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Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

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8 views

Problem with Sharing a 4G Network using multiple Access Points [on hold]

I have a really interesting problem in my home network currently. Due to DSL speed limitations of our ISP in my area, I upgraded to 4G network with roughly 3x the speed I get from my previous DSL ...
-1
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0answers
15 views

Splitting into 4 subnets [duplicate]

I am trying to attempt a past exam question. The question is as follows, Consider a router that interconnects four subnets: Subnet 1, Subnet 2, Subnet 3 and Subnet 4. Suppose all of the interfaces ...
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1answer
237 views

Add ports on Packet Tracer 7

how do you create new ports using WMIC-4ESW on my routers on packet tracer 7? both of my routers have 2 GigaEthernet and I used them because my 2 networks on each router. I need to be able to add more ...
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0answers
6 views

Multiple DHCP servers detected by access points [on hold]

I’m having an issue with our internal network and voip network. I currently have it setup as a non-converged network separating our two data switches and one voip switch. We preferred not having our ...
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0answers
10 views

Is it possible to simulate a cable modem connection? [on hold]

I am trying to setup a test network. I want to provide an equivalent to a cable modem connection without actually having a cable connection. The reason is I have a dd-wrt modified router I'm trying to ...
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1answer
22 views

Connect to the Same VPN with two different PC on the same Private Network [on hold]

From two different PC on the same private Network, is it possible to connect to the same VPN with the same credentials???
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5answers
3k views

Network latencies between opposite ends of the Earth

This is just out of curiosity. I'm currently in South-east asia, and when I pinged domains such as bbc.co.uk and google.com (in California), I get latencies of around 5ms as below: 64 bytes from 151....
2
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1answer
49 views

Do unmanaged switches honour QoS priorities set by managed switches?

Details about the devices We have a 24 port NETGEAR managed POE switch that has QoS capabilities. We also have the following unmanaged switches, 24 port Cisco POE, 48 port Cisco, 48 port NETGEAR, ...
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0answers
17 views

Can QoS provide a benefit after data has gone through other unmanaged switches first? [duplicate]

Details about the devices We have a 24 port NETGEAR managed POE switch that has QoS capabilities. We have the following unmanaged switches, 24 port Cisco POE, 48 port Cisco, 48 port NETGEAR, and 24 ...
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0answers
11 views

Secondary router used as access point has extremely low speed [on hold]

I have had a spare BT Homehub 4 set up as an access point connected LAN-LAN via power line adaptor for boosting signal in my house. The main router is an ASUS DSL-AC68U. I receive download speed of ...
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0answers
13 views

Cisco Packet Tracer - How do I connect these networks through a router? [on hold]

I am trying to connect these two switches through the router as shown and also correctly configure the wireless router on each network so that they connect to their switch. Basically anywhere there's ...
2
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1answer
61 views

NAT and two internet providers, how to configure failover

Will you please help me to setup ISP2 as a failover internet provider. Configuration as follows: ip source-route ! ip cef ! no ip domain lookup no ipv6 cef ! multilink bundle-name authenticated ! ...
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0answers
13 views

How to connect access container IP from host [closed]

Let's say I have a docker container running a web application inside docker container on port 8080. I have not mapped the ports (at docker run did not do -p 8080:8080) Container's IP is 172.17.0.2 ...
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0answers
15 views

Isolating devices [closed]

In my home, I have some devices connected to the internet, but my father is not concerned about security, so I want to isolate all his devices (one of them use cable) and deny ALL possible traffic ...
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0answers
9 views

Mention the algorithm(s) which can be used to compensate or eliminate any issue encountered during this data transfer activity [closed]

If two systems A and B, send data at the same time to some other systems D and F respectively. It can create some problem/issue. a) Mention the algorithm(s) which can be used to compensate or ...
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0answers
11 views

How to fill all of these fields in QoS? [closed]

I want to make the internet speed of a specific user on my router slow, but i have no background about these things can you tell me what should i put on each field?
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0answers
8 views

Enabling Port 33133 On Windows 10 [closed]

I have an internet connection which runs through a modem to a PC with a Windows 10 operating system. My modem is an Arris SurfBoard SB6183. Modems do not have port forwarding, it is up to the computer ...
3
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0answers
33 views

Cisco nexus 9396 rebooted with reason xbar_client

Today my one of cisco nexus 9396PX switch got rebooted and this is what i found, based on following logs what could be wrong? We don't have Cisco support for this switch, trying to see if i can get ...
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1answer
29 views

Why does Nmap not detect a host which is active and responds to Ping?

I have connected to another laptop via the LAN cable, i am able to access the services running on the other laptop via Ip & Port. When i Ping that Ip, the machine is successfully responding. But ...
2
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1answer
71 views

What is Open Radio Access Network?

what is the concept of this open radio access networks?? more specifically what is this "open" for? how is it different from those of general RAN?
1
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1answer
38 views

Which TAP is the right one for my network?

I want to buy a TAP but I'm uncertain which device is the right one for my environment. The command sudo lshw shows the following about my Ethernet: *-network description: Ethernet ...
1
vote
1answer
41 views

Connecting networks from different states [closed]

Is it possible to connect 5 networks together using one router as a central component even if the networks aren't close to each other? An example would be 2 networks in Houston and 1 in Dallas Texas, ...
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0answers
47 views

Unable to ping from one computer to another

Below you can see the topology of my network in cisco packet tracer. What I am trying to do is ping B2-Guest from B2-Management. When I try to ping B2-Guest from B2-Management the packet is lost at ...
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2answers
42 views

What does it mean when the last digits of an IP address change? [closed]

So in a case where I have an IP address, 162.158.68.xxx, what is happening when those values in xxx change? I ask because I'm looking at requests going through to my application's server and one of ...
2
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1answer
69 views

Using an Ethernet cable and USB Ethernet adapter at the same time?

What would happen on using an Ethernet cable connected to one network and then plugging in another Ethernet cable but using an USB Ethernet adapter from a different network. Would it connect to both ...
7
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1answer
1k views

Raw API data for Cisco Meraki CMX Dashboard

Has anyone worked with Meraki's CMX raw data feed and can help answer some questions? I came here to ask because I have found no conversations about Meraki's CMX API elsewhere and I imagined that ...
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1answer
51 views

Map of WAN cables in general [closed]

Whenever i search for the physical location and path of WAN connectivity, i only find submarine cables, and a site that seems like a paid service. Is there no free map where i can e.g. show the route ...
4
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2answers
68 views

Stop Memcrashed amplification DDoS attack

DDoS is essential part of my life so i am back with more question, Yes we started getting memcache based UDP amplification attacks, all source ports are 11211 coming from many random source IPs, we ...
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2answers
45 views

should phy layer and mac layer be designed together?

I have a question about the independence of the layers. I know that the layers in protocol stack are designed in a way to be independent from each other. I want to know does it mean also that we can ...
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4answers
101 views

Why Vlans need routers to communicate?

why devices on two separate VLANs (Virtual LANs) implemented on the same switch require a router to communicate.
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0answers
13 views

Why can't I reach mail.google.com, translate.google.com and chrome.google.com? [closed]

I'm experiencing trouble trying to connect to Google. This is the case both through any web browser, and ping from Command Prompt. The trouble is limited to: Laptop devices but not Mobiles my home ...
1
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2answers
95 views

Confused about the results from the cable tester

A little bit of backstory, just in case you want some context. In the last couple of weeks the network at least internally has slowed down. As far as I can tell the only things that have changed has ...
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1answer
50 views

Cisco ASA not passing traffic between two interface

I have Cisco 5506 with Security Plue License and following is my configuration. interface GigabitEthernet1/1 nameif inside security-level 100 ip address 10.0.10.1 255.255.255.0 ! interface ...
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3answers
75 views

Is it possible that two servers were configured with the same ip under the same switch

I have two physical servers, their configuration as following: ServerI: IPADDR=10.1.1.5 NETMASk=255.255.255.0 ServerII: IPADDR=10.1.1.5 (Same IP) NETMASk=255.255.0.0 (different NETMASK) Because of ...
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0answers
32 views

sflow configuration Cisco Nexus 9396PQ

We have Cisco a Nexus switch with M12PQ 12x40G GEM expansion card. Today when i enabled sflow on one of 40G interface i got following error: # sflow data-source interface e2/12 In order to enable ...
3
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1answer
248 views

Issue with Distributed Trunking and pings

Recently we've configured 4 HP switches which are using Distributed trunking. See picture So the problem is this. Rack 4 has 2 switches (Left on the picture). One of these switches is the root ...
4
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3answers
275 views

Is there any reason to use a hub over a switch?

Given that hubs are essentially the same as switches, as far as I know, except they share bandwidth between all connected devices, while switches do not, resulting in faster connections. I am simply ...
2
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1answer
68 views

nxos ansible playbook to configure interface

Last few days i am playing with cisco nexus switch to deploy config using nxos ansible modules to make it automate. I am running n3000-uk9-kickstart.6.0.2.U6.6.bin software and here is my playbook ...
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0answers
7 views

How do netmasks work? [duplicate]

A bit of a noob question, but this isn't quite clear to me yet. Ip Address Decimal 10 20 0 100 Network Decimal 255 255 0 0 ---------------------------------------...
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0answers
20 views

Questions about IP addresses [duplicate]

So, I have to research IP addresses, and there are a couple of things I don't quite understand. In my test there will be questions like 'Which of those IP-addresses is private' or 'which of those is a ...
1
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3answers
62 views

How to explain the data flow of OSI model layers in a single picture [duplicate]

Take an example of searching www.example.com in a web browser. I have some confusions at each layer and they are We have opened a web browser and searched for www.example.com. Now, As far as I know, ...
1
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1answer
37 views

Help with network setup [closed]

I have the following situation: Router 2 is a given. It is used by several people to go on the internet ('People we don't trust'). We are a tiny company that is supposed to go on the internet ...
7
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2answers
849 views

Why do IPv6 unique local addresses have to have a /48 prefix?

According to RFC 4193, unique local addresses will always have a prefix of FD00::/8.. but according to Wikipedia: The block fd00::/8 is defined for /48 prefixes, formed by setting the forty least-...
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1answer
21 views

Can a hub be used for sniffing traffic from a device?

My intention is to analyze all network traffic which is coming to and originating from a network connected device I have. From the configurations of the device I am able to proxy all the HTTP traffic ...
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0answers
18 views

Confuse about type of handover in Mesh Router?

I have difficulty in understand the concept of handover which can be categorized into two: Horizontal or Homogeneous handover Vertical or Heterogeneous handover Horizontal handover occur within the ...
3
votes
1answer
69 views

Does IEEE 802.11 allow soft-combining?

Out of purely theoretical curiosity, I was wondering whether the IEEE specification for WIFI allows for ARQ with soft-combining. I found a number of publications describing the benefits of soft-...
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1answer
35 views

using 802.1x with nic teaming

I am working on a project which is mandatory to have each pc configured with two network interface cards as a nic team. I want to use 802.1x for authentication with a radius server like cisco ISE. My ...
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2answers
2k views

What is IP squat space

I came across this article and I'm trying to understand what is going on here, I found some packets on my network containing 22.0.0.0/8 and 29.0.0.0/8 IP range and It's based on: https://en.wikipedia....
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2answers
73 views

Loopback Interface speed is 10 Mbps but Incoming and Outgoing Traffic is in Gbps

I am writing a script which mails interface data to network admin. For this I'm using LibreNMS and RRDTool to gather data. On inspecting one of the loopback interfaces, I found that the interface ...
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0answers
50 views

Deploying Segment Routing in Cisco XRv9000

The Workflow for Deploying Segment Routing according to this is the following: Configure the Segment Routing Global Block (SRGB) Enable Segment; Routing and Node SID on the IGP Configure Segment ...