- Aug 25, 2001
- 56,570
- 10,202
- 126
Just wondering if there are software tools for testing links. Something that sends a continous stream of time-stamped packets, and then another program acting as a reciever.
Want to measure packet loss and retransmits.
Having trouble with the network here at a friend's house. It's an older house, that has been added on to. There are two main sections to the network. Upstairs, there is the "computer room", that has a PC, and the cable modem, a 16-port 10/100 switch, and a trendnet 652 router. In the upstairs lobby, there are two PCs, that each have a wired connection to the switch. There is another PC in another room upstairs that is connected wirelessly, since there is no wired connection available in that room.
Then there is the network section downstairs. There is a cable, a long patch cable running from the uplink port on the 16-port switch, downstairs to a 5-port 10/100 switch. Then there are two PCs connected wired to that switch, and another wireless router acting as an AP only. There is a cable going from that switch through the wall to another room, where another PC is located.
The problem is that the PCs connected to the downstairs switch seem to be losing connectivity. Win7 will report no connection to the internet sometimes.
Since this is happening to multiple PCs all connected to the downstairs switch, I suspect the switch, or the cable going upstairs.
The cable going upstairs, has been spliced. (NOT my idea, this happened years ago) It does show up as a 100Mbit FD link according to the lights on the upstairs switch, so it seems that all of the wires are spliced correctly.
The downstairs switch used to be a 10Mbit hub, but after a number of years it failed, and was replaced a few months ago with the current 10/100 switch.
I don't have direct access to the downstairs switch, have to wait for my buddy to get home from work. There was a yellow light on one of the ports last time I looked at it (10Mbit?), I haven't verified if that is the same cable that is running upstairs or not.
But would two switches have different ideas about the link speed on the same connection? Is that possible?
What is happening now is very similar to what was happening before when the 10Mbit hub downstairs failed. But the new switch is a Dlink, is it possible for a switch to fail in less than six months? I could try replacing the switch (again), it would be the simplest fix, but I'm still iffy about whether or not the cable running upstairs to downstairs is capable of handling a stable 100Mbit connection.
Want to measure packet loss and retransmits.
Having trouble with the network here at a friend's house. It's an older house, that has been added on to. There are two main sections to the network. Upstairs, there is the "computer room", that has a PC, and the cable modem, a 16-port 10/100 switch, and a trendnet 652 router. In the upstairs lobby, there are two PCs, that each have a wired connection to the switch. There is another PC in another room upstairs that is connected wirelessly, since there is no wired connection available in that room.
Then there is the network section downstairs. There is a cable, a long patch cable running from the uplink port on the 16-port switch, downstairs to a 5-port 10/100 switch. Then there are two PCs connected wired to that switch, and another wireless router acting as an AP only. There is a cable going from that switch through the wall to another room, where another PC is located.
The problem is that the PCs connected to the downstairs switch seem to be losing connectivity. Win7 will report no connection to the internet sometimes.
Since this is happening to multiple PCs all connected to the downstairs switch, I suspect the switch, or the cable going upstairs.
The cable going upstairs, has been spliced. (NOT my idea, this happened years ago) It does show up as a 100Mbit FD link according to the lights on the upstairs switch, so it seems that all of the wires are spliced correctly.
The downstairs switch used to be a 10Mbit hub, but after a number of years it failed, and was replaced a few months ago with the current 10/100 switch.
I don't have direct access to the downstairs switch, have to wait for my buddy to get home from work. There was a yellow light on one of the ports last time I looked at it (10Mbit?), I haven't verified if that is the same cable that is running upstairs or not.
But would two switches have different ideas about the link speed on the same connection? Is that possible?
What is happening now is very similar to what was happening before when the 10Mbit hub downstairs failed. But the new switch is a Dlink, is it possible for a switch to fail in less than six months? I could try replacing the switch (again), it would be the simplest fix, but I'm still iffy about whether or not the cable running upstairs to downstairs is capable of handling a stable 100Mbit connection.
Last edited:
Facebook
Twitter