Thanks Lonnie
I will test it out.
Regards
Michael Knill
On 26/6/20, 12:20 pm, "Lonnie Abelbeck" <li...@lonnie.abelbeck.com> wrote:
Hi Michael,
Looking at the code, to make the MTU stick would require some script
changes, but you could test...
After boot edit /tmp/etc/ppp/pppoe.conf
You should see something like:
PPPD_EXTRA="persist maxfail 0"
You should be able to add pppd options to that, something like:
PPPD_EXTRA="persist maxfail 0 mtu 1452 mru 1452"
(Or try 1460)
Then restart PPPoE.
(Note 1452 is 1412+40)
If that works we could add a rc.conf variable to add the mtu/mru options.
Lonnie
> On Jun 25, 2020, at 8:56 PM, Michael Knill
<michael.kn...@ipcsolutions.com.au> wrote:
>
> Thanks Lonnie
>
> Hmm MSS should be fine then assuming it is working.
> I will do some more testing on the new service in my home office.
Unfortunately the one not working is a building site and its way too cold at
the moment.
>
> Regards
> Michael Knill
>
> On 26/6/20, 11:45 am, "Lonnie Abelbeck" <li...@lonnie.abelbeck.com> wrote:
>
>
>
>> On Jun 25, 2020, at 8:05 PM, Michael Knill
<michael.kn...@ipcsolutions.com.au> wrote:
>>
>> Hi Group
>>
>> I have changed my internet provider and I am having connectivity
problems to some sites on Astlinux.
>> I am fairly certain that it is an MTU/MSS issue as I have fixed it on my
Mikrotik router by adjusting this value.
>> Funny that I'm having problems with this provider but not on my previous
provider. Both are using PPPoE and I tested that the maximum MTU for both is
1464 e.g.
>>
>> 3035-JSainsbury-CM1 kd # fping -M -b 1465 12000.ipcaccess.net
>> 12000.ipcaccess.net: error while sending ping: Message too long
>> 3035-JSainsbury-CM1 kd # fping -M -b 1464 12000.ipcaccess.net
>> 12000.ipcaccess.net is alive
>>
>> 3076-VisionCF-CM1 kd # fping -M -b 1465 12000.ipcaccess.net
>> 12000.ipcaccess.net: error while sending ping: Message too long
>> 3076-VisionCF-CM1 kd # fping -M -b 1464 12000.ipcaccess.net
>> 12000.ipcaccess.net is alive
>>
>> Maybe my new provider is not allowing fragmentation?
>>
>> Anyway just wondering how I fix this problem. Do I just set MTU using
IFMTU in user.conf? E.g.
>> IFMTU=ppp0:1460
>
> No, per the /stat/etc/rc.conf file:
> --
> ## MTU Changes
> ## If you need to specifically set the MTU for a given interface, do
that here.
> ## You can try to set the MTU for any valid type of interface. With
ethernet it
> ## works most of the time. Everything else, caveat emptor...
> ## If you are using PPPoE don't worry. We automatically handle those
MTU issues
> #IFMTU="eth2.41:1496 eth0:1492"
> --
>
> I don't see any configuration for the PPPoE MTU, though there may be a
way.
>
> What is the local MTU set to by default ?
> --
> ip link show dev ppp0
> --
>
> After the PPPoE link is up you could try to change it:
> --
> ip link set dev ppp0 mtu 1460
> --
>
> If that works we can try to figure out how to make that stick.
>
>
>> Can I set the TCP MSS anywhere?
>
> This is the current value hardcoded in the PPPoE config:
>
> CLAMPMSS=1412
> -- PPPoE docs --
> CLAMPMSS
> The value at which to "clamp" the advertised MSS for TCP sessions. The
default of 1412 should be fine.
> --
>
> Lonnie
>
>
>
>
>
>>
>> Regards
>> Michael Knill
>> _______________________________________________
>> Astlinux-users mailing list
>> Astlinux-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/astlinux-users
>>
>> Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
>
>
>
> _______________________________________________
> Astlinux-users mailing list
> Astlinux-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/astlinux-users
>
> Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
>
>
> _______________________________________________
> Astlinux-users mailing list
> Astlinux-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/astlinux-users
>
> Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
_______________________________________________
Astlinux-users mailing list
Astlinux-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/astlinux-users
Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
_______________________________________________
Astlinux-users mailing list
Astlinux-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/astlinux-users
Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
