NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
sascha_52
Apr 03, 2022Aspirant
GS308E Access Management Site
Hello, I currently used two GS305e at different locations at home. Between the switches I used a trunc-connection with VLAN 101 (192.168.2.0/24) and VLAN 200 (192.168.10.0/24) on Port 5. Port 5 i...
waxar
Jul 08, 2022Tutor
That is beyond ridiculous... So they're saying that the chip supports tagging all other traffic, but is unable to tag its own? And what about the second issue when the replies are broadcast on all ports? Is it another "hardware limitation"? I think I'm done with Netgear...
schumaku
Jul 08, 2022Guru - Experienced User
waxar wrote:
That is beyond ridiculous... So they're saying that the chip supports tagging all other traffic, but is unable to tag its own?
Reality is: These are making use of configurable switch chips.
waxar wrote: I think I'm done with Netgear...
These re indeed chipset limitations, several vendors offer the almost exact same devices and the similar variance, some direct chipset related, some related to the earlier mentioned microcontroller implementation.
If you expect strict managed VLAN, buy switches supporting this.
- waxarJul 08, 2022Tutor
schumaku I guess this is what happens when millennials are in charge of writing firmware. And you once again avoided addressing the second issue - broadcasting management traffic on all ports - which is much more severe than the first one.
- schumakuJul 08, 2022Guru - Experienced User
This could even be microcode issue on that switch chip. The firmware people (which just set some bits to the behavior of the switch like on an embedded device don't have control over it. To what I can see, the switch code is not a loaded module, probably burned-in with the manufacturing.
Please understand I'm not Netgear, just yet another user, and are not very keen buying hardware (this GS3x series if for certain specific sales channels) just for reproducing each and every potential nicely reported issue.
- waxarJul 08, 2022Tutor
I'm a network software engineer. I also write firmware for microcontrollers.
schumaku wrote:This could even be microcode issue on that switch chip. The firmware people (which just set some bits to the behavior of the switch like on an embedded device don't have control over it. To what I can see, the switch code is not a loaded module, probably burned-in with the manufacturing.
It's hard to make any assumptions without knowing what exact switch chip is used in the GS308E, but according to this video https://youtu.be/HuQ3iv4iLbw?t=322 it's clearly seen that the GS108 (a simple unmanaged switch) uses Broadcom BCM53118. According to the chip's description (https://html.alldatasheet.com/html-pdf/1074559/BOARDCOM/BCM53118/448/1/BCM53118.html) this switch chip is highly versatile, supports VLAN tagging and has one GMII/RGMII interface along with 10/100/1000 MAC for connection with a CPU or a wireless/DLS/cable router chip. That interface is obviously not used in the GS108 due to its unmanaged nature. Thinking that the chip can't tag/untag traffic received/sent on that internal interface renders it absolutely useless for what it's designed for.
Simple logic leads me to a conclusion that something clearly more advanced like the GS308E uses at least something similar as a switch controller partly because the GS108 does not even use managed capabilities of its own chip. It's hard to believe that the GS308E uses an inferior chip provided it needs a CPU for management tasks.
Related Content
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!