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 recently took over support for an office that is running an old set of Cisco Aironet routers. This office has a good amount of wireless devices - at least 15-20 laptops and computers, along with Nest thermostats, carbon dioxide sensors, and more. What seems to happen is randomly a connected computer will suddenly lose it's connection. Where normally the connection will be 192.168.1.X (Their standard subnet) a computer will randomly drop and suddenly show a 192.168.0.X address, complete with 192.168.0 gateway and no internet access. After sometime the connection will re-establish.

Now I'm 99% sure this is simply the old Wi-Fi network unable to keep up with the number of wireless devices and it's dropping and re-acquiring leases. I just wanted to confirm that anyone else has seen this before. I was planning on replacing the Wi-Fi anyway, but it seems odd. In my experience, when a computer only has limited connectivity it would show something like a 169 address, or no address at all. The fact that it's suddenly coming up with a 192.168.0 address seems oddly specific.

Thanks for any input you might have.
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Hi all,

I'm looking for a bit of help getting started with my HP 1820-24g switch .

my network plan :

sophos router eth1(lan 192.168.0.1/24) and i configured the sophos router so : new interface eth4 (192.168.2.1/24) mit VLAN ID :10 function.

i also sophos router configured dhcp scopes for 192.168.2.100- to 200

so i connected sophos eth4 lan cable  -->switch port 1


so i have the native vlan 1, and  vlan 10(port 1-10 tagged) for lan  on the router.

my problem are:
1. if i change sophos interface(eth4)  Vlan funtion to only ethernet and i connect my laptop port 7 then get my laptop IP from sophos router dhcp server.

2.if i change sophos inteface (eth4) only Vlan fuction (vlan 10),then my laptop gets no ip from sophos dhcp server.

any idea and help?
Thank you
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I have one VLAN, VLAN20 (Voice) that is not able to access the internet.

A former MSP configured this and I am not sure how this is working. The trunk port is setup as an access port for VLAN255 (Management Network) and that it.

 I will upload the running config for the ASA as well as the C3560G as well as a hand drawn diagram of the environment.

In the Layer 3 switch, the default route is 0.0.0.0 0.0.0.0 10.152.255.1

Please let me know if you need anything other than the running-configs and the diagram.
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Dear All,

I want to reset a CISCO IAD887B-K9 from previous configuration and setup the device in bridge mode in order to connect it to a Firewall.Because i do not know how to setup is someone that can help me make it work???


Regards.
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Hai frnds,
i have cisco 4321 router , there are only 2 gi etharnet ports,can i convert wan port into Lan port ?
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in my office they were using a lease line of 100mbps previous it was 30mbps,while upgrading to 100mbps,in workstations im only able to get 45 mbps only, while troubleshooting my mux end im able to get 100 mbps. then the uplink from mux is going to a cisco 4321 router form that router to my access switches (sg 300).
my question is tht is cisco 4321 router is capable of handling 100mbps?if it can how i can solve this
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Question.  Our new office prewired with CAT6a all the way.  From users stations to the patch panels.
Does it make sense to have CAT6a for the users stations as well?  Desk ports to the computers.
And from patch panels to the switches.  
What about from other devices to the switches?  WAPs, FW, routers, between switches, etc.  Go with CAT6a all the way?
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What does it mean when you call a number and the operator tells you to "switch 189-101"?
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I Need Assistance.  We exited from long term PRI Contract back in July to a small company out of NJ.  They had tons of porting issues and outages to the point that we reached out to Verizon and engaged them as backup bidder to exit the contract with them due to breach of contract.  We send the disgruntled company an exit letter and tell them we are leaving Jan 31st - they are a small company and have a melt down and are threatening disconnect on the date we provided - Jan 31st.  


Verizon sends them a Port request for the DID's and they have not responded for days.  I also send them a request for confirmation and they also do not respond.


How do you deal with a vendor that wont respond to a DID Port Request ?   is there anyway Verizon can somehow force the porting since they actually go through them anyway ??


 Any insight you can provide would be greatly appreciated!
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I had this question after viewing Cisco ASA 5505 and Microsoft DHCP superscope.

Hello everyone, i am new to this forum and i have a question similar to this one.

i have a Microsoft Sever 2008 R2 which is the DNS and DHCP . IP Scope is 10.1.1.0 - 10.1.1.255
its sonnected to a switch and then to an ASA5505 that goes outside to the internet. its all working and fine. but then the users using WIFI and cable to connect and the IP range is all but used up so i want to extend. i created a supercope in microsoft sever 2008 r2 and its range is 10.1.0.0 -10.1.0.255. also on the ASA i created an interface name inside1 and assinged it an ip of 10.1.0.1 /24

how can i get this to work using the ASA?

Thanks
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I need to  allow the following ip ranges through the draytek router/firewall to allow Worldpay to scan our network to ensure it meets PCI compliance.

91.209.196.32/28
178.255.82.64/27
199.66.200.32/28

Can someone ecplain how I would do this. I have created 3 objects matching the above subnets but Im unsure what to do next.

Thanks
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Has an old router B with guest network feature that would like to convert to an access point, whereby users can connect to the guest network from router B. Router A the main router is an Asus router and Router B is a TP link router
Followed the instructions from the below link..
Able to connect to router B normal WiFi ssid and surf web and at the same time it’s able to access internal net work resources.  when connect to the guest network, it shows no network connection.

https://www.google.com.sg/amp/s/www.cnet.com/google-amp/news/how-to-turn-an-old-wi-fi-router-into-an-access-point/

Saw another link whereby this can be achieved when router A is using the dd-wrt firmware
https://www.howtogeek.com/153827/how-to-enable-a-guest-access-point-on-your-wireless-network/

Is there ways to configure when router A is not using dd- wrt firmware and users can get connected to router B guest network?
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when running the command : show ip ospf neighbors, I can see in some configurations
Full/Drother
and in other configurations
Full/-

I would like to know the difference between  OSPF  Full/Drother and  Full / -

Thank you
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We currently have a fairly simple set up, we have ONE public Web Server IP.   Our In/Out path is ISP line to our Cisco ASA/Firewall to our Host Server.    We use Static IPs from the ISP.   Our objective is to achieve highly reliable access to our Web server.  

We are looking at solution such as DNSMadeEasy + DNS Failover.  

Would the following plan work?
1) We'll acquire a new ISP #2 service as backup for our ISP #1 service.
2) We'll acquire a new Switch. On site our location we'll plug the two lines from ISP #1 and ISP #2 into the new Switch.
3) Run a single line from this new switch into our existing CISCO ASA router, and add configuration rules to Cisco for the new source IP addresses to mirror the rules already there for NAT, port forwarding, etc.

Any recommendations would be appreciated!
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So heres the setup

I have a new open mesh POE switch I'm trying to plug into existing 2960 so that we can plug in some OM AP's to it.  I can plug in the OMS8 switch into the cisco with the cisco switchport in access mode for the vlan we want it on. I can run a IP scan and see that the switch indeed gets a DHCP lease, i can go to that ip in browser and get the admin interface (not allowed to log in ). But the switch never checks in with cloudtrax.  I have 4 other AP's on the same subnet that check in fine, so i don't think content filtering  (as suggested by their support) is the issue, though they say the switches check into different servers than APS.  So heres the setup

OMS8------>2960----->3650------->5515ASA

is there a way i can search for that mac on either the 3650 or the ASA to see if its getting filtered?
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Hi Guys

I'm looking to add in some static routes on my 2 core switches (both S4810's) which I've inherited.  I've got some existing routes which I need to mimic so I'm just looking for confirmation that I'm about to do it correctly.  Here is the entry(ies) id like to mimic on my system when I run sh ip route:-

  S    192.168.61.0/24    via 192.168.60.250, Vl 60            1/0        5w4d
  S    192.168.62.0/24    via 192.168.60.250, Vl 60            1/0        5w4d
  S    192.168.63.0/24    via 192.168.60.250, Vl 60            1/0        5w4d
  S    192.168.64.0/24    via 192.168.60.250, Vl 60            1/0        5w4d

So you can see I have multiple for a number of subnets which I need to go out of to a particular Vlan interface

I need to do the same with another subnet, lets say 192.168.1.0/24 out of the same Vlan interface

Im thinking of running the following in conf mode:-

ip route 192.168.1.0/24 vlan 60 permanent

Is this as simple as it looks?  Does this look correct to everyone?

Thanks
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Hi Guys,

We have an IP block from the ISP
Thus a couple of public IP's assigned, example:
196.31.231.80
196.31.231.81
196.31.231.82

Our NAT policies on 196.31.231.80 over X1 interface is working well.

I've been trying to setup additional NAT policies on 196.31.231.81, but experiencing a connection issue.
Which brings me to the following questions:

1.  Is it necessary to setup a Virtual Interface for 196.31.231.82 on X1?
(255.255.255.0)
Or could the NAT rules simply refer to X1?

2.  I tried setting up a Virtual Interface on X1 for 196.31.231.82, but it complains about the same subnet used,
What should the subnet for the Virtual Interface be?
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Suppose I have a WAN switch with SVI interface vlan 777 and ip address 192.168.99.97/28. If I want that specific address to advertise to the other side of the WAN connection (another interface) what ne.eds to be in the router process?

router ospf 1
router-id 192.168.99.0
no passive-interface 777
network 192.168.99.97 0.0.0.15 area 192.168.99.0
network 192.168.99.0 0.0.0.63 area 0

Should that be enough to get 192.168.99.97 advertised into ospf? Thank you.
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My sonicwall is dropping my connection from a second subnet. I understand why, as it is identifying this 96... ip address as a WAN on the LAN. However I just simply want to allow all traffic from that IP to get through. How would I go about configuring the sonicwall?

I tried disabling IP Spoof Checking from the diag.html page, but it refuses to save and only says "there were no changes made".

01/15/2018 12:07:25.640      Alert      Intrusion Prevention      IP spoof dropped      96.67.165.X, 49873, X1      209.63.225.X, 80, X1      

Thanks!
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Hi Any one can explain two terms? -- "Cisco Rolled X1" and "Cisco Straight X2"
The Straight means straight cable?  Thank you
Here is where i got the two terms:
https://opengear.zendesk.com/hc/en-us/articles/216372163
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Hi Guys,

Our SonicWALL TZ400 recently only shows the outbound and loop-back rules.
The Inbound rules are no longer displayed on the Firewall / Access Rules page.

I believe this could just a setting?  It doesn't show all the rules even after selecting "Load All" ...
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Topology is like this: N7K1 ----- N5K1 -----Opengear1(OG1). HSRP ip: 10.2.0.1 in N7K1, which is connected(through N5K1) to OG1, 10.2.0.11. N5K1 is layer2 there. N7K1 can ping OG1 with 97% successful rate. What can cause ping loss?  We also have N7K2---- N5K2 -----OG2. but it can work well without any issue. Thank you
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Hi We can access the device Opengear by https, but cannot ping it. ACL might be a reason. In addition to ACL, any thing else can cause the issue? Thank you
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It it possible to change the TTL value on packets leaving the NetGear Router?
Model Nighthawk X6 R8000
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My folks have a cabin that has a modem/router in the front room. We do not get a very good signal in the back room due to distance.

I'm looking for a good recommendation for a simple range extender that can be plugged into a wall.

Thanks!
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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.