BBS:      TELESC.NET.BR
Assunto:  Uodate on PI wifi bridging issues.
De:       The Natural Philosopher
Data:     Wed, 4 Feb 2026 12:19:07 +0000
-----------------------------------------------------------
If you remember I had constricted a bridge from wifi to ethernet to act 
as a bridged access point. On a PI 4B as a test platform

The problem was that whilst the bridge was reasonably OK accessing my 
LAN, up to 90% packet loss was experienced when accessing the internet 
via my edge router.

Two further points have been established but the exact reason for the 
behaviour still remains a mystery

1/. A friend with a Pi 5 attempted to duplicate the setup, could not get 
it to work and instead used the Network Manager  GUI to set up  a 
(routed?) access point which worked ok. It turns out that you cannot use 
the GUI tool to set up a bridge at all. Only nmcli.

2/. After a long time with traceroutes and pings I realised that this 
particular machine was the *only one wired directly to the router via a 
single gigabit Ethernet cable*. Everything else went via an ancient 
100Mbps switch that I inherited from an office clearout. In a rash of 
'well I tried everything else' I unplugged the Pi from the Gigabit 
router socket  and put it into the 100Mbps switch and bingo!... Pretty 
decent internet performance. Yes extremely long transfers sometimes 
fail, but its very useable

What I cannot for the life of me understand is *why*  this worked. The 
same [Gigabit] link was involved in both local and Internet access.  The 
only difference being that local access ALSO went through a 100Mbps switch.

If anyone can shed light on this I would appreciate it.

If it matters, the router is a Draytek Vigor2762Vac running PPPoE via an 
Openrach ONT to an optical fibre for Internet and thence to the ISP.

-- 
Socialism is the philosophy of failure, the creed of ignorance and the 
gospel of envy.

Its inherent virtue is the equal sharing of misery.

Winston Churchill


--- PyGate Linux v1.5.11
 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

-----------------------------------------------------------
[Voltar]