Any advice for PPPoE setting on a Draytek 2820...

jm_paulin · Apr 11, 2011, 11:09:41

So I go WAN2,

PPPoE TAB:
- ISP Access Setup: use my DSL username and password
- WAN Connection Detection: ARP Detect (or Ping Detect)
- PPP Autentication: PAP or CHAP ?
- MTU 1492 (that is standard for PPPoE, right ?)

Static or Dynamic address tab:
- I go static, and fill in the IP details I received. Should not have any surprises, right? Can I trust IDNet DNS or shall I stick with OpenDNS?

PPTP/L2TP tab:
- I suspect disabled (please tell me this is true).

I run my CAT6 cable (straight cable, not a cross-over) from the WAN2 port of my draytek to the expected location of the modem, and that should be it, right?

esh · Apr 13, 2011, 10:27:17

CHAP with 1492 is right. PPTP I believe is for VPN setups. I have just set mine to get the IP from the ISP, but I imagine it's not a problem going static. Looks like you are good to go.

jameshurrell · Apr 13, 2011, 21:26:05

I manage a 2910 at a client (2 WAN ports, no ADSL modem) - so similar. I run 2x 2 Wire HGV 2700 in front to do the ADSL modem work - both lines are above 60db.

I set WAN1 and WAN2 to use PPPoE as in the attached screenshot, which is similar if not identical to the 2820 I thinl.

Basically I change nothing apart from:

Username
Password

Note that both lines have fixed IP addresses, but I leave the Draytek set to "Dynamic".
Maybe of some use.

jm_paulin · Apr 15, 2011, 08:34:11

Looks the same as 2820. I am surprised by the choice of MTU... any reasons?

JM

jameshurrell · Apr 15, 2011, 10:00:57

That's the default on the 2910.

It works and I don't have users complaining (at the moment)...

jm_paulin · Apr 20, 2011, 12:06:45

All setup, via the draytek 2820 using default settings as suggested.

Not bad at all!

-JM

jm_paulin · Apr 20, 2011, 20:03:22

Do you guys reckon I should change the MTU on my Windows 7 desktop?

jameshurrell · Apr 20, 2011, 21:20:40

Quote from: jm_paulin on Apr 20, 2011, 12:06:45
All setup, via the draytek 2820 using default settings as suggested.

Not bad at all!

-JM

Not at all shabby!!! Well done...

Ref. MTU... I've never bothered at all on any PCs... I manage a network of 10 Windows machines, and they are all at default settings.... Seems to work!! If you're prepared to experiment, I guess it might be worth a go...

jm_paulin · Apr 21, 2011, 06:46:48

So I played a bit with MTU...

with the default 1500, here is what I get to yahoo:

ping www.yahoo.co.uk -f -l 1464
Pinging any-rc.a01.yahoodns.net [77.238.178.122] with 1464 bytes of data:
Reply from 77.238.178.122: bytes=1464 time=23ms TTL=57
Reply from 77.238.178.122: bytes=1464 time=20ms TTL=57
Reply from 77.238.178.122: bytes=1464 time=23ms TTL=57
Reply from 77.238.178.122: bytes=1464 time=20ms TTL=57

ping www.yahoo.co.uk -f -l 1468
Pinging any-rc.a01.yahoodns.net [77.238.178.122] with 1468 bytes of data:
Reply from 77.238.178.122: bytes=1468 time=27ms TTL=57
Reply from 77.238.178.122: bytes=1468 time=28ms TTL=57
Reply from 77.238.178.122: bytes=1468 time=28ms TTL=57
Reply from 77.238.178.122: bytes=1468 time=27ms TTL=57

However, ping www.yahoo.co.uk -f -l 1470 just hangs.

So I guess MTU matters a bit. I changed the MTU on my windows client using the command:
netsh interface ipv4 set subinterface "Local Area Connection" mtu=1492 store=persistent

However, that change did not translate into anything noticeable with speedtest. Still at:

I'll leave it at 1492 for now, but I am still clueless...