HP 2920 Trunk/LACP with four Gbit Radios

[BruisE]

Hello everyone,

a few weeks ago we ordered 4 new WiFi-Radios to connect a new building to our network.

We bought a few HP2920 ProCurves to accomplish a Trunk/LACP over these four radios. To have redundancy we have on both sides - building A and B - a stack with HP2920.

Radio1 & Radio5 -> Line1
Radio2 & Radio6 -> Line2

Radio3 & Radio7 -> Line3

Radio4 & Radio8 -> Line4 (used productive right at the moment)

I configured the switches as shown below:

Switch-Stack-A (main building):

#sh la

LACP Trunk Port LACP
Port Enabled Group Status Partner Status
---- ------- ------- ------- ------- -------
1/1 Active Trk1 Up Yes Success
1/2 Active Trk1 Up Yes Success
2/1 Active Trk1 Up Yes Success

1. sh tr

Load Balancing Method: L3-based (Default), L2-based if non-IP traffic

Port | Name Type | Group Type
------ + -------------------------------- --------- + ----- --------
1/1 | Radio1 192.168.8.71 100/1000T | Trk1 LACP
1/2 | Radio2 192.168.8.72 100/1000T | Trk1 LACP
2/1 | Radio3 192.168.8.73 100/1000T | Trk1 LACP


Switch-Stack-B (new building):

#sh la
LACP Trunk Port LACP
Port Enabled Group Status Partner Status
---- ------- ------- ------- ------- -------
1/1 Active Trk1 Up Yes Success
2/1 Active Trk1 Up Yes Success
2/2 Active Trk1 Up Yes Success

#sh tr
Load Balancing Method: L3-based (Default), L2-based if non-IP traffic

Port | Name Type | Group Type
------ + -------------------------------- --------- + ----- --------
1/1 | Radio7 192.168.8.77 100/1000T | Trk1 LACP
2/1 | Radio5 192.168.8.75 100/1000T | Trk1 LACP
2/2 | Radio6 192.168.8.76 100/1000T | Trk1 LACP

RSTP is configured as well.

-----------------------------------------------------------------------------------------

Now I have a big big problem, if im going to terminate one connection the fail-over isnt working as expected. The whole trhee/four connections are going down for approximately 30 seconds. *shocked*

I tried to configure the same setup on normal copper cabels and its working just fine. 

I've tried to do the LACP trunk static active both sides, static active/passive as well as dynamic. Non of theme is working and I don't have any ideas left.

Does anyone have any suggestions or tips? I'm becoming desperate.

Many thanks and greetings from Germany

BruisE

[Vince-Whirlwind]

What do your switch logs show when you attempt the fail-over test?

[BruisE]

Good morning,

Disconnected the port 2/2 on switch A on 08/15/2014 07:24:01

Switch A:

#sh logging -r

---- Reverse event Log listing: Events Since Boot ----
I 08/15/14 07:24:03 00077 ports: ST1-CMDR: port 2/2 in Trk1 is now off-line
I 08/15/14 07:22:19 00076 ports: ST1-CMDR: port 2/2 in Trk1 is now on-line

Switch B:

#sh logging -r

---- Reverse event Log listing: Events Since Boot ----
I 08/15/14 07:25:24 00435 ports: ST2-CMDR: port 2/2 is Blocked by LACP
I 08/15/14 07:24:20 00414 SNTP: ST2-CMDR: Unable to reach configured SNTP
servers
I 08/15/14 07:24:20 02631 SNTP: ST2-CMDR: Server not found at 192.168.8.1.

Or is there another command i can use with more details?