LAGG troubleshooting/question

[gman529]

I currently have a LAGG interface and I'm trying to see if the issue I'm experience is caused by flapping or something else.

The port overview shows the following:
LAGG Statistics   active ports:2
flapping:2

Does this mean I am having issues with my interface?

[Patrick M. Hausen]

Not necessarily. If you reboot either OPNsense or the device at the other end of that lagg interface, there are some "flaps" while everything is set up. I don't know for how long FreeBSD keeps that state in the ifconfig output but I have that across multiple devices and I repeatedly checked at the other end (all Cisco) and the LACP connections seem to be just fine.

Try ifconfig -v lagg0 and if both ports are in the forwarding state, you are probably fine. You might want to set "Use flowid" to "Yes" and see if that improves the reporting.

[Alessandro Del Prete]

Luckily I found your post @pmhausen, I was getting crazy because in the INTERFACES: OVERVIEW of my lagg0 and lagg1 interfaces I hade flaps:2 and flaps:3, even though everything seems to be working fine.

I tried ifconfig -v, but results are not in sync with the UI, hope it's just a matter of waiting for the UI to refresh data:

Code Select Expand

root@OPNsense:~ # ifconfig -v lagg0
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: LAN (lan)
options=4802028<VLAN_MTU,JUMBO_MTU,WOL_MAGIC,NOMAP>
ether 02:d4:32:81:89:00
inet 10.1.10.1 netmask 0xfffffe00 broadcast 10.1.11.255
laggproto lacp lagghash l2,l3,l4
lagg options:
flags=94<USE_NUMA,LACP_STRICT,LACP_FAST_TIMO>
flowid_shift: 16
lagg statistics:
active ports: 2
flapping: 0
lag id: [(8000,02-D4-32-81-89-00,016B,0000,0000),
(8000,60-32-B1-41-3D-0A,07CA,0000,0000)]
laggport: igb0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3f<ACTIVITY,TIMEOUT,AGGREGATION,SYNC,COLLECTING,DISTRIBUTING>
[(8000,02-D4-32-81-89-00,016B,8000,0001),
(8000,60-32-B1-41-3D-0A,07CA,8000,0001)]
laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3f<ACTIVITY,TIMEOUT,AGGREGATION,SYNC,COLLECTING,DISTRIBUTING>
[(8000,02-D4-32-81-89-00,016B,8000,0002),
(8000,60-32-B1-41-3D-0A,07CA,8000,0002)]
groups: lagg
media: Ethernet autoselect
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
root@OPNsense:~ # ifconfig -v lagg1
lagg1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: ONT_LAN (opt2)
options=4802028<VLAN_MTU,JUMBO_MTU,WOL_MAGIC,NOMAP>
ether 40:62:31:0c:0e:e5
inet 192.168.1.222 netmask 0xffffff00 broadcast 192.168.1.255
laggproto lacp lagghash l2,l3,l4
lagg options:
flags=94<USE_NUMA,LACP_STRICT,LACP_FAST_TIMO>
flowid_shift: 16
lagg statistics:
active ports: 3
flapping: 0
lag id: [(8000,40-62-31-0C-0E-E5,018B,0000,0000),
(8000,60-32-B1-41-3D-0A,0E2E,0000,0000)]
laggport: igb3 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3f<ACTIVITY,TIMEOUT,AGGREGATION,SYNC,COLLECTING,DISTRIBUTING>
[(8000,40-62-31-0C-0E-E5,018B,8000,0004),
(8000,60-32-B1-41-3D-0A,0E2E,8000,0017)]
laggport: igb4 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3f<ACTIVITY,TIMEOUT,AGGREGATION,SYNC,COLLECTING,DISTRIBUTING>
[(8000,40-62-31-0C-0E-E5,018B,8000,0005),
(8000,60-32-B1-41-3D-0A,0E2E,8000,0016)]
laggport: igb5 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3f<ACTIVITY,TIMEOUT,AGGREGATION,SYNC,COLLECTING,DISTRIBUTING>
[(8000,40-62-31-0C-0E-E5,018B,8000,0006),
(8000,60-32-B1-41-3D-0A,0E2E,8000,0018)]
groups: lagg
media: Ethernet autoselect
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

[ngreatorex]

There's a small bug in the code that uses the same number for "active ports" and "flapping".

I've opened a PR on GitHub to fix it: https://github.com/opnsense/core/pull/6641.