Martin Johnson wrote:
> - Draytek Vigor 120 ADSL modem.  Good and stable, even on my marginal DSL 
> line, and seems to support all the latest DSL standards.

I concur.

The Draytek is a standalone media converter (supporting ADSL2+ and 
10/100bT ethernet), have used it in the UK with ISPs that:
  * Are based on BTs wholesale service and require PPPoE to access WAN.
  * Are based on LLU (local loop unbundling initiative in the UK) and 
uses the Vigor 110/120/1x0 in "bridged" mode, i.e. there is no PPPoE in use.

My only gripe with the unit is that it doesn't support baby-jumbo 
ethernet packets (allowing 1500(payload bytes) + 14(mac/pid bytes) + 2 
(CRC bytes) plus the 4 or so bytes of PPPoE overhead).  I'm sure the 
Ethernet controller they have on board can do it, so it is a firmware 
issue and a basic lack of understanding by the designers about this issue.

The reason for this request is that the PPPoE (when PPPoE is being used 
requires extra few bytes of overhead to a traditional ethernet frame, 
this means the effective MTU is reduced and you end up with issues 
around packet fragmentation, TCP MSS clamping and other such nonsense.

I use the draytek's telnet based management, I'm not sure the units I 
have support HTTP (since I have model 110 not 120), since there are only 
about a dozen options I can set and only about 5 that ever need changing 
(if at all!)


For the record, I'm not aware of any other media converter on the market 
that "gets it" either; when it comes to this baby-jumbo ethernet packets 
over 100bT issue and PPPoE.  So excuse my rant on that point here.


Darryl
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