Questions tagged [bandwidth]

For questions about bandwidth where bandwidth is the amount of data that can be carried from one point to another in a given time period (usually a second). This tag is suitable when your question is about network congestion, speed, throughput and of course low bandwidth problems.

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5
votes
5answers
199 views

How do two computers with different speeds communicate

This is one extremely basic and probably equally dumb question that I just couldn't ever find a definite answer to. Suppose we have 2 computers one that can transmit data at say 10 bits per second (A)...
4
votes
2answers
453 views

How does link aggregation work in reality?

I'm concerned that I'm misunderstanding how aggregators work in the scenario below: I have a project where I need 40 Gbps links between switches. My plan was to have my three switches use all four of ...
10
votes
3answers
4k views

Why does my UDP Broadcast wireless communication is capped at 1MBs?

I am trying to implement Network Coding over a meshed network. Therefore I need to send packets to several destinations, this is way I am using Broadcast packets. But I can not understand why this is ...
5
votes
2answers
2k views

Speed benefits when switching from 1Gb copper LAN to Fiber Optic

We are trying calculate how will the network performance improve when we switch from 1Gb copper LAN to Fiber Optic. We have 5-20 people simultaneously working on a Server via the 1Gb LAN. There are ...
4
votes
3answers
5k views

QoS or more bandwidth?

Being in SP field I sometimes hear folks say "we do not need QoS, just let's make sure we have enough bandwidth". This has always been bothering me, because currently we have a network without any QoS ...
2
votes
1answer
84 views

Does link aggregation uses the full bandwidth?

If I setup a 2x 1Gig ports with link aggregation, will I get 2Gigs bandwidth or less? how less? thank you
2
votes
3answers
367 views

How can 1000BaseT transmit on Rx & receive on Tx pins?

How can 1000-BaseT (Gigabit ethernet twisted copper pairs) technology transmit over the Rx pins & receive over the Tx pins? It's baseband technology (hence the name), right? Discrete digital ...
11
votes
1answer
7k views

Traffic generation from Cisco IOS device to prove WAN circuit

In essence I want to know if there is any way that we can use extended ping or any other command variants to prove to the customer that that the circuit is able to achieve the minimum CIR. The CE ...
7
votes
2answers
292 views

What determines the degree of parallelism that can occur over a network?

I'm trying to learn more about how a network (both LAN and Internet) handles traffic, and one part of this is the question of parallelism. In the documentation for Speedtest.net, in describing how ...
5
votes
1answer
13k views

How To Limit a VLAN to a Specific Bandwidth Quota

I have a Cisco Router 1900 series and I would like to limit the bandwidth used by a subnet/subinterface. This subnet/subinterface (192.168.10.*) uses most of the bandwidth making it useless for other ...
5
votes
4answers
10k views

Cisco Router Limiting Bandwidth

I have a Cisco 2621XM connected straight to my ISP modem. I have a computer on the second interface of the router. Topology: ISP -> Modem -> Cisco Router -> Computer When I run a ...
1
vote
1answer
208 views

What is the meaning of the word 'band' in the following terms: broadband, baseband and bandwidth?

I am interested in the terminology of the following words: baseband, broadband and bandwidth applied in tellecomunications. What is the meaning of the words, how were they formed and what do they mean ...
0
votes
4answers
53 views

why we make each burst of data 2 times the product of bandwidth and delay?

Below is from my textbook: if we need to send data in bursts and wait for the acknowledgment of each burst before sending the next one. To use the maximum capability of the link, we need to make the ...