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FS#2836 - MT7620 switch VLAN limitation #7627

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openwrt-bot opened this issue Feb 16, 2020 · 2 comments
Open

FS#2836 - MT7620 switch VLAN limitation #7627

openwrt-bot opened this issue Feb 16, 2020 · 2 comments
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matrex:

Device:
D-Link DWR-118 A2

Software versions:
r12203-766e778226

Using the web interface kept adding and deleting VLANs. Ended up with 15 of these lines in /etc/config/network:
option vlan X
where X was: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 16, 17
There is no 7 and 9.
The last VLAN did not work (packets arriving on that VLAN were dropped).

I have found a manual at http://download.villagetelco.org/hardware/MT7620/MT7620_ProgrammingGuide.pdf on page 237 it states that 16 VLAN id-s are supported.

Editing the "networks" in /etc/config to change 17 to 7 fixed the issue.
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por:

Explicitly setting option vid for a vlan might do the trick as well.

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matrex:

The VLANs are set according to requirement with vid option. These were set between 1 and 127.
These were not changed. The issue is that using Luci web interface the user ends up with a configuration that does not work. What does not work is having an option vlan 17, even though there are only 15 defined.
The change to fix it had to be done by editing a file. And without the chip specification the user would not even guess that 16 is the max number for vlan option when looking at the file.

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