Problem by traffic through switches

[kobraevents]

the following structure:
ENC-----Managed Switch------ENC ->No Connection between devices
ENC-----Unmanged Switch------ENC ->Connection between devices

i use the libs with an ESP32 devkit

I have TP-Link and Netgear as Gigabit switches and two Fritzboxes. Everything runs stable for several days. Now the setup should change to its natural environment. This has a manageable Swtich for the purpose of Vlans. Nothing works anymore. I have several Linksys LGS310, HP, 3Com running here. PC, Internet, printer etc. runs over the switches without problems. I have also enabled all ports for UDP/TCP in the switches and set the ports to 10base/full or half. no change.
Tried ten times different ports without success. Also changed my code that actual sends and received udp traffic in server/client structure without any luck.

The helps in the internet do not bring me further:

• 100 to 120ohm between pin 1/2, 3/6.
• change to 10base full
• crossover cable

Also on the HP switch, Microsnes, Linksys or Cisco nothing works. I am at a loss. but the switches shows that there is traffic on the ports. Even on the old router, which can only handle 100base-t, the udp connection works.

[JAndrassy]

try with changes from this commit reverted 9f3d44d

[kobraevents]

please give me instructions, what should i do with these?
just download and replace in the lib folder?

[JAndrassy]

edit your copy to the left/red version

[cavbor]

There is a problem with the traffic between the networks. There are no problems in the UIPEthernet library.

Laptop with Wireshark
172.16.100.20/28 ----------------------------------------------------
7c:8a:e1:14:82:ec |

Arduino Uno w NIC W5100____________________________________Router Mikrotik___________________________________________Laptop
172.16.100.19/28 ------------------------ 172.16.100.17/28 Bridge (eth2, eth3, eth4, eth5 ), 10.10.10.1/24 Eth1 ----- 10.10.10.10/24
de:10:e1:9c:01:01
|
Arduino Nano w NIC ENC28J60
172.16.100.18/28 ---------------------------------------------------
de:10:e1:01:9c:9c

Arduino with the EthernetENC library does not respond to PING and other requests between networks.
The laptop 172.16.100.20/28 freely pings Arduino Uno w NIC W5100 and Arduino Nano w NIC ENC28J60.
Laptop 10.10.10.10/24 can only ping Arduino Uno, Arduino Nano does not respond to ping.