit and I get the same results.

I also plugged in my laptop directly to the Bell connection and was getting about 180 up and down. Plugged into the sonicwall X2 interface and changed my client to use that route and again I was getting a best of 95mbps.

Seems like this problem points to the sonicwall

I have a case open with them but wanted to try and resolve this sooner than later so any help/insight you have would be appreciated!

I have two Mikrotik wifi access points connected via Cat6 cabling and powered up using passif PoE injectors (cabling length: 20m and 30m)

At both ends I have Cat6 sockets ends (568B) with short Ethernet patch cables
I can't get the devices at either end to negotiate a Gigabit or Fast Ethernet connection (and yes, devices at both ends are Gigabit capable)

At the moment the best I get is 10 Mbps and that doesn't even seem to be stable: packet losses from time to time

I checked my cabling using a GREENLEE TEXTRON-NC-500 Netcat PRO 2 and all seems tip top

The cat6 F/UTP cable sections pass through the ceiling plenum, and are enclosed within convoluted sleeving from one end to the other

I have another set of cables that follow a different path, along the foot of the wall) and have no issues whatsoever (1 Gbps)

The ceiling plenum has A/C ducts, IR Infrared Motion Sensor Switches, and the lighting systems of course.  

I can only assume that something is causing interference, but this is the first time I come across such a phenomenon.

Tomorrow I will plug the APs straight into the switch to see how they react; if all is well then it will reaffirm my assumption that interference is the trouble maker here

Can anyone confirm or contradict my assumptions ?


Need confirmation
With Cat6 cabling and PoE enabled what is the best bandwidth one can obtain ?
100 Mbps full duplex right ?

I have WS-C4510R+E switch which has dual sup engine as shown below, yesterday all of sudden the uplink ports of module 6 went down and not coming up after doing multiple troubleshootings

5     8  Sup 8-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP8-E      CAT1730L5DH
 6     8  Sup 8-E 10GE (SFP+), 1000BaseX (SFP)   WS-X45-SUP8-E      CAT1909L6F7
I am trying to locate a computer that has been used in the past by my organization based on its MAC address.

So far I haven't been able to find this computer as its MAC address doesn't match any of the MAC addresses currently in use on our network.

So are there any online databases that will allow me to enter a Windows computer's MAC address and then get a description of the computer preferably listed the computer's manufacturer's name and model number?

This is definitely a Windows computer most likely a Windows 10 computer.
I have a sonicwall nsa2650 and i have an nvr with poe ports on the back that have an internal dhcp server controlling them on a 10.0.0.x subnet. I want to access those ports from my laptop when connected via global vpn client.  sonicwall has x1 and x2 as wan, x0 as lan on 10.10.30.x, and I have plugged one of the nvr ports into x3 on sonicwall.  I need help configuring sonicwall so that I can navigate to the 10.0.0.x subnet
Can a POE injector be plugged into any port on a (POE enabled) Switch?

This is the POE injector btw
Does Cisco CUBE pair need to have IP Addresses in 2 different subnets from MPLS CE Routers? We have a pair of CEs connecting to the Cisco CUBE for the voice. Please clarify.

Hello experts - I work for a small architectural firm with two offices connected via MPLS.  This gives us a very fast, low latency connection which allows us to work on Revit and CAD models between offices.  It's expensive but not excessively so, mostly because the two offices are not very far apart.  We're likely to acquire a new office in Florida (I am in PA/NJ).  I need to find a solution to network these additional offices together with a low latency connection.  I don't know if MPLS would work well across that great a distance and I don't think my current provider operates in FL.  What other options do I have?  I find that VPN users who are working from home even on fast internet connections don't have a very good experience trying to do CAD work because of the latency and I'm concerned just doing SSL or IPSEC VPNs using local FL providers won't be low enough latency to work effectively.
home network devices not finding new SonicWall SOHO Wireless.  It also is not being detected on my phone.
I have a network with a DrayTek router connecting it to the Internet.

My ISP tells me that I am sending up to 600Mb / hour up to the Intenet at times. I do not use cloud backup or storage. I am concerned that one of my PCs may have been compromised, causing this.

I have installed SmartMonitor from DrayTek, and set the router up to do port mirroring as per their instructions, mirroring all LAN ports and the WAN side too.

Looking at the SmartMonitor report, I can only see reports on downloaded data, so this isn't helping me to diagnose the large amount of uploads.

Can anyone suggest a better way to monitor this?


Hi Experts,

I have to create a new link from my fibre box to my switch.
This is single mode and the cable is an LC-E2000 cable.

I am not able to bring the link up.

I am using the switch C2960X with Singlemode transceiver. But this is not the original transceiver it is a cheaper one.
But in the config the transceiver is visible.

Gi1/0/41                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/42                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/43                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/44                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/45                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/46                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/47                     disabled     1            auto   auto 10/100/1000BaseTX
Gi1/0/48                     connected    1          a-full a-1000 10/100/1000BaseTX
Te1/0/1                      disabled     1            full    10G Not Present
Te1/0/2   "VPLS Internet Upl notconnect   1            full    10G SFP-10GBase-LR
Fa0                          disabled     routed       auto   auto 10/100BaseTX

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Do you have any ideas ?

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.