SFP port flaps on any config change

[mayheart]

Hey there,

I've noticed this on a few switches running 1.5.9-RC1. This switch has spanning tree enabled, I've seen it happen on switches without spanning tree as well.

This is an example when I did a tag change and added a VLAN.

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Nov 25 16:04:39 UI: VLAN 991 PortSettings: changed from 'UEUUUUUEUUUUUUEEEEEEEEEEET' to 'UEUUUUUEUUUUEEEEEEEEEEEEET'
Nov 25 16:04:39 UI: VLANs: added 'OFFICE_MGMT'
Nov 25 16:04:49 STP: msti 0 set port 1 to discarding
Nov 25 16:04:49 STP: msti 0 set port 2 to discarding
Nov 25 16:04:49 STP: msti 0 set port 4 to discarding
Nov 25 16:04:49 STP: msti 0 set port 5 to discarding
Nov 25 16:04:49 STP: msti 0 set port 6 to discarding
Nov 25 16:04:49 STP: msti 0 set port 7 to discarding
Nov 25 16:04:49 STP: msti 0 set port 8 to discarding
Nov 25 16:04:49 STP: msti 0 set port 9 to discarding
Nov 25 16:04:49 STP: msti 0 set port 10 to discarding
Nov 25 16:04:49 STP: msti 0 set port 11 to discarding
Nov 25 16:04:49 STP: msti 0 set port 12 to discarding
Nov 25 16:04:49 STP: msti 0 set port 13 to discarding
Nov 25 16:04:49 STP: msti 0 set port 14 to discarding
Nov 25 16:04:50 STP: msti 0 set port 26 to discarding
Nov 25 16:04:52 STP: msti 0 set port 26 to learning
Nov 25 16:04:52 STP: msti 0 set port 26 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 14 to learning
Nov 25 16:04:52 STP: msti 0 set port 14 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 13 to learning
Nov 25 16:04:52 STP: msti 0 set port 13 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 12 to learning
Nov 25 16:04:52 STP: msti 0 set port 12 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 11 to learning
Nov 25 16:04:52 STP: msti 0 set port 11 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 10 to learning
Nov 25 16:04:52 STP: msti 0 set port 10 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 9 to learning
Nov 25 16:04:52 STP: msti 0 set port 9 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 8 to learning
Nov 25 16:04:52 STP: msti 0 set port 8 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 7 to learning
Nov 25 16:04:52 STP: msti 0 set port 7 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 6 to learning
Nov 25 16:04:52 STP: msti 0 set port 6 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 5 to learning
Nov 25 16:04:52 STP: msti 0 set port 5 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 4 to learning
Nov 25 16:04:52 STP: msti 0 set port 4 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 2 to learning
Nov 25 16:04:52 STP: msti 0 set port 2 to forwarding
Nov 25 16:04:52 STP: msti 0 set port 1 to learning
Nov 25 16:04:52 STP: msti 0 set port 1 to forwarding
Nov 25 16:04:56 Port: link state changed to 'down' on port 26
Nov 25 16:04:56 STP: msti 0 set port 26 to discarding
Nov 25 16:04:59 Port: link state changed to 'up' (1G) on port 26
Nov 25 16:04:59 STP: msti 0 set port 26 to discarding
Nov 25 16:05:02 STP: msti 0 set port 26 to learning
Nov 25 16:05:02 STP: msti 0 set port 26 to forwarding


[mayheart]

Another switch with spanning-tree disabled.

Code: Select all

Nov 26 09:47:59 UI: VLAN 32 ID: changed from '32' to '1000'
Nov 26 09:48:16 Port: link state changed to 'down' on port 26
Nov 26 09:48:19 Port: link state changed to 'up' (1G) on port 26


Discovery is also disabled on all the switches.

[mayheart]

on a 12 port unit running 1.5.9-RC1...

Code: Select all

Nov 26 12:16:03 UI: VLANs: added 'test'
Nov 26 12:16:09 Port: link state changed to 'down' on port 13
Nov 26 12:16:09 STP: msti 0 set port 13 to discarding
Nov 26 12:16:10 Port: link state changed to 'up' (1G) on port 13
Nov 26 12:16:10 STP: msti 0 set port 13 to discarding
Nov 26 12:16:12 STP: msti 0 set port 13 to learning
Nov 26 12:16:12 STP: msti 0 set port 13 to forwarding


[mayheart]

Any update on this?

I've had to downgrade to 1.5.5 to prevent this from happening.

[mayheart]

Bump.

Any traction on this?

Doing a vlan change and causing a temporarily network outage while the SFP bounces is pretty serve.

As my previous post, it looks something changed after 1.5.5.

[IntL-Daniel]

And the same issue with any RSTP changes reported here. Any chance to fix at least this bug? Thanks!

[mhoppes]

We have stabilized on 1.5.5 as our stable release version for the time being -- that's how we've fixed this and many other issues.

[mayheart]

Yeah, that was around the time I started noticing issues as well. Something changed in 1.5.6 and beyond.

[Garnet]

We have stabilized on 1.5.5 as our stable release version for the time being -- that's how we've fixed this and many other issues.

Can you please share what other issues you've noticed on recent versions that reverting to 1.5.5. fixed? A link to the forum post would work as well.

Cheers,

[mayheart]

Wow I reported this almost 2 years ago...

Will this ever get fixed?