Link Aggregate not working between Juniper & Alcatel

[JohnNorthWest]

Hi Forum

I'm trying to configure a link aggregate between a standalone Juniper EX3400 switch and an "Alcatel-Lucent Enterprise OmniSwitch 6450".

The Alcatel is model OS6450-U24 which means:
Ports 1 to 22 are fibre ports
Ports 23 & 24 are dual fibre/ethernet

The current link between the Juniper and the Alcatel is currently a single non-aggregate ethernet cable plugged into 1/24 on the Alcatel. This works as expected.

I have configured the link aggregate on both the Juniper & the Alcatel side.
The link aggregate will use Ethernet and therefore currently is just configured for the remaining ethernet port 1/23. 1/24 will get added later.

The configuration is as follows:

! Configuration:
! VLAN :
vlan 2 enable name "Data LAN"
! Link Aggregate :
static linkagg 1 size 2 admin state enable
static linkagg 1 name "LinkToJuniperHAR-SW-2"
static agg 1/23 agg num 1
! VLAN AGG:
vlan 2 port default 1
! 802.1Q :

Main-Comms-6450-u24-> show linkagg

Number Aggregate SNMP Id Size Admin State Oper State Att/Sel Ports
-------+----------+---------+----+------------+--------------+-------------
1 Static 40000001 2 ENABLED DOWN 0 1

Main-Comms-6450-u24-> show linkagg port 1/23

Static Aggregable Port
SNMP Id : 1023,
Slot/Port : 1/23,
Administrative State : ENABLED,
Operational State : DOWN,
Port State : SELECTED,
Link State : DOWN,
Selected Agg Number : 1,
Port position in the aggregate: 0,
Primary port : NO

When we disconnect the existing link (i.e. unplug 1/24) and connect the link aggregate (1/23), the Juniper shows the link/port as up but the aggregate is down.
As I am working remotely I lose access to the Alcatel switch when the change is made as the Alcatel is the switch on the non-internet side of the link.

I have raised a case with Juniper and they state that "Regarding that the ae1 is down, as we can see from interface status there seems the LACP PDUs are not received from Partner".
Juniper also confirm that the configuration on the Juniper side is correct.
I don't have much experience with Alcatel and also we only have break/fix support.

Please could anybody answer my following questions:
a) Can anybody spot any errors with the Alcatel configuration?
b) Has anybody successfully configured an aggregate between an Alcatel and a Juniper and would they be happy to share the configuration?
c) Does anybody have any suggestions on what diagnostics I could run on the Alcatel to diagnose the issue?

I'm trying to get as much information as possible before going to site.

I look forward to hearing from you.

Many Thanks

John

P.S. For those who are interested, the Juniper config is as follows. The exact same Juniper config works on a different ae on the same switch which links to another Juniper switch.


set interfaces interface-range ae1-aggregate-ports member ge-0/0/19
set interfaces interface-range ae1-aggregate-ports member ge-0/0/20
set interfaces interface-range ae1-aggregate-ports description "Aggregate LACP member port ALCATEL SWITCHES"
set interfaces interface-range ae1-aggregate-ports ether-options 802.3ad ae1

set interfaces ae1 aggregated-ether-options minimum-links 1
set interfaces ae1 aggregated-ether-options link-speed 1g
set interfaces ae1 aggregated-ether-options lacp active
set interfaces ae1 aggregated-ether-options lacp periodic slow
set interfaces ae1 unit 0 family ethernet-switching interface-mode access
set interfaces ae1 unit 0 family ethernet-switching vlan members 2
set interfaces ae1 unit 0 family ethernet-switching storm-control default

set protocols rstp interface ae1 mode point-to-point

[SirRob]

Test with lacp linkagg instead of static linkagg.


Check out this link around page 400

https://support.alcadis.nl/Support_file ... l-Lucent/O

[Gleylancer]

"Static Linkagg" on Alcatel is -not- LACP. Please configure LACP instead.