Switch adds 1000ms ping delay

[AthanasiosPanagiotidis09431]

This is my setup: router>RE355 extender>Ethernet switch>2PCs

My old switch(TP-LINK TL-SF1005D) works fine, but my new cisco switch(sg110d-05) has incredibly high ping latency when the RE355 extender is connected on it, as shown in the picture attached.

If I remove the RE355 extender, both switches have no ping delay on the same test when connected to the router directly. The  RE355 by itself, or when connected to the old switch, also has no delay on the same test.

When pinging between the 2 PCs with ip4 I have no delays.

The delay is only towards internet servers as shown in the picture attached.

The orange line is the new cisco switch, the black line is the old switch.

Any idea what might be wrong? I appreciate any help.

Thank you,

Athanasios

[Georg Pauwen]

Hello,

the SG100D-05 is an unmanaged switch, so there is not much you can configure. The RE-355 and the TP-LINK TL-SF1005D are both from the same manufacturer...what brand/model is the router ?

[AthanasiosPanagiotidis09431]

Indeed.

My router is ZTE Home Gateway ZXHN H267N