Questions tagged [router]

For questions about network routers, devices that forward data packets between computer networks, commonly at the network layer (layer 3) of the OSI model.

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ECHOLIFE HG8245c not resetting nor i can access 192.168.1.0 [closed]

i have GPON router mode number EchoLie hg8245C It was working fine untill i uncheck the option ofenable SSID now neither the wifi is no nor i can access the router via lan cable i.e it is not taking ...
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Router/server loses connectivity for no reason while other devices don't [closed]

I'm running OPNsense 20.1 on normal consumer hardware to manage a company LAN. I've been doing it for about 2 years, without issues. My setup is like this: ISP provides me with a modem/router An ...
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Can't connect VM's brouser to Internet in GNS3 [closed]

I have a problem with connection Windows VM to internet in GNS3 I've configured nat and dhcp on cisco router. VM can ping 8.8.8.8, but can't "ping google.com". Dns on router is enabled, and router ...
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Connect via PoE an access point D-Link DAP-2610 using PoE out port of a Mikrotik Hex S [closed]

I have just bought an access point D-Link DAP-2610 and it does not come with a power supply so I want to power it via PoE using eth5 of my Mikrotik Hex S. When I plug in my device, RouterOS in Winbox ...
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If a Linksys router is plugged into a cable modem, vs a switch is plugged into a cable modem, is there any difference? [closed]

Say in the old days when we have a cable modem, and it only has 1 Ethernet socket, we can connect one computer to it. But we can buy a Linksys router and then able to plug that into the cable modem, ...
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16 views

Stupid router wont let me access specific websites [closed]

So I have super weird problem - my wifi router let some device to access some specific websites, while it wont do same thing for others. If I want to do so I have to restart router every 2 minutes or ...
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14 views

AES Encryption/Router Configuration [closed]

I am not sure if this is the right place to ask this question, if it is not, let me know. I was looking for the AES encryption key used on my router for my WPA2-Personal connection. I looked at the ...
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33 views

Differences between BGP(routing protocols) and vpn mpls?

I am new to networking, so bear with me, 1-I wanted to clear my query: why do we need BGP or any routing protocols if we have vpn or wan technologies like mpls ? 2-Can't we just run bgp between two ...
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13 views

Connect Ethernet Expansion Board to Router [closed]

I am somewhat unfamiliar with home networking but trying to set up my home's ethernet pre-wiring which originates from a control panel box in my garage. The control panel has a Leviton 1x6 Telephone/...
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Steam P2P, SoftEther VPN and other issues when using a router in school network [closed]

I am currently living in my university dormitory. The school provides one LAN port per person, however there is no Wi-Fi access in the dorms, so the school allows us to use a wireless router on the ...
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Which router handles DHCP in a wireless bridge setup? [closed]

I'm moving into a shared home that necessitates setting up a wireless bridge between my existing network and the router already in the home. I'm curious as to which router will handle DHCP requests. I'...
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ICMP error codes on a router [closed]

I'm trying to implement the functionality of a router in C. I have 4 hosts (h0, h1, h2, h3) each connected in it's own subnet to the interface (r-0, r-1, r-2, r-3, respectively). I want to send a ICMP ...
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15 views

Why would a router host its console on a different IP than a default gateway? Is that a best practice? [closed]

Just spent twenty minutes trying to find my router's console login page. My usual steps of trying common IPs like 192.168.1.1 and the like didn't work. I then checked my default gateway and that didn'...
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Cannot port forward traffic from public IP (WAN) to OpenVPN (remote) clients [closed]

I'm looking for some advice here or a nudge in the right direction, seeing as I've reached an apparent dead end. I have a static IP for my business (200.78.xxx.xxx) and I set up an OpenVPN Server on ...
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Switch and Router for a 500mbps connection [closed]

I have a 500mbps internet connection into my small office. We have about 10 computers. What hardware should I be using for my router and switch to that I can insure they are not the bottleneck?
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ARP-Request - Reply from the perspective of a router

Presume I have a route table with such entries: typedef struct route_table_entry { uint32_t prefix; uint32_t next_hop; uint32_t mask; int interface; } route_table_entry; I have a ...
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How can i view files in my SD card when ut says cant ioen this file, or can't watch videi [closed]

How can i view files on my SD card when it says, cannit view file, or can't watch this video
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1answer
30 views

Reccomended set up for wifi in dense apartment block?

I live in an apartment block of 87 units & one thing most people in it complain about is the poor cellular data reception. I have an idea of installing a fast wifi internet connection ...
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2answers
36 views

Why does the host machine need subnet mask? [duplicate]

The routers require subnet mask to route the packets to other routers or hosts, but why do host machines that are not routers such as computer running Ubuntu or windows need subnet mask to be ...
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1answer
25 views

Find best route in route table using sorting [closed]

I am trying to implement a forwarding algorithm by myself with ARP, ICMP and the forwarding algorithms. Given the routing table: typedef struct route_table_entry { uint32_t prefix; uint32_t ...
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28 views

Can two or more computers that are physically close together form a connection/network without a router? If they can, how do they do so?

So, I am pretty familiar with things when a router is used. To my knowledge, packets travel from Computer A to the router, then the router directs it to Computer B. Problem solved. I get confused when ...
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1answer
36 views

Connect routers in gns3

I have a topology of three routers connected with each other. The problem is that it has a different network address on two directly connected ports of router R1 and R2. So I am not able to ping R1 ...
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2answers
55 views

Routing Table Settings To Access An Internal Network Through VPN

I have a remote computer behind a VPN (which I have no control of). The IT team of the remote factory wanted me to install Palo Alto Networks' Global Protect program to access the VPN, which is ...
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Port forward no destination [closed]

Context: I'm running a home game server and my paranoid network administrator has allowed port forwarding under the sole condition that I airgap the server hardware when I'm not actively using it. Our ...
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1answer
55 views

Is WIFI like a hub, switch or router?

A wireless router; the wireless part of it, is that a layer 2 or layer 3 device? I have heard that a WiFi router is just a wired router with a built-in wireless AP, and since a wireless AP functions ...
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1answer
73 views

Connecting a 10 Gig server to a 1 Gig switch

Recently we purchased 5 servers. It has 4 10GB ports + 1 1GB Management port, as follow: 4x 10GB ports per server (2x traffic, 2x ISCSI), and (1x 1GB management port) However, we are trying to see ...
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1answer
25 views

Inducing delay in packet transmission at router level for a particular flow

I want to segregate flows at a router. I can do this by using the destination IP on the header. I also want to make sure that my router does not forward any other packet for the time being I am sure ...
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45 views

when to disable CEF on an interface

i am currently learning about CEF and i came across the command "no ip route-cache cef", which i do understand what it does, essentially, it enables Fast-switching/process switching on an interface. ...
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1answer
39 views

When is NAT Masquerading required?

I'm learning about NAT Masquerading and I'm a bit confused about when you would want to Masquerade. I've seen examples of using an interface for a VPN tunnel and how something like that on a router ...
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How does a host in one subnet know to forward the packet to the router MAC, when trying to send a packet to another subnet

I am trying to understand the ARP protocol and I could not understand the above. Consider the topology as follows: H1(1.1.1.1) - (1.1.1.0)R(2.2.2.0) - H2(2.2.2.2) My understanding is that if the ...
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Cannot create connection between two routers in same VLAN via switch

I currently have a Cisco 2960-24TT switch (switch1) and a Cisco 1841 router (router1) that form part of my core network connecting other VLANs and devices. The two ports on router1 have been ...
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2answers
28 views

Cisio interface naming rule

I'm very new to networking. I noticed in GNS3 lab environment, if I want to configure IP address for an interface of a router, I can use int f0/0 or int fastEthernet 0/0. What's the naming rule here? ...
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1answer
37 views

Why do we need machine learning for QoS classification in SDNs if we have DSCP in IP address for QoS enforcement?

DiffServ (Differentiated services) uses a 6-bit differentiated services code point (DSCP) in the 8-bit differentiated services field (DS field) in the IP header for packet classification purposes. If ...
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Building simple network configuration [duplicate]

For the below network configuration I need to propose an IP addresses, netmask and anything else obvious that I am possibly forgetting. The network is built of four Computers, Router and a Switch. I ...
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1answer
42 views

Will Main Router be overloaded in this scenario?

The Main router in my planned office network assigns IP addresses to all PCs through DHCP and also connects to the internet via GPON modem. 5 PCs and 1 server are connected to a 8 Port simple switch. ...
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2answers
51 views

MPLS : who owns the ingress & egress routers?

I'm trying to understand MPLS. It states that the routing doesn't happen at each router, and it starts with a "Label Edge Router". For example, if company X uses ATT as the provider for MPLS, then ...
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1answer
45 views

PacketTracer: Why can I not ping from one to another router?

I'm trying to ping from Router DC_GE to BE: I uploaded the Packet Tracer File (v. 7.2.1): https://www.4shared.com/file/aEsd_0Piiq/Topologie_Ausgangspunkt_MH.html CD_GE: CD_GE#show running-config ...
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1answer
67 views

Router can ping and resolve hostnames, but VLANs and switch cannot

I recently installed an Adtran Netvanta 4430 to perform some basic VLANs on a network with a little bit of inter-VLAN routing, and I'm having a few odd issues, probably attributed to my inexperience ...
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1answer
43 views

Do two computers in the same wifi LAN communicate directly without the router? [duplicate]

I have heard (forget where) that in a local wifi network created by a router, when two computers communicate with each other, they communicate directly with each other, and their communication doesn't ...
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1answer
164 views

What is meant by AF?

For example, route manual says: route {-h|--help} [] Detailed usage syntax for specified AF. What is meant by AF ? I tried to google the term but no success (found only something about an af-...
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2answers
41 views

What's the “routing-instance” in networking?

When I read this Article: there is a term routing-instance, how to understand this term?
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1answer
47 views

IP Routing and Switching Interface Speeds

I have a question that relates to routing and switches. I am looking to set up a new Firewall that will handle the routing for the network and attached to the Firewall will be a switch. Here are the ...
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2answers
32 views

After configure auto secure cannot log in (Cisco router 1941)

I have used network policy server on my Windows Server 2012 r2 to manage my accounts on router 1941 but after I used auto secure to harden my router, all my accounts cannot log in anymore, any ...
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1answer
371 views

How do CPU and RAM affect a router's performance?

I've seen a lot of circumstances when there are 50-100 users in the net cafes -- under normal gaming and web browsing activities with no heavy downloads -- causes the router to drop packets (leads to ...
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1answer
31 views

Can I connect two devices only with access point without router [closed]

I want to connect to the tplink security camera via on it's app on my tablet. Two devices have to be connected to the same network. I don't need an internet connection. In this case, do I have to use ...
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1answer
47 views

What are Cisco Devices? [closed]

I am doing CCNA online and not for a minute have I not failed to come acroos the statement 'Cisco Device' What exactly are cisco devices ? Please don't tell me 'Devices that use Cisco iOS' Can you ...
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2answers
127 views

How to differentiate if a Cisco device is a L3 switch or a Router?

I need to check all the L3 switches if they are configured with same ospf ID, As i am doing it in the Cisco prime, there are routers in the inventory too. Is there a show command where i can clearly ...
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1answer
47 views

How to check the route table on a neighboring router?

I have a router in a network, which use to show list of routes in the route table. Using the command- show ip eigrp topology I see some of the routes are removed after sometime, which were advertised ...
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1answer
43 views

Packet analyze on router does not match client and server

thank you for your time. My (virtual) network has 3 objects : a client, a server and a router between them. I'm sniffing the traffic on the 3 machine with the command tcpdump -i any -s 0 -w [path] ...
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1answer
54 views

Is 1111::/64 a valid IPv6 address?

As per the rules for shortening IPV6 address given in https://networklessons.com/ipv6/shortening-ipv6-addresses, this IPV6 address is invalid. But still this address gets accepted when configuring a ...

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