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Routers

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A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

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I have a Cisco 1811 that won't boot due to a memory issue.  It has a 64MB compactflash card in it.  Does that card have the running config?  I don't believe I have a backup of the config anywhere.
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Supports up to 4K resolution!
Supports up to 4K resolution!

The VS192 2-Port 4K DisplayPort Splitter is perfect for anyone who needs to send one source of DisplayPort high definition video to two or four DisplayPort displays. The VS192 can split and also expand DisplayPort audio/video signal on two or four DisplayPort monitors.

I have a FVS318N where I have setup multiple vlans to the best of my knowledge correctly.  The clients are receiving DHCP leases on the different subnets however they cannot communicate with each other.  I have checked the box labeled "inter-vlan routing" on each of the vlans however traffic does not seem to be properly routing. Any ideas?
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Hi guys,

I have a question about nat. Suppose host A is sending a http packet to 8.8.8.8 from its ip 10.1.1.1 with source port 45000.
The router that does the Nat sees the following
source:10.1.1.1:45000 ---- dest: 8.8.8.8:80
and it proceeds to nating the ip and lets assume that the source port chosen by the host is already taken. So router will assign another free port to the host nat.
NAT entry
source: 123.12.23.1:5555 ----dest: 8.8.8.8:80.
My question is, what happens when the response comes back and the router needs to send the packet back to the host. Will the router preserve the port number that the host choose initially i.e. 45000 and use that port along with the private ip of the host and forward the packet to the host or will the router use the same port it used for nat  or other random ones.

Kind regards
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Why cant I configure ip flow top talkers on my IOS? Is it the version the issue maybe?

Version 15.4(3)S4,
cisco ISR4321/K9

RTE(config)#ip flow?
% Unrecognized command
Stake_Place(config)#ip flow
                        ^
% Invalid input detected at '^' marker.

RTE(config)#
RTE(config)#

Open in new window

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Hi All

I'd like your help with a static route config?please see below i this right

Belfast)conft#ip route 10.203.0.0 0.0.255.255

thank you all
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Hi All,

I'd like to change the password on both the Cisco routers/switches please can someone confirm that this is the correct commands to do so???
conf t
line con 0
password xxxxx(orignal password)
line vty 0 4
password xxxxx(new password here)

Many thanks all
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Please see the diagram

I have the main router which holds the VLANS configuration (MAIN and GUEST) , two access point connected to it, and it works fine.

In the next location I don't know what I need to do in order to accomplish the following :

The Access point will show the two networks (MAIN and GUEST) , and the pc which is wired will be only on the guest network.

How do I accomplish that?
network_mark.jpg
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if I have this Ubiquiti Unifi Security Gateway ,

I don't need a router?
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My 10yr old Netgear WNR3500 seems too old and only giving up to 10Mb with our new equipment.  
Its RangeMax wireless-N Gigabit router.  Been good for us but.. for the last few years with newest devices seems compatibility issues there.

Should we stay with Netgear and get the latest model or some other good options around there?
Thanks.
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Hi Guys

I have Two Cisco Router r1,r2 both of them have the same getaway , i need to Achieve the high availability between the two so if r1 down .the r2 should be up and replace r1

see attached the network design

thanks

Simple network Diagram
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Building an interactive eFuture classroom
Building an interactive eFuture classroom

Watch and learn how ATEN provided a total control system solution including seamless switching matrix switch, HDBaseT extenders, PDU, lighting control to build an interactive eFuture classroom.

Can someone please explain the difference between port forwarding to 3389 and creating an access rule to 3389 on a linksys cisco router

Specifically:
Set a port forward to 3389 to a LAN pc 192.168.0.x
Set an Access rule from "Any" source or a defined Source to the same IP address on the LAN

What is the difference and which has priority
Pleas can you define the differences clearly
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I a private school's IT services.  They have three campuses in three different towns however all three have very similar infrastructure.  They have the same SonicWall NSA2600, Dell Enterprise Switches, and separate VLANs for Faculty, Students, Guest and Security cameras.  

The issue that I am having is when a classroom is assigned a project or task the requires the entire class to use their computers to access a single resource on the Internet.  I have a few examples with this but it doesn't seem to matter what the website is.  The first ten or so students to request the website will be able to resolve the web address and load the web page.  The remainder will end up with a connection timeout error trying to load the page.  And if those 10 or so who did load the page, if they hit refresh will get the same error as the rest.  If there is a break in the request to the page for about a minute it will load again.

They have a website hosted by GoDaddy and I have even contacted them to see if we were triggering any alarms or peaking any resources and they confirmed that we are not nor would they expect us to be with the account we have selected with them.  The error on the web browser "Connection Timeout Error"also does not coincide with  what would be witnessed had it been some kind of flood protection with them.

I have contacted SonicWall support and we have recreated the scenario at all three schools and review configurations on all three SonicWall devices to rule out …
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I am currently setting up a training room where I want everything to be automated. I have door style windows on a slanted roof that currently needs to be opened manually. The problem is that the windows are very high, and it is not practical to try and open them manually.

They are side hung escape windows with wooden frames and dimensions 660x1180mm.

I want to convert the windows so they can open automatically, preferably using a remote or voice commands using my SmartThings hub or Amazon Alexa. Would this be possible?

Would you be able to guide me to the type of window opener/actuator that would best suit my window and what else I would need to get to be able to use my SmartThings hub or IFTTT event triggering.

Any solutions would be much appreciated.

Regards,
Robbie
1
Hello,

If I want to override the current EIGRP defaul route, how can I do that? Do I just create a static and redistribute into EIGRP or is there more to it?

For ex.
Switch#sh ip route
Gateway of last resort is 10.255.254.5 to network 0.0.0.0

D*EX  0.0.0.0/0 [170/3072] via 10.255.254.5, 7w0d, Vlan101

Open in new window


and  I want to default route to be 10.255.254.10 fo example.

Thanks
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All experts, I have remote site with multiple vlans connected by site to site VPN.  there ip address range start 10.0.8.0 / 255.255.252.0 and some of department has 10.0.28.0, 10.0.29.0, 10.0.30.0 / 255.255.255.0.   How do i combine these networks and route them by simple route statement use on vpn?  I currently set to all vlan networks mapped and working but I would like to have simple statement such as following

10.0.0.0 255.255.0.0 to  10.0.28.0, 10.0.29.0, 10.0.30.0 / 255.255.255.0 and 10.0.8.0 / 255.255.252.0

I hope it makes sense. I believe supernet was how it configured it. I open to your advise Thank you!
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Devices:
Google Home,
Aruba IAP-305 (RW)
NordVPN


I am trying to set up a VPN for my Google Home so it will register as being in the US. I am currently in Ireland and have purchased a subscription to NordVPN.  From what I understand, a VPN cannot be put on the actual Google Home device.

I currently make a lot of calls to the US. Google Home offers free calls in the US but is not available here in Ireland. This is one of the main things I want to get from my Google Home.

If the net result of the VPN makes Google Home look like its in the US, I do not want the rest of my tech devices to think they are in that location, i.e all of my other tech devices have locations in Ireland.

Regards,
Robbie
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Finding for the tools which will support the device management in the IOT/M2M.
The tool capability expectation is to monitor and manage all device types including switches,routers(manly MPLS 4G Router) and gateways in telecom, Smart Home hubs, sensors and appliances M2M devices, smart power and water metering devices, health care devices and more.
Kindly let me know any such tools available in the market.
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hi folks

i am wondering if anyone ever used Cisco WRVS4400N's port mirroring feature to monitor traffic of a given port?

i have tried any individual port or even all ports together as the source, but i still cannot see any mirrored traffic from listening to the specific port (Port 4), as shown below.

Screen-Shot-2017-09-13-at-13.29.04.png
i have no idea why the device doesn't work as expected. do you have any suggestion please?

regards,
bbao
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I had a new Actiontec router installed on August 29 and since then my computer freezes every ten minutes for one minute. You can set your clock by it. After a number of hours with tech support who have no idea I have looked at a number of things. I had the installation tech back. His computer does not freeze. We patched mine through an ethernet cord -- it runs fine. It appears to have something to do with my wifi adaptor. I have a realtec 802.11 card. What I found in looking at the device board is that a series of WANmini ports installed at the same time as my router. Could they be the problem? Do I need them? Can they just be removed or do they need possibly to be replaced?
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Hi There,

I configured a VLAN for a business complex each company has his own subnet.
The Draytek is sending the different subnets through a switch.
The VLAN is working properly every company receives the right IP range.
Everything works properly i can print and i can connect to the NAS etc.
But when the NAS and printer are on a static IP the devices cannot communicate anymore.

I tried several options but I can't figure out why the systems don't communicate anymore.

Ill think it's something with sending a VLAN tag like VID.

Can someone explane how this actually works?

Kind regards,

Agrippa
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Have a environment where I want to restrict internet to all computers except of 2.
Looking for a router that instead of blocking the once I want to restrict I should be able to block all and allow the the few I want to allow (a ip range)
Not a big network no fancy router simple
it's about 25 devices all have a static ip configured on the device
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I'm trying to add routing port (fa) but it only allows me to add switching port.  When I add switching port it does not allow me to configure it with an IP.  I'm trying to add it on router 1841.  Thanks in advance.
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Google Photo's "Backup & Sync" tool is making my internet connection unusable when I'm uploading photos from my desktop.  I have another desktop & laptop, all on the same WiFi.

I do see I can limit upload and download speed.

QUESTION:

If the desktop is the only device requesting bandwidth, I presume that would get all of the bandwidth.

However, when I start using my laptop, shouldn't it share the connection and play nice?

My Comcast is normally 30 Mbps down and 5 Mbps up when I'm not uploading.

When uploading without specifying a limit, it can drop to under 1 download and 1 upload.

I just specified a limit of 400 KB/sec and download limit to 1800 KB/sec to see if that helps.

Thx
Mike
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Please explain the usage of the Multicast ip addresses below

I have seen different Multicast IP addresses used , the most common are shown below. Correct me if I am wrong

224.0.0.1 : I believe this is used by the IGMP querier to  find out if there is any receiver interested in Multicast.

224.0.1.40 : Probably this address is used by the IGMP querier for Auto-RP discovery (it is a little bit vague)

224.0.0.13 : probably this address is used by the IGMP querier when it is configured to use PIM protocol (I am not sure if it is specific to PIM version 2 or any version)

224.0.0.2 : is used by IGMP host (the Receiver) when it leaves the multicast group

224.0.0.22 this is used by IGMP Version 3 receiver, But I am not sure if it is used when the receiver leaves the Multicast Group or it uses it in different circumstances . (please clarify)



Thank you
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Hi Expert, Please see the attached screenshot. I am installing Solarwinds. but I got an error message. I do not know what SQL server name is to fill the SQL server name. I tried different name including the computer name. During the process of installation, I follow the steps to install, which include automatic SQL installation. Did I miss some step or wrong? Thank you
Capture.PNG
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Routers

47K

Solutions

30K

Contributors

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.