accel-ppp – IT Blog

How to reserve accel-ppp (balancing)

In this article, I will give an example of balancing users on several accel-ppp servers, or in other words, this can also be called redundant accel-ppp servers.

Preparing a Linux server before installing Accel-ppp

Here are some recommendations for setting up a server on which Accel-ppp will work.

IPTables rules for Accel-ppp

In this article I will give an example of IPTables rules for Accel-ppp.

Accel-ppp debug

I will give an example of accel-ppp build with debugging information support, for example, in order to find out the cause of the crash.

Configuring L4-Redirect-ipset for Accel-ipoe and ABillS

In order to authorize clients with a negative balance Accel-ppp to add IP addresses to the ipset list, add the following to its configuration, in the ipoe section:

How to update accel-ppp

I will give an example of updating the accel-ppp, the commands need to be executed as root user.

Install and configure accel-ppp (IPoE) for ABillS

On the test, I’ll run accel-ppp in Ubuntu Server 16.04 LTS for ABillS.

Ip-up and ip-down scripts with ipset for Accel-ppp

I’ll give an example of the scripts I used before, in the allowip list IP addresses were added to which the Internet is allowed, and in denyip those were redirected to the http page with information about the negative deposit.

ABillS + FreeRADIUS + Accel-PPP only issue one DNS

Once after installation ABillS + FreeRADIUS2 + Accel-PPP (ipoe) noticed that for DHCP clients receive only one DNS server.
Access-Accept from FreeRADIUS was this:

Sending Access-Accept of id 1 to 127.0.0.1 port 57481
        Session-Timeout = 604800
        PPPD-Downstream-Speed-Limit = 51200
        Framed-IP-Netmask += 255.255.255.0
        Framed-IP-Netmask += 255.255.255.0
        Acct-Interim-Interval = 600
        DHCP-Domain-Name-Server += 8.8.8.8
        DHCP-Domain-Name-Server += 8.8.4.4
        PPPD-Upstream-Speed-Limit = 51200
        Framed-IP-Address = 172.20.20.20
Finished request 40.

Reason for messages “HTB: quantum of class 10001 is big. Consider r2q change”

Once on the access server, Ubuntu Server 16.04 and Accel-ppp noticed the following messages in the /var/log/kern.log file:

kernel: [365970.550498] HTB: quantum of class 10001 is big. Consider r2q change.
kernel: [365970.550547] HTB: quantum of class 10A49 is big. Consider r2q change.
kernel: [365979.545580] HTB: quantum of class 10001 is big. Consider r2q change.
kernel: [365979.545621] HTB: quantum of class 10BD6 is big. Consider r2q change.
kernel: [365995.601973] HTB: quantum of class 10001 is big. Consider r2q change.
kernel: [365995.602031] HTB: quantum of class 11705 is big. Consider r2q change.

First I tried to track which interfaces are being raised at this moment:

tail -f /var/log/kern.log | grep "quantum of class 10001 is big"
tail -f /var/log/accel-ppp/accel-ppp.log | grep "create interface"

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