menu

arrow_back What prevents the switch from responding to tracert?

by
1 vote
Hello, everyone!

There is a funny situation going on with one of the switches. To be more precise, not one of them, but the central one.
The DELL PowerConnect 7024 switch is also a network router.

If it is pinged, everything is fine:
5f293d51df342542397529.jpeg


And if I do a trace, it doesn't respond:
5f293d85624ab098672060.jpeg

Sometimes when tracing answers from it appear, but very rarely.

I have already broken my brain, I can not understand what this could be connected, especially since initially he always answered when trasert. At what point and when it could start - do not know.
Nothing unusual in the logs, the usual authorization marks.

3 Comments

Ask a question to tech support. it's interesting even...
Ruslan-Strannik , no. At least I did not set them up and initially everything was fine.
Incoming ICMP packets are dropped.
do you have filter rules on it?

2 Answers

by
0 votes
Since ICMP is handled exclusively by CPU, sometimes devices drop extra ICMP to avoid unnecessary load. On a number of devices, the minimum allowed number of such packets is written in the code and is not configurable in any way.

1 comment

I read about it, but the strange thing is that I did the tests at night, when no one was working, disconnected unnecessary ports... It didn't work.
by
0 votes
it seems to be about the icmp type ( ping-test.ru/icmp )