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ER605 restarts itself when it deals with heavy traffic

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ER605 restarts itself when it deals with heavy traffic

ER605 restarts itself when it deals with heavy traffic
ER605 restarts itself when it deals with heavy traffic
3 weeks ago - last edited Thursday
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: 2.2.6

It's bit weird here. It looks my ER 605 will restart itself when it has heavy traffic for upload and download, such as when using bittorrent software.

And with the restart, all logs are lost and no trace to see what it really happened.

I tried this several times, and with the bittorrent software running for a few mins, it's very likely the router will crash and restart itself.

I can see CPU is not running even at 100% before it crashes. Please advise what might be the root cause? It's weird the router will restart, if it's just stuck for a few mins, it's still much better, right? Thank you and any idea will be helpful.

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#1
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1 Accepted Solution
Re:ER605 restarts itself when it deals with heavy traffic-Solution
Thursday - last edited Thursday

For anyone who faces the same problem,

We currently believe that IPv6 is the cause of the issue.

We are locating the reason for this minor issue and will fix it in future firmware updates.

 

If you face the same problem, please temporarily disable IPv6.

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#17
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

  @JohnXu 

 

Hi,

 

Do you have any specific configuration? Like ACLs, VLANs, traffic filtering?

Do you use is in Standalone Mode or with Omada Controller?

 

Is it only BitTorrent that makes this problem or other things (like 4k YouTube videos, FTP download, other) as well?

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#2
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

  @RaRu  thanks for this.

 

I am not using ACL, VLAN or any special filtering on this router.

I turned on bandwidth control just to check if it would help, but it still crashes.

I am using PPPOE to connect to the internet via ER605 with both IPV4 and IPV6 enabled. It's only for one WAN, so no load balance either.

For system management, I use standard alone mode, so no omada controller here. So far the issue is only with bittorrent, other online videos are still working fine.

 

Below ER605, i have AP configured for wifi connection, by the way. Thanks.

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#3
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

By the way, I also use VPN features on this router, including ikev2, OpenVPN and WireGuard. Of course, there is no VPN connection before the crash.

DHCP is enabled, but that machine running BitTorrent is setup with static IP address only. Hope this helps to clarify my current setup.

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#4
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

  @JohnXu 

 

Have you set up Port Forwarding on router for that BitTorrent client?

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#5
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago
No port forwarding on the router
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#6
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

Hi @JohnXu 

Thanks for posting in our business forum.

JohnXu wrote

By the way, I also use VPN features on this router, including ikev2, OpenVPN and WireGuard. Of course, there is no VPN connection before the crash.

DHCP is enabled, but that machine running BitTorrent is setup with static IP address only. Hope this helps to clarify my current setup.

You have a VPN but they do not connect. So basically this means it does not interfere with the system.

See a known issue:

Solution to WireGuard VPN Crashes and Reboots on Connection

 

 

If you can confirm that the VPN is not affecting this, only, only the P2P download crashes the router, regardless of what kind of P2P software you use, it crashes the router, try the session limit and see if there is an improvement.

For the max concurrent session of this router, see the product specs.

 

If this issue persists, let me know

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#7
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

  @Clive_A 

Thanks for this.

 

It looks it's said on the webpage, ER605 concurrent session is like 150,000, that's really a big number.

I enabled the session limit and can see it's only about a few thousands in the session monitor screen for the computer running bittorrent.

Just wondering if they are with the same session number concept, or I mis-understood here.

It looks like if the session goes into something like 3000 thousands, it will already make the router unstable. But if the max number is around 150,000, then a few thousands is still at very low amount. Thoughts?

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#8
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

Hi @JohnXu 

Thanks for posting in our business forum.

JohnXu wrote

  @Clive_A 

Thanks for this.

 

It looks it's said on the webpage, ER605 concurrent session is like 150,000, that's really a big number.

I enabled the session limit and can see it's only about a few thousands in the session monitor screen for the computer running bittorrent.

Just wondering if they are with the same session number concept, or I mis-understood here.

It looks like if the session goes into something like 3000 thousands, it will already make the router unstable. But if the max number is around 150,000, then a few thousands is still at very low amount. Thoughts?

Cause it is a P2P download which takes many resources of the switch.

3,000 concurrent sessions which means 3,000 sessions to download mini packets.

 

3,000 sessions for regular web browsing(which may not use that many sessions and maintain that high throughput for a long time) does not affect the router's stability or performance.

 

Also, what's the P2P speed when you have 3,000 sessions as the threshold?

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update! ☛Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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#9
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

  @Clive_A 

with 3000 session limit, the P2P software can still download at max speed of the network, that's around 300Mb. Anyway, I don't have a high network speed here, so I assume ER605 shall be enough to handle it.

And it normally won't crash after the restart, even using the BitTorrent download. But it will easily crash if the router has been running for a day or two.

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#10
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Re:ER605 restarts itself when it deals with heavy traffic
3 weeks ago

Hi @JohnXu 

Thanks for posting in our business forum.

JohnXu wrote

  @Clive_A 

with 3000 session limit, the P2P software can still download at max speed of the network, that's around 300Mb. Anyway, I don't have a high network speed here, so I assume ER605 shall be enough to handle it.

And it normally won't crash after the restart, even using the BitTorrent download. But it will easily crash if the router has been running for a day or two.

I think we might need a remote session with you if you describe it as so.

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update! ☛Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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