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bugino
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Posts: 29
Joined: Tue Aug 08, 2006 12:05 am

PPPoE server on ccr1036 getting to 1,5k users: no ip in addresses, no route

Fri Nov 06, 2020 2:35 am

Hello,

I am running PPPoE access concentrator. It provides connection to 1,5k customers. In recent time, i have problem with disconnects. I was suggested by mikrotik support to make new ccr for pppoe only /no NAT, no connection tracking, no firewall/. Now i am running it on ccr1036, peak CPU is 15%. Once per day i need to reboot it, because i loosing gradualy all /ppp active. After reboot i have many tunnels ok, but some has no ip address. maybe 5% of all connections has no dynamic IP in /ip address. This ccr has 100 VLANs, so 100 pppoe servers are running there. Is there any idea, hint or suggestion?

Interested thing is, that after reboot i can see some tunnels in interfaces above VLANs. I mean some tunel connections without IP address are above VLAN hierarchy

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Last edited by bugino on Sat Nov 07, 2020 12:44 pm, edited 2 times in total.
 
bugino
newbie
Topic Author
Posts: 29
Joined: Tue Aug 08, 2006 12:05 am

Re: PPPoE access concentrator - no ip in addresses, no route

Sat Nov 07, 2020 12:07 pm

As i mention, problem occures when only 1 ccr1036 is doing pppoe-server. It is doing only pppoe-server within 100vlans /using local secrets, No firewall, no NAT, no connection tracking. I cannot run 1,5k pppoe-clients on one ccr. It is not matter of CPU, problem is when i passs 1,3k clients running. It is unable to create dynamic IP ADDRESS entry. I saw problem on this ccr1036 yesterday, when connecting 1,2k users, load is less then 2%. When less then 1,4k load is 15%. When pppoe clients is getting to 1,5k, i have CPU 15-99%.

When i run 2 pppoe server, it is OK. But it is not solution for me:

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quija
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Joined: Fri Apr 09, 2021 12:53 pm

Re: PPPoE server on ccr1036 getting to 1,5k users: no ip in addresses, no route

Fri Apr 09, 2021 1:01 pm

Hi,

did you find any solution? We just hit the same problem today. 14 days uptime on CCR2004-1G-12S+2XS, ~1100 PPPoE sessions, simple firewall, simple queues and no problem whatsoever. Today I just moved all PPPoE session to different concentrator. After moving them back to CCR2004-1G-12S+2XS, about 50 sessions had no route in routing table (no ip address either). PPPoE sessions looked ok. Manually clearing them did not help - new sessions were established but still with no routing. Did not rebooted CCR2004-1G-12S+2XS yet.

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