NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
GS324T will not reliably connect to 10/100 devices
The GS324T switch will not reliably connect to 10/100 devices. I have a few such devices - some will negotiate a connection, others will not. No problems are observed with the same 10/100 devices and a GS308T switch.
This problem has been observed before:
The problem (for me) seems to be related to the switch's "green" features - if a port's Auto power down and EEE modes are disabled, 10/100 devices will consistently connect without issue (to that port). This is only a workaround and I hope Netgear will fix the underlying problem.
I am using FW 1.0.0.38
2 Replies
Welcome to the community! :)
I suggest you to set up port mirroring on your GS324T switch. Select a port(s) as a source port(s) on the GS324TP where the device(s) that supports 10/100Mbps of ethernet connection is directly connected. Then, select another port as a destination port on the GS324TP where a PC (with Wireshark installed in it) is directly connected. Run Wireshark until the issue occurs. It would be best that Wireshark would capture the packets in the event the issue happens.
Kindly read page 319-321 of the GS324T user manual here on how to set up port mirroring. You can download Wireshark on this link. As reference guide, check this link I found online on how to use Wireshark.
For the captured packets to be analyzed, kindly open a support ticket with NETGEAR Support here and provide a description of your concern. Then, attach the captured packets from Wireshark on the support ticket you have opened for it to be analyzed by the NETGEAR Support Team.
Regards,
DaneA
NETGEAR Community Team
My 90 day support has expired so pursuring this will via a support ticket will cost $, I think. Still, I did more testing using the method you suggested and will post the results here:
One problem device is a 100-base T printer - a Samsung M2885FW setup to obtain an IP address via DHCP. If "EEE Mode" on the switch is enabled for the port the printer is connected to, a successsful DHCP transaction will not occur. If EEE Mode is disabled, then enabling/disabling Auto Power Down Mode for that port will consistently work. i.e. of the 2 power saving modes for a port only EEE Mode causes a problem.
With tx/rx port mirroring for the printer port enabled here is a DHCP transaction (EEE mode is enabled, so this will fail)
No. Time Source Destination Protocol Length Info 7 3.497810994 SamsungE_3e:15:ef Broadcast ARP 60 Who has 10.10.42.1? Tell 169.254.135.40 8 3.497811345 eacAUTOM_12:19:95 SamsungE_3e:15:ef ARP 60 10.10.42.1 is at 00:e0:67:12:19:95 9 3.958931977 0.0.0.0 255.255.255.255 DHCP 354 DHCP Discover - Transaction ID 0x1dab 10 3.960882244 10.10.42.1 255.255.255.255 DHCP 346 DHCP Offer - Transaction ID 0x1dab 11 3.965289200 10.10.42.1 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0x1dab 14 7.959388325 0.0.0.0 255.255.255.255 DHCP 354 DHCP Discover - Transaction ID 0x3525 15 7.960611275 10.10.42.1 255.255.255.255 DHCP 346 DHCP Offer - Transaction ID 0x3525 16 7.965306344 10.10.42.1 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0x3525 18 8.498296437 SamsungE_3e:15:ef Broadcast ARP 60 Who has 10.10.42.1? Tell 169.254.135.40 19 8.498296838 eacAUTOM_12:19:95 SamsungE_3e:15:ef ARP 60 10.10.42.1 is at 00:e0:67:12:19:95
and with EEE mode disabled - this will work:
No. Time Source Destination Protocol Length Info 7 3.653954235 0.0.0.0 255.255.255.255 DHCP 354 DHCP Discover - Transaction ID 0x5f4d 8 3.655819675 10.10.42.1 255.255.255.255 DHCP 346 DHCP Offer - Transaction ID 0x5f4d 9 3.657221518 0.0.0.0 255.255.255.255 DHCP 360 DHCP Request - Transaction ID 0x73ae 10 3.660340135 10.10.42.1 255.255.255.255 DHCP 342 DHCP Offer - Transaction ID 0x5f4d 11 3.665463593 10.10.42.1 255.255.255.255 DHCP 346 DHCP ACK - Transaction ID 0x73ae 12 3.666261379 SamsungE_3e:15:ef Broadcast ARP 60 ARP Announcement for 10.10.42.11 13 3.670459768 10.10.42.1 255.255.255.255 DHCP 342 DHCP ACK - Transaction ID 0x73ae
10.10.42.1 is the DHCP server that will hand out 10.10.42.11 to the printer if DHCP is successful.
Futhermore, if EEE mode is disabled and an IP is aquired, then EEE mode enabled on the printer port, further communication to the printer will fail.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
