ASUS – DSL-AC88U / DSL-AC3100 Firmwares (beta's) etc. Looks like a new Beta Release for the DSL-AC88U is available, this version has Telnet enabled and improved 2.4GHz wifi (I believe). DSL-AC88U_v9.10.06_build581_debug.w.zip https://www.asuswebstorage.com/navigate/s/604D61534F2541D1B3CE1CC031A697E4Y UK Sentinel In a completely...

[UK Sentinel]

UK Sentinel wrote:

jetspeed wrote:

Does anyone know if IPv6 ICMP messages are filtered by 88U or allowed to pass (as recommended)?

I will ask for clarity from ASUS

Alas I have chased ASUS, but as yet have no reply, maybe best (quicker) to try a little test yourself.

ICMP Echo/Echo Reply should work from

LAN to LAN

LAN to WAN,

and LAN to WAN to LAN

but not WAN to LAN unless you change an option in the Firewall configuration Settings. Unsure if last option is yet available via ASUS DSL-AC88U.

If you network setup allows DNS, then on a Windows PC, go to CMD prompt and type

Ping (www.bbc.co.uk) (remove brackets) and I think bbc.co.uk supports IPV6, or will tunnel it.

and if you get a return then you know ICMP is allowed from LAN to WAN

Likewise, if you know another PC IP address on LAN, then simple ping that IP address

Hopefully that should be enough to see if IPv6 ICMP is working and DNS is set-up correctly ;-)

 

 

Attachments:

1. 

   icmp-echo-example.gif
   

In a completely sane world, madness is the only freedom (J.G.Ballard).

You need to login in order to vote

[jetspeed]

UK Sentinel wrote:

but not WAN to LAN unless you change an option in the Firewall configuration Settings. Unsure if last option is yet available via ASUS DSL-AC88U.

Yes, this is what my original question pertains to. I don’t see anything in the firewall configuration.

If anyone could run https://ipv6-test.com/ and report back if they are also having ICMP being filtered.

You need to login in order to vote

[SH]

which device your running test ?

i used to have this issue in past on windows where windows firewall was blocking IPv6 ICMP Echo Request  , you can try this command ….run as admin ………….. and see if works …

netsh advfirewall firewall add rule name=”ICMPv6 echo request” protocol=icmpv6:8,any dir=in action=allow

You need to login in order to vote

[jetspeed]

SH wrote:

which device your running test ?

It fails on Windows 10 and other devices (e.g. iPad).

I already had the firewall rule enabled, hence my question about whether it was working properly on the 88U.

Is the IPv6 ICMP test working for you?

You need to login in order to vote

[SH]

I apologize.. i don’t own DSL-88U, but have other ASUS routers

No , i have IPv6 disabled , when i had it enabled … i used to have issue with slow browsing …even if IPv6 ICMP was reachable …….

you can try testing by disabling  IPv6 Firewall + allow Respond ICMP Echo (ping) Request from WAN and see if it works …………… but most likely it’s Asus firmware filtering it

i would like to ask @UK Sentinel …. is there any way to configure IPv6 MTU in GUI ? or what is the default value used for IPv6 MTU on ASUS router ?  because some IPv6 test site show Packet too Big.

Attachments:

1. 

   ipv6.png
   

You need to login in order to vote

[UK Sentinel]

A two part response ;-)

I cannot recall what ASUS router you have, but should be able to change MTU value by…..

• Click [WAN].
• Select [PPPoE] under the path below: Internet Connection >> Basic Config >> WAN Connection Type.
• You can change the value of MTU(Maximum Transmission Unit) under Account Setting.

IPv6 MTU size is very specific to your setup i.e  if you are running an IPv6/IPv4 DualStack, ISP requirements (6in4 encapsulation) etc. I know ASUS used to default to 1300 MTU but believe MTU is now around 1492 for IPv6.

BTW – All IPv6 networks must support an MTU size of 1280 bytes or greater (RFC 2460) and when RFC 8200 came out the same MTU value 1280 remained (I believe) .  tweaking is strongly advised if you are experiencing problems with certain websites/connections etc.  1500 is considered most efficient but in reality a lower value is advisable.

Let us know what ASUS router you have and what your MTU is set at when you next decide to see (test) if IPv6 works for you?

 

 

 

 

Attachments:

1. 

   MTU.png
   

In a completely sane world, madness is the only freedom (J.G.Ballard).

You need to login in order to vote

[SH]

I know about PPPoE , but when you use Static IP there is no option to configure MTU or MRU ( default should be 1500 when static ip is set )

default MTU used on ISP Modem for IPv6 is 1472 …, that’s why i was asking if there is any way to optimize IPv6 MTU .

i wonder if ASUS could add this option to change MTU value in IPv6 settings in future ?

i got AX-88U

You need to login in order to vote

[UK Sentinel]

What modem/fibre box is your AX-88U connected to ?

Edit: I see ‘Static IP’ Stock ASUSWRT does not and most likely never will offer this option, RMerlin (ASUSWRT-Merlin) does offer this and mine (RT-AC86U – ASUSWRT-Merlin) is set to 1500 also for Static or Dynamic IP running a dual ipv4 /v6 stack ;-)

or via Telnet/SSH try the cmd  ( ifconfig eth0 mtu 1472 ) remove brackets and see if this helps ? a reboot will remove this value, but good for testing on standard ASUSWRT.

Or if you are you getting fragmentation try the following from PC:

ping [site] -f -l 1472 and change value until you stop receiving the Fragmentation error message

(then add + 28 for final MTU Value for PPPoE Connection on router).

 

Hopefully CMDs will work but ASUSWRT underlying language is always changing between models ;-(

 

 

https://asuswrt.lostrealm.ca

In a completely sane world, madness is the only freedom (J.G.Ballard).

You need to login in order to vote

[SH]

UK Sentinel wrote:

What modem/fibre box is your AX-88U connected to ? Edit: I see ‘Static IP’ Stock ASUSWRT does not and most likely never will offer this option, RMerlin (ASUSWRT-Merlin) does offer this and mine (RT-AC86U – ASUSWRT-Merlin) is set to 1500 also for Static or Dynamic IP running a dual ipv4 /v6 stack 😉 or via Telnet/SSH try the cmd ( ifconfig eth0 mtu 1472 ) remove brackets and see if this helps ? a reboot will remove this value, but good for testing on standard ASUSWRT. Or if you are you getting fragmentation try the following from PC: ping [site] -f -l 1472 and change value until you stop receiving the Fragmentation error message (then add + 28 for final MTU Value for PPPoE Connection on router). Hopefully CMDs will work but ASUSWRT underlying language is always changing between models ;-( https://asuswrt.lostrealm.ca

Hey Thank’s , I’m trying ASUSWRT-Merlin Firmware ………………. lets see how its goes ……

You need to login in order to vote

[CjdBZTaLnYWhJLT]

some suggest for setting qos for optimize adsl bufferbloat?

Liked by:

You need to login in order to vote

[pavlf]

Can’t help with the query, sorry.

However, I’ve left Schrodinger’s router to its own devices for a while and suddenly it’s at 100 days with only 47% RAM used. Everything works, or at least everything I’ve turned on. The thing that I think has made the most difference and which has seemed to stop things going wrong has been to turn off the vpn. With that off I’ve had no problems, up to ten devices connected to both 2.4 and 5ghz, two drives attached to USB, streaming hi-def music through the USB 3.0 & up to 20 torrents running through the USB 2.0. I suppose I’m not asking anything highly technical of it, but for my purposes it’s doing fine for the moment.

 

You need to login in order to vote

[Mrk26]

Hello to All,

Fresh on this forum and also my first post.

I read this thread and against all this information I bough Asus DSL-AC88U as I was really impressed with my previous Asus router RT-AC68U.

On 88u the WiFi signal is definitely much better on my pc I gto Asus wifi card which allow for 1.3 Gb/s between pc and modem which is better than previous router where speed wasn’t even constant (same house and same configuration). While I can’t complain about 5 GHz network I have issues with 2.4 Ghz network, I was fighting for last few days and can’t get decent performance on it. Most stuff I turned off already (as suggested in this thread) and still when I do speed test on 2.4 Ghz it’s lot lower than on 5G, any tips on this?

Another thing is that when I switch from bt openreach modem to Asus for some reason I can see a lot of FEC errors at this time when Vdsl connection is up and running for 5 days 8h 30 min I have 7404781 Fec errors which I believe (by reading on different formu may delay positive action taken by DLM). I found a way to reduce these errors but to experiment I need fw with telnet option enabled. I asked Asus about this fw by feedback form through modem but so far after over a week there is no any response from them.

To @sentinel uk

Are you able to source latest fw ( I currently use v1.10.06 build591) with unlocked telnet.

You need to login in order to vote

[UK Sentinel]

Welcome, On paper the DSl-AC88U should perform very well and I know next month (hopefully) ASUS are planning a new firmware release.

I will drop ASUS an email and see if they are still able to release unlocked version  for DSL-AC88U owners

Regarding

BTW  – Which BT OpenReach Modem do you have ? and can you screen dump and show us your DSL log and General log page, so we can have a look

Edit: what are your current 2.4Ghz and 5Ghz speeds your are achieving?

 

 

In a completely sane world, madness is the only freedom (J.G.Ballard).

You need to login in order to vote

[Mrk26]

I have ECI modem unlocked ( I know is different chipset but still nothing to compare from this what I remember on ECI I see maximum 140k in over a week time) but at the moment is on holiday in cupboard :) as asus is on duty now ;)

I can attache screen from asus, where you can see that is sync really good (lot better than eci) but still I’m on interleave and with amount of fec errors I’m far away from getting better.

Attachments:

1. 

   Screenshot_2019-08-08-20-28-56.png
   

You need to login in order to vote

[UK Sentinel]

Your Exchange is Infineon (Lantiq) and the unlocked ECI modem is also Infineon (Lantiq) so this matched chipsets are perfect for each other.

As you exchange is Infineon, you will not get G.inp and others I have seen also seem to have a high level of interleaving due to Infineon Exchange and distance from Exchange/Cabinet.

I am yet to see a DSl-AC88U connecting to a Infineon Exchange/Cabinet on Fastpath in the UK ? but your synch speeds considering are relatively good.

yes FEC are high, did the ECI modem show the same FEC errors ?

 

In a completely sane world, madness is the only freedom (J.G.Ballard).

You need to login in order to vote

[Author]

Posts