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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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13 views

N9k environment port error monitoring

We use prometheus for collecting the data over SNMP from n9k. And grafana for interpreting the data from the prometheus. How to monitor port CRC err, when n9k's MIB does no longer have support fot ...
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Provide global unicast address for client devices connnected to Linux NAT [closed]

First, I'd like to stress that I'm unfamiliar with IPv6, whatever I had learned on my CCNA course more than 5 years ago I've forgotten due to disuse of the knowledge since. Second, let me describe my ...
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14 views

Configuring VPN interface to ignore national IP ranges [closed]

I'm using the following configuration to route devices on 192.168.1.150-199 through a VPN. How can I ignore specific destination IP ranges, so national traffic goes through my ISP, and international ...
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36 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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How does a router know which IP's are available in a LAN network with multiple wireless routers [closed]

Suppose I have three wireless home routers connected with each other through LAN ports like this, router 1 LAN port to Router 2 lan port, router 2 lan port to router 3 lan port. Then lets say router ...
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How to do auto tunneling or auto port forwarding for an app over a router? [closed]

The question is very clear. Just how to let an app to communicate with other apps on WAN by crossing the router. Tunneling is good for fixed back and forth communication but not good for one way from ...
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14 views

Router to router via DMZ [closed]

I have one router that has the connection to the internet. This router is very limited in its functionality (I can't set custom DNS addresses or point to another DHCP server). Can I point this router ...
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2answers
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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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Replacing FIOS rental router [closed]

I have a bundle TV+Internet FiOS Service from Verizon. FIOS cable (basement) -> ONT (basement) -> FiOS Quantum Gateway Router (other side of the house) I want to accomplish a few things: ...
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12 views

Why is my ping in game and also speed in apps like Instagram slow? [closed]

Using a 50mbps download speed internet but seems that even though my download speed is good but the in-app speed seem to be slow as Instagram keeps loading up etc..
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Commercial WiFi to local network for RV / TinyHome [closed]

Attempting to connect ~6 devices to an enterprise wifi hotspot by creating a local network to reduce sign in problems for smart TVs and IoT, however the network in question (GoWifi) has a sign in ...
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1answer
38 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
60 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
35 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
161 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
35 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
44 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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31 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
193 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
28 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
45 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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122 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
45 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
40 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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53 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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1answer
40 views

Does Network segmentation work using different switches connecting to router?

I just learnt basic networking. If I have 2 departments which I do not want them to access each other's networks, does using two layer 2 switches connecting to the router does the job or do I need a ...
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1answer
98 views

Cisco ASA and a Router?

I'm trying to understand networking and when looking at the different routers, firewalls and switches, I came across Cisco ASA. I've read that these can be used as firewalls and routers but others say ...
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1answer
54 views

LAN to WAN IPv4 address mapped to LAN server through NAT Rules or other

I need to set a rule that allows me to connect BOTH from OUTSIDE the LAN (from the "internet" to the Internal server at IPv4 address 10.64.0.50 via port 22, by running ssh://1.2.3.4 -p 22; AND From ...
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3answers
38 views

packet filtering using bridge vs router

I have a question about the bridge vs router packet filtering using firewalls. I know the basics of the router and bridge and on which layers they work. I just wanna know that on bridge how does ...
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2answers
146 views

How does aggregate routes behave in BGP?

If a router received two BGP updates for the same prefix and both these updates are aggregate paths how do the router decide which one to take? Let us say that it needs to decide based on AS Path ...
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24 views

CISCO Packet Tracer

Does Cisco Packet Tracer support config memory and config network command? If no, then do enterprise routers still support it?
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1answer
111 views

How does NAT ensure that every machine has a unique public IP?

I am trying to understand the distinction between public and private IP addresses in IPv4 networking. The picture I've been told has some problems with it, so I would like to present it here and ask ...
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2answers
84 views

How BGP guarantees same route for a forwarded packet?

In BGP all routers choose the best route to a single destination. So for Router A and destination D, A will forward the packet to the next-hop router (let us say router R) after knowing the best route ...
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1answer
37 views

How does a router settings page work? [closed]

When we enter the routers address 192.168.x.x into our browser we get a page containing the setting for the router. How does this page work ? Is the page stored in the router ?
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1answer
24 views

Question On Route Aggregation [duplicate]

Suppose I have these 3 IP Prefixes : 190.154.27.0/26 190.154.27.64/26 190.154.27.192/26 and I want find the aggregate prefix. I convert each address to its' binary equivalent: 10111110....
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1answer
12 views

Parameter Map vs IP SLA

What is the difference between parameter map and ip sla? In both we can specify that if threshold of something is crossed then a log is generated and based on that some action can be taken. Has one ...
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2answers
69 views

How does a router route traffic on a LAN, in detail?

Electrical engineer here trying to understand things. So I guess this might be simple or very complex, but how exactly does a router route traffic between say 2 PCs that are on a LAN? eg. PC-1 and PC-...
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1answer
23 views

Strict source routing using my own scattered PCs/ routers

I would like to completely control my network transportation by defining the packages path. According to this I can't do it unless I have control over all the PCs/ routers in its way. Suppose, I can ...
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1answer
26 views

Why do we need EIGRP AS numbers when we have EIGRP RID?

I understand that the EIGRP routers need to have the same AS number to peer with each other. But why can't we just use EIGRP Router ID?
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271 views

how to factory reset ASR 1001-X

So I was setting up/testing this router. While using auto-secure during the auto-configuration. {Router#setup...} Once I get through auto setup and reloaded. I was not able to login. I did some ...
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1answer
34 views

Why doesn't traffic go through router on LAN? [duplicate]

So I thought that when two devices are connected to a router, and if they wanted to communicate with each other, then all the traffic will go through the router(AP). I tried running a traceroute and ...
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1answer
41 views

Is there a way to determine my network transportation to specific path?

How can I determine my network transportation to specific path. I would like to determine that my data packages will go through specific routers.
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1answer
58 views

How do VLANs Work? Some Basic Questions: [closed]

I've recently started looking into VLANs. I am a network novice so bear with me please:). I have a few questions regarding VLANs. I understand that certain managed switches allow you to create VLANs. ...
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2answers
73 views

Why are there so many more dual-band (2.4 & 5 GHz) Wi-Fi APs than single-band, 5GHz-only ones?

Why are so many more dual band (802.11n 2.4GHz & 802.11ac 5 GHz) APs than single-band, 5GHz-only ones? Is this for backwards compatibility?
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1answer
33 views

Does every router in public network knows all the other public interconnected networks in the world?

I am reading this article https://www.practicalnetworking.net/series/packet-traveling/host-to-host-through-a-router/ , trying to learn how a packet is delivered between different networks. It says: ...
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1answer
39 views

Hide SSID to block probe requests from clients

According to this Answer clients are sending probe requests to discover wifi networks. If I hide the SSID the AP wouldn't need to handle these probe requests and therefore the workload would be lower....
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3answers
78 views

Does a router send its own mac address or the mac address of the user?

When a request is made, does the router send its own mac address or the mac address of its user? Does it send the mac address at all? My specific case is the following: I am getting a 4g sim card to ...
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2answers
75 views

Can a router route 2 switches with multiple vlans and subnets

Good afternoon/evening, Today on my Cisco Packet Tracer, I made two layer 2 switches and 2 PCs on each switch. I created a vlan 10 on the switches. I trunked the switches together so they can see ...
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1answer
30 views

Modern routers: number of NICs, ports and mac addresses

I read that NICs in modern routers are responsible handling of multiple ports. Is it true to say that every port has a different MAC and IP address, and thus a NIC might have multiple different MAC ...
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2answers
46 views

Using 2 different ISP In case one dies

It's my first ever post in here and I hope not the last. I'm looking for some advice. I'm trying to reduce my internet downtime for a local network. My setup. Mix and match computer environment (...