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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2answers
114 views

How does a computer know IP address of a computer on another network

I was watching a video explaining ARP, which was explained really easily but I got confused when they said that Host A already knows Host D ip address which is on another network. Host A and B were ...
2
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1answer
550 views

What “32-bit boundary” means?

As a non English speaker, I'm not sure to understand this sentence : "Padding bytes are added at the end of the Packet Data Field to align the Packet Data Field to a 32-bit boundary". For me, "...
5
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2answers
81 views

Network Switch Power Isolation

I run a small office network that uses TP-LINK T1600G-28TS (TL-SG2424) JetStream switches. The office is across two buildings, each fed by a different phase of power. We've recently installed HD ...
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1answer
65 views

Network IP questions [duplicate]

Suppose I have a network with IP address 192.168.10.1/16. This network can hold up to 65536 machines, from 192.168.0.0 up to 192.168.255.255 (65534 machines without the network ID and broadcast ...
0
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1answer
600 views

locally vs universally administered MAC address? [duplicate]

Difference between locally and universally administered MAC address? What is the purpose of locally administered MAC address?
3
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1answer
400 views

VLAN VoIP and LAN configuration over multiple switches

Some background: I currently have: Switch A Main 48 port 1Gbps (DLink) Switch B 10Gbps Backbackbone (DLink) Switch C 24 port 1Gbps (DLink) Telephone Switch 1-24 port phone switch connected to a ...
9
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4answers
664 views

Abstract language to describe network deployments?

Is there any more or less standard/spec that is, vendor neutral, for network configuration language? Say, a VPC with networks and virtual machines would become an XML or JSON file. Something like, &...
2
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2answers
467 views

Why are proxies implemented on the application level of the OSI model?

Why are all proxy servers implemented on the application level of the OSI model, and not the network level? Is it possible to implement a proxy server on the network level? Such as on the gateway ...
0
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1answer
249 views

If a router doesn't know where to send data what 2 options does the router have?

Looking back at some notes i've been making while going along trying to learn for ICND1 (still very early days), I have this question which I found while trying to quiz myself "If a router doesn’t ...
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2answers
338 views

Switch virtual interface

Single SVI can be mapped to a VLAN. When configuring VLAN on SVI, are there any fix no of subnets can be assigned to a single VLAN? maximum number of VLANs can be configured on the switch =4094 ...
2
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2answers
3k views

Cisco 899G-LTE Cellular 0 interface in spoofing mode

I have a problem. After I've reseted my router configuration it doesn't get IP from LTE SIM card. Seems like my celullar0 interface is in spoofing mode. > Router#show interfaces cellular 0 ...
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2answers
147 views

Make devices visible under Access Point

In our network, all wired PCs have a direct access to internet (83.XX.XX.XX) and a secondary IP address on the same NIC in order to access a subnetwork (192.168.10.XX) with wired peripherals (scanners,...
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1answer
3k views

How to Troubleshoot Network Latency Step by Step

Does anyone have an idea of how to troubleshoot high network latency step by step? For example, let's say we have a remote office. And all users are from that office are having high latency accessing ...
4
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2answers
1k views

How does a TCP segment fit into a smaller IP packet?

The IP protocol can handle fragmentation and it includes the fragmentation offset and identifier. I know this comes into play when your IP packet is too big for some specific network or link where the ...
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6answers
6k views

What stops someone from configuring their network with IP addresses they do not own?

Here's the scenario. I was picturing a university that bought a range of IP addresses. I think their network would still be connected to an ISP (right?), but they'd have freedom to configure stuff the ...
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2answers
3k views

Importance of DHCP option 12, client host name

The main purpose of a DHCP server is to provide dynamic configuration for a group of hosts (mainly IP, Gateway and DNS). There are several options that can also be sent. Option 12 (client hostname), ...
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8answers
9k views

Why are IP addresses given to each interface and not device? What would the implications of that be?

Why do we need to give IP addresses to each interface? Wouldn't giving one to each device be enough?
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0answers
283 views

Help with network setup issue (small network)

I am trying to set up a new network for a small business, and I can’t figure out what I have misconfigured. Hoping someone can provide me with some ideas. I have 6 VLANs set up. 10.10.10.0/24, 10....
1
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1answer
62 views

What does the speed of Network Switch actually mean?

Network switches usually come in speeds of 10/100/1000 Mbps, and that's all fine and dandy, then I got thinking.. Suppose I have an 8 port 1000 Mbps switch, each port connected to a client. If a ...
1
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1answer
145 views

Can a machine be its own DHCP server for another interface?

I was wondering if a single machine (with several network interfaces) can be, at the same time, a DHCP server and a DHCP client, that is the server would dynamically attribute an IP address to an ...
0
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1answer
183 views

How to connect separate physical devices to same virtual network in VMWARE [closed]

I am trying to create a vitual active directory network at home. I am trying to do this in VMWare. I have 2 actual physical computers. Here is the plan: 1st Physical Machine: Using vmware create the ...
0
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2answers
77 views

Help with non-profit network

Our church network and 10 security camera system is is run by a i5 2500K - 8 GB memory with an AMD 5570 HD graphic to one monitor and the onboard Intel HD 3000 chip to a second monitor. The current ...
0
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1answer
75 views

Cisco ASA 5506 log collection after power cycle

Today we had to power cycle our Cisco ASA 5506 , since I could not connect to it through any of the connected interfaces. How can I get the logs to see what failed or what was the state of the ASA ...
3
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3answers
2k views

Cisco ASA logging to remote syslog question

I have Cisco ASA and i have setup graylog logging server and i am seeing no logs coming on remote syslog so this is what i did.. Current config: asa-fw1-010101-2-7/pri/act(config)# show run logging ...
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0answers
25 views

Network Video Buffering [closed]

We are facing some issue in our office internet. We are using Airtel 80mbps as an primary WAN link. When we play Particular live video channel from device, say name as A, the video is buffering more ...
0
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1answer
272 views

WAN/Campus network design - Learning purposes

I am trying to build a WAN connecting various LAN's via frame-relay for learning purposes, i do not have that much experience with frame-relay or network design (mainly creating LAN's and connecting ...
0
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1answer
147 views

How does a router forward datagrams from the internet to an interface of a private network?

As I have seen in How does a router know to which PC in a network to send a response from a server? if I haven't misunderstood it, if an interface in a private network sends a Datagram to the outside ...
3
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1answer
76 views

what is pump conversion efficiency?

I am reading an article about Optical Fiber amplifier and i saw the term pump conversion efficiency. Do you know what this mean ? I have seen on the internet that energy conversion efficiency is the ...
0
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1answer
5k 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 ...
1
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1answer
66 views

Quanta switch not resolving addresses

I've got this brand new Quanta T3048. I've configured the VLANs we need but it came to my attention that the switch won't resolve any address even though I've set it (according to the configuration ...
2
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1answer
92 views

Routing and Switching & network monitoring

hi i am facing problem in juniper switch Model: ex4200-48t ,Junos: 15.1R6.7 . i deploy network monitoring check-MK software. there is showing errors of juniper switch ports and also show in logs file ...
2
votes
1answer
277 views

Is there any video streaming online service that actually uses UDP?

We usually hear that UDP is used with data with which a few packets loss/out-of-order can be tolerated like video streaming. And the instructor typically goes on saying "so if you lose a few ...
0
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1answer
442 views

What is the difference between Active and passive queues? [closed]

Hi guys could you please help me. I want to understand the fundementals of Queuing but I am stuck on the difference between Active and passive queues. Firstly, what is an active queue? Secondly, what ...
1
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1answer
71 views

Multiple Networks on Sonicwall with no access to cisco firewall

The issue im having is that i have 2 networks with 2 internet connections. We now all of a sudden have a POS system handling our network. This system blocks our email and a bunch of pages we use. They ...
1
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1answer
1k views

Inter Vlan on L3 switch

I do an inter-vlan L3 switch lab on Eve-ng emulator. The topology like below And this is output from some show command at the L3 switch: Building configuration... Current configuration : 1422 ...
3
votes
1answer
683 views

Spine Leaf L3 TOR DMZ Design for Virtual Environments

I have a question regarding DMZ design in our DC. Let me give you some background. We have 1 rack 2 Spines 2 leafs L3 TOR connected to each spine ESXI hosts connected to the leafs 1 Palo ALto ...
2
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0answers
69 views

Simulating TCP/IP Illustrated Test Network [closed]

I just recently bought TCP/IP Illustrated volume 1 first edition for cheap and I see that they reference a test network throughout the book that looks like the following Now I'm not the sharpest tool ...
0
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1answer
494 views

Ping and tracert command result [closed]

Here i have the response when i use commands ping and tracert for google.com Now, i am still new to networking, but i need to know how to interpret the response that i got here: 1) First off, i need ...
4
votes
2answers
118 views

Whether we usual use dot-decimal notation to represent network or IP by opposite mask?

Whether we usual use dot-decimal notation to represent network or IP by opposite mask? 10.10.10.0 0.0.0.255 # a network 10.10.10.0 255.255.255.0 # a IP Update if we represent a network, we can use ...
1
vote
1answer
216 views

Why RIP announce network does not need the mask?

The below is the RIP protocol's declaring the routing command: Router(config)#router rip Router(config-router)#version 2 Router(config-router)#network 1.1.1.1 Router(config-router)#network 192.168....
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2answers
176 views

Explanation of traceroute

Can anyone help me to explain the results of this traceroute. Why on hop 2 will latency suddenly increase? and decreases at hop 3 and will rise significantly to hop to 8.
4
votes
3answers
2k views

What does the “T” shape mean in network topology?

What does the "T" shape mean here? There is a logogram, but I want to know the RTA's left side port whether is config the 192.168.1.0/24 network segment's IP address. This is Quidway technology.
6
votes
3answers
4k views

Need help understanding how packets travel across the internet

I've been learning about networks recently at a new job, and I did a presentation on what I've learnt so far. When I was describing the relationship between the datalink and network layer, I mentioned ...
0
votes
1answer
80 views

Linux network bonding/teaming

I have two linux servers with two NICs each and two unmanaged switches. This is my preferred design: Server A - eth0 -> Switch 1 Server A - eth1 -> Switch 2 Server B - eth0 -> Switch 1 ...
1
vote
1answer
87 views

Is the Backbone Area connected AS Area are through one router?

I am studying Networking, and I find the Area 0.0.0.1, Area 0.0.0.2 connect to the Backbone Area is through one path, is it means only through one router(or say not more)? we often hear that the ...
-1
votes
1answer
166 views

BroadBand to Ethernet converter [closed]

we will have PaloAlto Firewall to use it in our SOC network and the line that we have is 100M broadband Internet, please I need your help to find a solution to convert the available 100M broadband ...
1
vote
1answer
67 views

Routing an owned /24 IPv4 block to a single server [closed]

How would one go about routing a recently-purchased /24 block of IPv4's to a single server? The server is colocated in Zare.com, and the BGP session is already set up and announced.
6
votes
3answers
975 views

What is the characteristic of spoofed ARP packets?

Hi what is the characteristic of spoofed ARP packets? I want to know how to detect it but before that I have to know how can I call a packet a spoofed packet. I hope you can help me thank you.
1
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2answers
198 views

Do I need a Gateway if I try to Ping a Client in the same Network?

In NFX I'm trying to create - Devices in a Network with 2 Clients, which can communicate with each other. But it does not work, is it because I have not set a Gateway which can tell the Client, where ...
2
votes
2answers
352 views

How does DOCSIS relate to DVB-C

I'm new at telecommunications so this may be a simple question, but somehow I can't get my head around this. Can someone explain me in simple words how the terms DOCSIS and DVB-C are related? Both are ...

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