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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Hi Anyone can explain two commands and its difference ? Thank you

aaa  authorization commands 5 login group tacacs+ none
aaa authorization commands 15 login group tacacs+ none
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the internet here will go out for 5 - 10 seconds several times a day.

Wondering if there's anything you can see that's a problem or just a loose connection on the pole somewhere (and how likely will they find it?).

I was using a new netgear docsis 3 modem and having this problem.
Got a Cablevision supplied motorola docsis 2 modem and put that in and problem continues
theres only the cable modem on the coax. No TVs.
Connections I can get to - both sides of the lightning arrester / grounding tap outside and the cable connection onto the modem are tight and cablevision installed connectors.
i set up to ping 1.1.1.1 -t.  It'll go on for a while with time of 10 - 15 ms.  then it'll just stop for 5 - 10 seconds.  Then start back up with 10 - 15ms.
I was getting similar error messages on the netgear router, now these messages.  I'd think any systemic / DHCP address problems would have the connection be out completely, not for 5 - 10 seconds every once in a while. But are these errors indicative of other issues?

I called cablevision and they poo pood their old surfboard modem. So I put the netgear back in the network.  Got the errors in the last picture.  And internet went out for minutes and I rebooted the modem and it came back up.

There's a picture below of the signals at the netgear and it has a 6db attenuator in it. the rep said signals are ok / better with the 6db in there than without it.  But the uncorrected errors?  the outage needing a reboot?  And the …
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when we are trying to access router/switch, after logging in successfully, sometimes it requests enable password, while other time it does not request enable password and then directly enter privilege mode. Why does it happen?
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14-router-1-confg14-router-1.txt
I need to configure some new routers (layer 3 switches: Catalyst 3560-CX). We have a few sites that already have them so I copied the config for one of them and modified it for the site the new router will be on. I have logged into the new router and done basic configuration so I can copy the modified file over using TFTP. Is there any settings I need to remove and add manually? I'm attaching a copy of the new config that I will be uploading (14-router-1) and the current config (14-router-1-confg). Any advice or input would be greatly appreciated.

Regards,
DJ
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Hello Experts,
Cisco Configuration Professional unable to start after install of Java, please suggest.
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Line password question.
Can I say line password include vty, aux and console password?

If we use the below command:
R4(config)#aaa authentication login default line

the line could be any one of the three line password if these three are different?
Thank you
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Hi company will migrate switches off managed network. the switch has aaa configuration and tacacs connection.  Before moving these switches, we are requested to change username and password. I am not sure why we need to change the username and password before the moving. If we do not change the username and password, after moving these switch off network, can we still have access the switches?
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Netgear AP's  and a linksys suddenly not working correctly. Wifi connectivity suddenly not working on 3 wireless devices, connected a brand new Nighthawk, configured as an Access Point because I have a  Fortigate firewall.
Netgear AP--> FORTIGATE--> Modem. I configured the netgear nighthawk as an AP, connected with 2 different laptops, browse the internet and was very slow, run a ping to 8.8.8.8, 4.2.2.2 and the ms vary from 20 to 2,300ms, very high latency. I connected directly to the Netgear nighthawk using a lan cable and the speed was normal 50 Mbps down and 10 Mbps up,
I tried my cell phone and connection is fine. I tried for hours different scenarios and still the same result. No clue why suddenly WIFI doesn't work as before. I created a policy on the firewall not to filter the laptops and AP's traffic but still same issue. I am running Windows 10 and 7.
Please advice
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We need to set up our test server on a completely separate network with a separate external IP address.  We have our servers at a data center. We have a range of external IP addresses available to use, for example 66.111.222.78 through 66.111.222.88.  At this time we use one router and the one IP address 66.111.222.78, then from the router to a switch, then to all machines from the switch.  

How would I use a second router to work our test server on a different IP address?

The existing chain that works on external IP 66.111.222.78 is data center port connects via Ethernet to router internet port, then the switch connects to router port 1, then all machines connect to the switch.  How would I hook a second router to access a different external IP so that our new test server won't be on the .78 IP network, but only on and only seen by the .79 network?
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I need to configure a Cisco 891.  Our provider is giving us a P2P /30 plus a /29 for our use.  In the past I have used 2 routers for this.  The outside router has the /30 on the outside and the /29 on the inside.  Then the inside router would have a default route to the inside interface of the outside router.  I would like to be able to do this with one router if possible.  I found a configuration example on Comcasts web site which I am attaching.  They are using the /29 for NAT.  This all seems good but what I don't get is since there are no IP addresses assigned from the /29 on any interfaces what do I use for a default route for clients using IP addresses in the /29 range.
Comcast-Example-Configuration.txt
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good day all,

I have an issue where my core switch with all my VLANs Sub interfaces assigned, in the logs i am getting  the below from one of my VLANs

"W 06/06/18 14:03:15 02581 ip: IPv4: Duplicate IPv4 address 10.0.0.250 is
            detected on VLAN 6 with a MAC address of XXXXXX-XXXXXX (this mac address is my core switch) (17 times in
            60 seconds)"

I have a trunk link from my core switch to the VLAN in question. I was thinking of changing it to an access port instead as it is the only VLAN i will utilize.
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I couldn’t upgrade my firmware on the Cisco rv325 router that's attached to  my Server 2016 essentials environment.  I signed on to ServerWSE and used Chrome to 192.168.16.1. I started the upgrade, and the progress bar kept spinning for 30 minutes, then went away.  But the router still had the old firmware.

I called Cisco and their Engineer said it failed because I must first turn off the windows firewall which should be done on a client computer, not the main server.

We then spent 40 minutes trying to turn ofr the firewall on my Windows 10 Pro laptop.

The problem is that the firewall settings says “for your security some settings are controlled by group policy”.

I am our small business's tech guy, but I know very little about GPO, and the Cisco Engineer knew less.  We turned off laptop's antivirus, and signed on as cpulaptop\Administrator but that did not help.

Does anybody know a simple way to temporarily turn off the firewall?  

If so please let me know.  

If there is not a simple way, perhaps someone can help me with GPO.  I already did the following research, but I am not making much progress.

Link#1: I found this article which show me how to create a domain level policy that turns off firewall for everybody. https://prajwaldesai.com/how-to-turn-off-windows-defender-using-group-policy/

But that is way overkill. I want to turn it off only for cpuLaptop.  Ideally, it would only be off when signon as cpuLaptop\Administrator.

Link#2: I then …
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What technique old modem were used. PAT or NAT? and Now a days which technique broadband routers are used?
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We are trying to locate serial number of Cisco UCS, we have access to Cisco unified communications manager, we have lost password for Cisco Enterprise License Manager ( CLI doesnt work, because passwords dont work).

Is there anyways to find out the serial number of the device through CUCM?
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Hi How to set SecureCRT default configuration.  For example, whenever I create a new connection, the font is always 12. Can we configure once to let font is always 16 whenever i create a new connection? Usually we can change the font by Options ---> Session Options ----> Appearance ----> Fond. But this can only change it for one connection.  Thank you
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We have purchased a Netgear Nighthawk X10 ad700 model R900 router and we are unable to use it.
The issue is when we configure the router, they are getting connected but then they are automatically getting reset within an hour. we are not able to configure again for the day.
Can someone help us to sort out this issue?
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Hello Experts,

We recently bought a dedicated MPLS ( 100 Mbps up/down)  circuit between our Main and Branch Office.
We are experiencing an issue with a client connecting to SQL application
When we launch our application, it sends query to the application server on SQL port. The application username and password is launched after 30 seconds.
The transaction within the application is normal.
The ping latency between client and server is 4 ms.

Does anyone have any ideas what could be causing this issue?
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HI Do we have a tool to get to know which port of switch the wall jack is connected to? The PC plug into wall jack. we do not know the wall jack is connected to which port of the switch.  It looks there are some tool for this. Anyone can tell the name of it? Thank you
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Hi Firewall is sitting in the network path. All user can access internet. All devices behind the firewall cannot ping or traceroute outside internet ip address, such as 8.8.8.8 because the firewall block ping and tracerout. Do we have a way, like ping or traceroute, to test the connection to internet? Thank you
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Hi, there's an Edgemark router connected to a Cisco small business switch.  I'm curious what's the benefit of connecting the to the G1 interface over the standard 1 - 24 switch ports.  Also, is there any down (network degrade?) side to hanging additional network devices off the typical 3 or 4 LAN ports on the router when it's a flat network?

Cisco small business switch
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We have a Technicolor Modem/wireless router combo device given by Spectrum.  When Spectrum tech first set it up I could connect to is wirelessly and I could see the public wan IP as ie. 1.2.3.4.  We plugged it into our Sonicwall device and everything is working fine.  Bridge mode is enabled and we have a dynamic public ip so I set it to DHCP.   I just want to know why  I'm getting a address of 192.168.0.5 showing on my WAN.  I was expecting to see the public ip instead like 1.2.3.4.

Wan interface
Capture2.PNG
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Would anyone know if there is an open source firmware like WRT or Tomato that will work in a Netgear FVS318N? I have a number of these and would like to use OpenVPN but am limited by the Netgear firmware among other limitations. It would be great to have the robustness of WRT or Tomato on one of these.
Any thoughts?
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So I have a block of static ip addresses, im currently using one with my peplink router and I have the rest attached to a switch so I can use them for other applications that need public IP's. From within my lan behind the peplink router I cannot get to one of the public ip's I have attached to a device that is sitting on the public ip side of things on that switch.. I can ping it from with in my lan but I cannot access it. My guess there is a port that is being blocked? 443 is the service port and https is turned on. Any tip or trick on what exectly I need to fwd in my peplink router would be greatly appreciated..
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Dear Experts, is there any simulation apps (such as EVE-NG, GNS3, packet tracer) which can represent the stacking process of Cisco switch? or HP aruba switch?
Many thanks!
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GigaVue connection. Please see the attached diagram. The orange device is GigaVue. In order to get each device message,  each device needs addition cable connected to the GigaVue. If we use vlan to connet each device via core switch(each device connected to core switch), can we also use line card inserted in core switch? The line card has GigaVue function. This way we do not need addition cable connected to Gigavue. My question is do we have this kind of line card? 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.