Does HomeMax support PPPoE?

[netgem21]

If not, how do I get the D-Link DGL-4300 router working as it only supports PPPoE and static.

I'm pretty new to all of this

thanks


netgem21

[Alex]

Check on D-links website to see if there is an updated driver

[siege2]

http://support.dlink.com/products/view.asp?productid=DGL%2D4300

[siege2]

 dont you originally mean,

Does HomeMax support PPPoA?

anyhows the manually is 74 pages long.......

[Rik]

I had a look at the quick install & user manual online,  and they both refer only to PPoE. I'd give the UK operation a call to see whether the router is suitable for UK use, 020 8955 9000. It would seem odd to sell a router that was only PPoE in the UK though.

[siege2]

agree

[Rik]

I wonder whether they've rushed it to market, without creating a UK-specific firmware or documentation. The latter is definitely American, so it's always possible that the UK office can sort this out for netgem. I'll be interested to know, as I like the idea of a gigabit router...

[siege2]

More bad news forn www.dlink.co.uk

http://www.dlink.co.uk/?go=gNTyP9CgrdZMIC4AStFCF834mptYLuJVQdyifLbjklvsVIx9

Your selected product has been discontinued

[Rik]

It would be interesting to know why they dropped it, it seemed like it was quite a recent item.

[Adam]

PPPoE routers which are RFC compliant are supported on BT IPStream products. However, the BT SIN document does note that most consumer routers are not RFC compliant. It is still worth giving it a try.

It is also worth pointing out that using PPPoE will incur a higher protocol overhead so throughput will be lower than the use of PPPoA.

Adam

[Rik]

If you have the time to explain how that works, Adam, I'd be interested to learn a bit more about it.

Could it explain the posts I've seen in various places about people only being able to get their routers to work if they selected PPPoE?

Always curious. 

[Adam]

From the BT SIN:

PPPoE offered as part of the BT IPstream service is PPPoE over ATM; i.e. an ATM PVC between the End User and RAS, so there is no shared broadcast domain with other End Users on the BT IPstream Platform. With PPPoE the Maximum Transmission Unit (MTU) is 1492 bytes (i.e. the 1500 byte maximum data size of Ethernet less the PPP header overhead).

Customers allowing the use of PPPoE should be aware there is potential for some PPPoE traffic to be discarded (so called "black-holing" - see RFC2923[16] Section 2.1 for further information). In brief: there are servers on the Internet that send out 1500 byte UDP packets with the "don't fragment" bit set. MTU discovery does not work well across the Internet as these servers are often behind firewalls that block ICMP and therefore prevent the MTU discovery process from working. In this case, packets larger than 1492 bytes will not meet the PPPoE MTU requirements and so will be discarded. This is not an issue for UDP packets of 1492 bytes or below. This may not be an issue for TCP as the MSS negotiation should ensure packets are small enough.

Adam

[Rik]

Thanks, Adam, I understood some of it.

I suppose that's why some routers default their MTU to 1492? I'd often wondered where that figure came from.