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Bug #9054

Gateway Group slow (or never) to switch back to Tier 1

Added by Mitch Claborn 8 months ago. Updated about 1 month ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
10/22/2018
Due date:
% Done:

0%

Estimated time:
Affected Version:
2.4.4
Affected Architecture:

Description

See https://forum.netgate.com/topic/136852/2-4-4-gateway-group-slow-or-never-to-switch-back-to-tier-1. (No responses yet as of this posting.)

I have a gateway group with 2 gateways, one at Tier 1 and the other at Tier 2. I've been having lots of trouble with my Tier 1 link lately and pfSense will switch over to the Tier 2 link, but when the Tier 1 gateway comes back within limits (latency, packet loss) the routing does not switch back to the Tier 1 gateway. The Gateways widget on the home page shows the Tier 1 as "online" as does Status -> Gateways and Status -> Gateway Groups. The log file shows an alarm for latency and then cleared for latency.

I've set that gateway group as the default gateway and am also sending traffic to it with a LAN firewall rule.

History

#1 Updated by Mitch Claborn 8 months ago

If I set the Tier 1 gateway as "Mark Gateway as Down" then turn that setting back off, the routing will correct itself and switch back to the Tier 1 gateway.

#2 Updated by Mitch Claborn 8 months ago

To make things even more complicated, in the workaround mentioned above, the routing actually changes back to the Tier 1 gateway when I mark it as down, so that when the status is "forced offline" it is still routing through that gateway. When I undo the "mark as down" it continues to route through that gateway.

#3 Updated by Mitch Claborn 8 months ago

The Gateway Group was set as Trigger Level: Packet Loss or High Latency. I changed that to "Member Down" and now the routing seems to be switching back to the Tier 1 gateway as it should. I'm going to revert to "Packet Loss or High Latency" as a test to see if that triggers the problem.

#4 Updated by Mitch Claborn 8 months ago

With the Gateway Group set to "Packet Loss or High Latency" this problem definitely shows up much more often.

#5 Updated by Vasyl Semenchuk 8 months ago

The same problem on all my devices (20 devices) after upgrading

#6 Updated by Mitch Claborn 8 months ago

@VasylSemenchuk Are your gateway groups set to trigger level "Packet Loss or High Latency" or "Member Down"? Does it work better if set to "Member Down"?

#7 Updated by Vasyl Semenchuk 8 months ago

Set to trigger level "Packet Loss or High Latency"
I will set trigger level "Member Down" and let you know on monday or thursday

#8 Updated by Vasyl Semenchuk 8 months ago

Did you try restart service dpinger? In my case this helps switch back to WAN1

#9 Updated by Vasyl Semenchuk 8 months ago

Also i noticed in my case helps when restart openvpn client.
After restart OpenVPN, vpn and other traffic switch back to WAN1

#10 Updated by Vasyl Semenchuk 7 months ago

HI! After some tests noticed that problem appear only when my "Gateway Group" set as Default gateway
If set WAN1 or WAN2 as Default gateway, switching working fine

#11 Updated by Bob Guo about 1 month ago

Generally same problem here, BUT EVEN HAVE PROBLEM WHEN THE GATEWAY GROUP ISN'T PFSENSE DEFAULT GATEWAY. After digging a little bit deeper, I found that the problem resides in failing to generate correct config in /tmp/rules.debug. As f ar as I see, there is no clue shows that there is problem with pfctl reading rules; therefore, I thought the problem might be in parts that take charg e of generating rules or calls generating. For example, when alarms on loss or delay disappeared, pfsense didn't call rules generating process.
I currently try only member down as trigger, and I'd like to know if it works for you.
As I noticed, when problems present, a simple filter reload will get everything back to normal. I don't know if it will work for you. If it works, a temporary workaround may be some cron runned script monitoring if gateway is correct.

#12 Updated by Bob Guo about 1 month ago

Mitch Claborn wrote:

@VasylSemenchuk Are your gateway groups set to trigger level "Packet Loss or High Latency" or "Member Down"? Does it work better if set to "Member Down"?

Do you have problem if the trigger is member down only?

#13 Updated by Bob Guo about 1 month ago

Vasyl Semenchuk wrote:

Did you try restart service dpinger? In my case this helps switch back to WAN1

Actually dpinger is pretty reliable in giving gateway status.

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