Hello friends.
I’m sorry that my English is not perfect.
If this post is in the wrong category, please move it.
Ipfire upgraded or fresh installation of 154 or 154 Repository testing - same symptoms.
My ISP connection - download up to 500Mb/s , upload up to 30Mb/s
via modem Connect Box CH7465LG-LC
The modem has two operating modes - router mode and modem mode (bridge).
My IPFire Fireinfo https://fireinfo.ipfire.org/profile/47c56029f9c77915d42580570346e9f509ba42de
When ipfire is connected “directly” via modem mode,
download is about 220Mb/s , upload is about 30Mb/s.
(INTERNET–modem–dynamic public IP on RED–ipfire–GREEN with private IP 10.10.10.0/24)
When ipfire is connected behind modem in router mode,
download is about 500Mb/s, not less than 400Mb/s , upload is about 30Mb/s
(INTERNET—–dynamic public IP on WAN–modem in router mode–LAN with private IP 192.168.100.1/24–dynamic private IP on RED–ipfire–GREEN with private IP 10.10.10.0/24)
minitests
-swapping MAC addresses (RED GREEN) does not change anything
-laptop, connected “directly” via modem mode - download is about 500Mb/s
-laptop, with MAC from RED ipfire (LocallyAdministredAddress)
connected “directly” via modem mode - download is about 500Mb/s
I’m afraid I don’t understand that
(is it a bug or a feature… )
Sounds like the MTU setting is not configured.
Maybe try setting the modem/router back into modem only mode, then do a search for finding the MTU size on the internet.
There are many guides out there on how to find the MTU size.
MTU size can be set from the IPfire console running setup,
under setup go to Networking then Address Settings, then select the RED interface, You will see an option “Force DHCP MTU”
Set the MTU size you found there.
I think that is the likely issue.
But this doesn’t explain the behaviour described.
I suppose a MTU problem too.
Looking at the packet flow should show a series of long ( the smaller MTU ) and short ( the diffenrence to the bigger MTU ) packets.
The modem belongs to my ISP
edit: but “my” firmware is newer than 4.50.18.13-NOS
In modem MTU=1500
I try IPfire unstable version - Download unchanged
I reinstalled IPfire 154 and I entered this value 1500 in the setup IPfire. - Download unchanged
I tried entering different values 1460, 1472, 1000 - Download unchanged
I left the value as it was in the modem - 1500
Then I got the idea…
I set, IP address, gateway, mask, received from DHCP my ISP
to static, in setup IPfire - Download changed to about 500Mb/s
edit: My modem status page -192.168.100.1 too (after changing to modem mode)
“ip link show”
red0: <BROADCAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
green0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
I don’t get the same output you show from Status > Network (Other) I do not get the mtu part, the line stops at metric 203. From your ipfire console, pls post output of “ip link show” (redact mac info)
The 10-mtu hook is checking what the mtu value has been set at in other variables. The hook is checking if the mtu is greater than 576 and if not then it sets it at 576 as that is the lowest value that dhcpcd will work with.
)
Is it possible that IPfire ignores the MTU=1500 entry in the setup->networking…?
