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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How to properly configure OSPF protocol?
I have this simple 3 router network that I need to configure the OSPF for, when using two routers every thing works fine and i can ping but when I add the third router nothing works
left router
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GNS3 Router Telnet Configuration
I configured the IP address and telnet for my Cisco router but on GNS3 it shows a different IP address. When I ping the router from my Ubuntu virtual machine using the IP address I configured the ping ...
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Is BGP always required when you have multiple ISPs?
I am trying to understand when is Border Gateway Protocol needed and I stumbled upon this question:
When is BGP needed?
The chosen best answer says:
You could peer with your service provider and ...
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Public IP Configuration which has a private gateway
I bought a public IP from my ISP and they provided me with the following details.
WAN IP :10.129.69.157
LAN IP : 196.188.173.32/30
How do I configure this on my side ?
The told me to do configure as ...
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Does a router need ARP to send data to router in anther netwrk, it already has the IP address of the interface right?why does it need the MAC address? [duplicate]
i am studying off this
https://www.practicalnetworking.net/series/packet-traveling/key-players/#arp
but my question is if ip address is for end to end communication , how is the end to end happening ...
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WiFi password: What is the exposure? Is it only local or can WiFi password be used remotely somehow?
(As everyone does) I have a local WiFi password that is used for signing in and using the WiFi for local users.
I have a separate & far stronger (64 char) admin password to gain access to my WiFi ...
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How to correctly setup a DHCP server in the following network?
So, I've got the following Network Configuration:
Assume that, on the graph, "PCs" can be any device that needs an IP(apart from a router).
Now, as explained on my title, I want to run a ...
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How ARP works [Specific Case]?
After reading about ARP and NAT I'm really confused about putting them to work together.
Let's suppose we have a router A with a public IP of IP(A). Plus, 2 devices behind that router B and C, each ...
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What happens if the layer 2 destination MAC address mismatches?
I was wondering, what happens if I send a packet with layer 2 destination (say 1ebf) different that what will receive it, lets say a router (mac 22ff) recieves it. Will it drop the packet? Or ...
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Is it okay to not assign an IP address to the physical interface of router when used for "Router on a Stick"?
When setting up "Router on a Stick" interVLAN routing, the steps I have seen only covered creating sub-interfaces for each VLAN and assigning an IP address to each of these sub-interfaces. ...
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Does each computer/smart phone use electromagnetic wave with different frequency to communicate when they're connected to a WLAN?
I read some papers about WLAN and Wi-Fi. They say that modern WLAN/Wi-Fi uses a kind of technology called "OFDM(Orthogonal Frequency Division Multiplexing)".
My understanding is: ODFM means ...
user85401
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Is the header of any other layer (other than the Data Link layer) is also removed and re-added when reaching a router?
Based on my understanding, when a packet reaches a router, the Data Link layer header (and trailer if there is a trailer) will be removed from the packet and a new header (and a new trailer if there ...
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Does a router need to have an IP address?
Does a router need to have an IP address? if the answer is yes, then what is the router IP address used for (one reason I can think of is NAT, but not all routers are used for NAT)?
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Do all routers have two IP addresses?
I know that a home router have a private IP address and a public IP address, but what about the routers that an ISP uses, do these routers also have two IP addresses?
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In what situation would normal choke packet be preferred over hop-by-hop choke packets?
When the host is far away, it makes sense to use hop-by-hop choke packets to resolve congestion.
But is there situations where normal choke packet is more appropriate?
And by the 'source' we mean a ...
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