Networking Hardware-Other Help

Question by

Tiras25

2019-02-27Solved

New fiber cables colors

Just met with carrier tech. He left me bunch of blue sc-lc fiber cables.
Mentioned blue is a new yellow and aqua is a new orange. Better throughput and better flex.
is there a specs somewhere to learn about these new cables?

2 Comments

Build an E-Commerce Site with Angular 5

LVL 13

Learn how to build an E-Commerce site with Angular 5, a JavaScript framework used by developers to build web, desktop, and mobile applications.

Hi Experts

Could you point the alternatives to assemble a LAN using Windows Server and clients?

Coaxial cables, optical fiber are options?

If so what is needed to implement it?

Thanks in advance.

23 Comments

Dear Experts! I stepped into a video surveillance camera deployment. The issue is we are using Zone Minder, an open source IP Video capture software, and we have been having issues with. I need to look at NVR (Network Video Recorder) alternatives. Anyone have any recommendations? I need to make sure it's a solid platform, we can set up a support contact, easily to export footage, motion detection, pre-event recording and allow for use of 3rd party IP cameras. We have 4 sites, 14 cameras at two, 47 at our main campus and 28 at our second campus.

4 Comments

I am setting up our infrastructure to enable remote phones on a new phone system we installed. The phone vendor requirements were fairly simple, port forward UDP 443 to a device on our DMZ(the virtual machine). Easy, or so I thought.

Everything looks good from the Firewall end. If I plug in the phone, I can see the traffic hit the firewall, and be forwarded to the device lets say is 11.11.11.11. No issues I can see from the firewall end. It's a Barracuda NG F280, I have gone over it over and over with Barracuda support and they see nothing from their end.

The issue is that traffic never hits 11.11.11.11. I have set up a monitoring VM on my DMZ with wireshark, never see the traffic. The VM has a packet monitor built in so I can create packet captures on the interface directly, never see the traffic. If I run a netcat cmd for UDP 443, I see nothing. I see other traffic. If I ping 11.11.11.11 from anywhere else on the network, I see it. There is nothing between this device and the Firewall, except the VMWare hypervisor.

I am at a loss at this point. My Firewall vendor says it isn't on their end, my phone vendor says it isn't on theirs. I believe that to be the truth, but I don't know what else it could be. Does anyone have any ideas? Only thing I can think of is something in VMWare, but I have never seen VMWare block traffic like that before.

Some more info:

Seems localized in some way to port number. If I change my forwarding rule to port 3300 instead…

9 Comments

I am a network admin and looking at our switching infrastructure. I feel like it is not efficiently built, and it is aging. It consists of HP Procurve switches, some of them are V1910's, newer ones are 2530's. (Several were purchased to support a VoIP phone system). All switches are connected with trunks- this takes up 4 ports per trunk and only communicates at linespeed. What I think needs to happen is I need to build a new core switch infrastructure, remove the aging equipment, relegate the newer switches to edge roles for client connections, and select adequate infrastructure for the core equipment... whatever I get, I am planning to use cascades so we don't end up using half the ports to trunk and get better performance. Our network is not complex- we have an MPLS, an inter-building fiber link, 2 VoIP VLANs, and 3 subnets at this location. so we wouldn't need more than 8 VLAN's- right now everything except the fiber and the phones are on the same VLAN and separated by routers- I think that using the VLAN capabilities of the new infrastructure could replace routing equipment and optimize the network further. So my question is, assuming we are keeping the newer HP Procurves (The newest are actually Aruba's), which have GBIC's but no cascade ports, should we use Cisco's for the core switches, or stay brand-consistent with HPe/Aruba, which will become the edge switches? Any model or feature recommendations?
Thanks for the help!

7 Comments

primary Domain Controller for this domain could not be located.
I am not able to connect through Remote desktop for one of my remote DC. but on the same remote network I can connect file server through remote desktop.

second scenario.

on same remote network I can connect remote DC.
PDC.JPG
remote-desktop-error.JPG

10 Comments

LVL 3

Question by

Ryan

2019-02-13Solved

Network hard drive unacessable

Please see here first:

https://www.experts-exchange.com/questions/29135229/Smart-TV-to-router-and-internet.html?headerLink=workspace_open_questions

Now that I have set up a share the drive is showing up with a red X and I cannot access it.

Please help.

This is the error I am getting:
error.jpg

4 Comments

I'm looking for a cisco 40 or 48 port, 10GB copper switch, with fiber uplinks? I would prefer IOS.

Any recommendations?

14 Comments

This server will host 200 network cables and many servers.
Our plan is to setup one two-post rack and two four-post racks (or cabinets). And here are the questions

1. Should we install all the patch panels AND the network switches on the two-post rack? Or, install only the patch panels on the two-post rack, install the switches on the four-post racks (or cabinets) along with the servers?

2. Should we use four-post racks or cabinets?
I understand cabinets offer one more layer of security. Is there any other benefit to use cabinets?

3. Should we install the two-post rack in the middle of the two four-post racks (or cabinets)? Or, this doesn't matter?

4. Any other thoughts or suggestions??

Thanks!

4 Comments

Hi,

Please, I am not an expert and I need help. I am planning to buy core switch and I have questions. Can Cisco C6807-XL be stacked? Do I need to buy stack power and data cable only? or I have to buy modular to achieve stack? if yes what modular I need to buy?

These are the specifications that I have for the core switch

C6807-XL      Catalyst 6807-XL 7-slot chassis, 10RU
CON-SNT-C6807XLC      SNTC-8X5XNBD Catalyst 6807-XL 7-s
C6800-OTHER      Catalyst 6800 Other PIN; For Tracking Only
C6807-XL-FAN      Catalyst 6807-XL Chassis Fan Tray
C6800-XL-CVR      Catalyst 6807-XL line card slot cover
C6800-PS-CVR      Catalyst 6800 power supply blank cover
C6800-DNA-OPTOUT      DNA SUBSCRIPTION OPTOUT
VS-S2T-10G      Cat 6500 Sup 2T with 2 x 10GbE and 3 x 1GbE with MSFC5 PFC4
VS-F6K-PFC4      Cat 6k 80G Sys Daughter Board Sup2T PFC4
MEM-C6K-INTFL1GB      Internal 1G Compact Flash
MEM-SUP2T-2GB      Catalyst 6500 2GB memory for Sup2T and Sup2TXL
VS-SUP2T-10G      Catalyst 6500 Supervisor Engine 2T Baseboard
S2TAIK9N-15501SY      Cisco CAT6000-VS-S2T IOS ADVANCED IP SERVICES NPE
C6800-48P-TX-XL      C6k 48-port 10/100/1000 GE Mod: fabric enabled, RJ-45 DFC4XL
C6800-48P-TX-XL      C6k 48-port 10/100/1000 GE Mod: fabric enabled, RJ-45 DFC4XL
C6800-48P-SFP-XL      C6k 48-port 1GE Mod:fabric-enabled with DFC4XL
GLC-SX-MMD      1000BASE-SX SFP transceiver module, MMF, 850nm, DOM
C6800-48P-SFP-XL      C6k 48-port 1GE Mod:fabric-enabled with DFC4XL
VS-S2T-10G      Cat 6500 Sup 2T with 2 x 10GbE and 3 x 1GbE with MSFC5 PFC4
VS-F6K-PFC4      Cat 6k 80G Sys …

7 Comments

Expert Spotlight: Joe Anderson (DatabaseMX)

LVL 13

We’ve posted a new Expert Spotlight! Joe Anderson (DatabaseMX) has been on Experts Exchange since 2006. Learn more about this database architect, guitar aficionado, and Microsoft MVP.

Hello Experts,
I have a computer named "Toshi-A" (Win 7)
its local IP: 192.168.0.14
all its drives are shared with "everyone" "full privileges"

when I try to access from other computers (WIN10)
using
\\Toshi-A\c ----- I get 0X80070035 Path not found

But when I use
\\192.168.0.14\c
Works just fine.

What do I do to fix this?

Regards,

34 Comments

I am comparing the cisco ISR 4331 and RV 345 model and come up with a question:

ISR 4331 cost more than $1000:

https://www.cdw.com/product/cisco-isr-4331-rack-mountable-router/3518189

but only come with very limited Performance:
Aggregate throughput: 100 Mbps

with extra unknown cost for upgrading from base package to performance package, it can reach 300Mbps.

RV 345 cost about $300,

https://www.cdw.com/product/cisco-small-business-rv345-router-rack-mountable/4557214

but come with an excellent Performance:

Firewall throughput (TCP) 900 Mbps
VPN throughput (IPSec) 650 Mbps
VPN throughput (PPTP) 100 Mbps

It would be no-brainer that everyone should buy RV 345 instead of ISR 4331? then who is going to buy ISR 4331 instead of RV345?

17 Comments

I have an Cisco ASA 5516X Firewall, the serial number of the chassis is different than the one extracted from the "show version" command.
Does anyone know which one to use for creating and assigning to a smartnet account?

3 Comments

LVL 4

Question by

Abraham Deutsch

2019-01-10Solved

Help comparing 2 routers

I am looking to upgrade my router to a router that can handle a higher volume and faster, but the number is confusing me a little.

I currently have a Ubiquiti ER-X and looking at the ERPoe‑5, I compared all the specs [RAM, Storage size, 1518 byte packets] and the ERPoe‑5 is higher or same, except for 64 bytes packets which the EX-R the throughput and pps, same is with the CPU frequency on theses 2 the EX-R is higher [EX-R throughput 957 Mbps pps 1,400,000 and the ERPoe‑5 throughput 490 Mbps pps 730,000, CPU frequency ER-X 880 MHz ERPoe‑5 500 MHz both CPU core count 2]

Please help.

9 Comments

LVL 2

Question by

beatified

2019-01-08Solved

Management VLAN for Ubiquiti

I need to separate a bunch of stuff into VLAN's for my ubiquiti based network which I am aware of how to do. But just need to know if the correct way of doing this is to put all networking hardware on its on VLAN.

I only have Ubiquiti gear and they are a USG, Unifi Switches and AP's

5 Comments

LVL 57

Question by

Scott Fell, EE MVE

2019-01-03Solved

Blocking A Port At The Router Is Not Working As Expected

I have a Netgear Nighthawk Router and I am trying to block a specific port, 42443. The issue is the port still shows open after I blocked it at the router.

Clicked on Advanced tab
Then Security tab -> Blocked Services
Used below settings and rebooted router:
- Protocol: TCP/UDP
- Starting Port: 42443
- Ending Port: 42443

The port is still open. I can go to https://xxx:xxx:x:xxx:42443 and get to a page, 404 not found. When I surf to http the browser reports ERR_EMPTY_RESPONSE. When I go to http://www.canyouseeme.org/ and add my ip and the port, it shows it is open.

I have a comcast router that is in bridge mode that connects to a Netgear Nighthawk r7000 router where I added the block. There is a Cisco SG 300-28P 28-Port Gigabit PoE Managed Switch attached to the router but from what I can see, it is basically being used as an unmanaged switch. Attached to the switch are VOIP phones, ubiquiti AP's, computers and multi function devices.

How can I detect what on the network is using port 42443? Am I missing something in trying to block that port on the router?

4 Comments

LVL 50

Question by

dbrunton

2018-12-30Solved

Cisco 2950 vs 3Com SuperStack 3

First Question.

Ages ago I had two switches given to me: a Cisco 2950 and a 3Com SuperStack 3 3C16592B. And they've been sitting tossed aside for a long time. I'm now in the process of decluttering and one has to go. Which one and why?

Second Question

Now I'm a total noobie when it comes to these switches. If I remove all passwords and take these machines back to factory or default they can be used as dumb switches, that is, I can plug anything into them and they'll function perfectly normally, getting their IP addresses from my home router? I've just started playing with the Cisco and examining how it has been configured (shudder VLANs everywhere etc etc etc) so I'd like something simple to start off with before I venture into unknown areas.

5 Comments

LVL 17

Question by

Tiras25

2018-12-26SolvedPrivate

Fiber cable connectivity

My contractor ran fiber cables between floors. Today I noticed there's an interesting transition connection from thicker cable to the thinner one. Taped over with while electrical tape.
I didn't have that fiber patch panel. They install it all. Taped like that on both end of terminations.

Does anyone know if this is how its done normally and should I worry about it? Thanks.
20181226_121026.jpg
20181226_121022.jpg

12 Comments

Should I worry about humidity in server room?
The server room is in the design stage. It may have 2 open racks and 3 cabinets which mount servers, UPS, etc.
The temperature will be well controlled by A/C system, which does not offer humidity control. Is this a big deal? I usually don't pay much attention to humidity in the past.

7 Comments

Learn Ruby Fundamentals

LVL 13

This course will introduce you to Ruby, as well as teach you about classes, methods, variables, data structures, loops, enumerable methods, and finishing touches.

Hello, I got Cisco SF-220 48ports = 2 in the same rack, the first SF-220 48 ports connect to the second 48 ports via GE1 port.
the second 48 ports connect to another remote location via SFP MGBSX1 for both 2 ports.

my question is can the SF-220 48 ports GE1 and GE2 can use at the same time with both SFP MGBSX1?
since my current situation the SFP won't work if the GE1 or GE2 are in used.

thanks

3 Comments

LVL 1

Question by

Y Y

2018-12-17Solved

CAT6A or CAT6

CAT6A or CAT6?

The client is building a 100K square feet new manufacturing facility that potentially may have 500+ network cable runs - data, voice, WiFi APs, security cameras, etc. This new facility will be ready to occupy in less than a year.
The cost of deploying CAT6A can be 2.5x or 3x more expensive than CAT6, which is about $20K~30K more.
Does the cost justify the future proof of 10GB?
If you were me, will you propose CAT6A or CAT6? And importantly, the reasoning to convince the client?

Thanks!

PS - all the network devices (Servers, PCs, network switches, etc) that will be moved to the new facility will be 1GB

12 Comments

LVL 7

Question by

gudii9

2018-12-16Solved

java upgrade

java upgrade popup keep coming many times a day with annoying sound on windows 10 laptop

how to avoid this update forever?
please advise
javaUpdate.png

6 Comments

LVL 18

Question by

WORKS2011

2018-12-14Solved

Network VOIP Testing

Is there software that tests noise on CAT5e and CAT6 cabling? I hired a company to test the cables and they said everything is above 1G and for the most part I believe them as I witnessed them test drops and make repairs on several damaged jacks. My concern is they didn't include a report with their invoice. Extremely disappointed as I mentioned the report was imperative for us to decide if VOIP is an option for my client.

I've insisted they put a report together and I'm aware the Fluke they used provides the one needed. While waiting on the report, and my suspicion is they forgot to turn reporting on, is there any software available that can give an indication of noise or how well VOIP will work on my clients network. Everything tested above 1G but there are still concerns I would like to eliminate. One being noise.

I've tried Solorwinds and wasn't impressed. Any other options available?

25 Comments

Allow multiple users to login and use the same application at the same time.

5 Comments

We have a device that we cannot connect to our network.

This device was connected to a Linksys hub through a patch panel to Device#1. It has a 192.168.3.0/24 assignment on this specific device#1.

For testing purposes we tried using an ethernet switch to connect Device #1 to the network and we discovered that when we connect Device#1 to a switch ethernet port and amber light comes up for that switch port connection. If we connect a different device (Device#2) to that same switch port we have a green light and communication works. Hence, the connection from the switch port to the patch panel and then to the end device is a good connection.

It was suggested that either:

- Duplex-mismatch (perhaps Device#1 is forced to full duplex) since it was originally setup to connect through a hub and that did not work.
- Something else is wrong with Device#1

Since we do not have administrative access to this specific switch or to Device#1, it was suggested that we use a crossover cable to connect the devices from the switch or the Hub to Device#1 to see if that will all network communication.

Can someone explain to me how a cross-over cable may fix a duplex mismatch problem? I have only used a cross-over cable to connect 2 PC's together; but, I have limited experience with crossover cables.

12 Comments

Networking Hardware-Other

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