Is there a program that will tell me what's eating the bandwidth on a lan? I'm thinking of something that would tell me that a.b.c.d is using so many mbps and a.b.c.e is using this many and so on. Or can just-another-computer-on-the-network actually see that sort of information? I don't know enough about the low level nuts and bolts of networking to know if it has that kind of access. I'm really just interested in volume of traffic per attached device rather than specific origin/destination information if that's easier to obtain. This way if something is eating the network I can find out what it is without having to start unplugging cables and so on to find out when it stops. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
On Sun, 28 Mar 2021 10:53:49 -0600 Frank Cox <theatre at sasktel.net> wrote:> Is there a program that will tell me what's eating the bandwidth on a lan? > > I'm thinking of something that would tell me that a.b.c.d is using so many mbps and a.b.c.e is using this many and so on. > > Or can just-another-computer-on-the-network actually see that sort of information? I don't know enough about the low level nuts and bolts of networking to know if it has that kind of access. I'm really just interested in volume of traffic per attached device rather than specific origin/destination information if that's easier to obtain. > > This way if something is eating the network I can find out what it is without having to start unplugging cables and so on to find out when it stops. >https://www.cyberciti.biz/faq/centos-fedora-redhat-install-iftop-bandwidth-monitoring-tool/
On Sun, Mar 28, 2021 at 10:53:49AM -0600, Frank Cox wrote:> Is there a program that will tell me what's eating the bandwidth on a lan? > I'm thinking of something that would tell me that a.b.c.d is using so many mbps and a.b.c.e is using this many and so on.Is this a home network or a business one? If a home setup (or small business with consumer-style networking), https://openwrt.org/docs/guide-user/services/network_monitoring/bwmon> Or can just-another-computer-on-the-network actually see that sort of > information? I don't know enough about the low level nuts and bolts of > networking to know if it has that kind of access. I'm really just > interested in volume of traffic per attached device rather than specific > origin/destination information if that's easier to obtain.You're right that you generally can't see everything from just any computer on a network, at least if it's switched. You need to watch from your gateway. -- Matthew Miller <mattdm at fedoraproject.org> Fedora Project Leader