Configure Link agg between alcatel 6850 and Cisco 2950

1 ! Link Aggregate  config on alcatel 6580 

            

lacp linkagg 2 size 2 admin state enable            [lacp linkagg <num> size <2,4,8>]                           

lacp agg 1/1 actor admin key 0                              

lacp agg 1/2 actor admin key 0

Show Link Port status

Slot/Port Aggregate SNMP Id   Status   Agg  Oper Link Prim Standby

---------+---------+-------+----------+----+----+----+----+-------

   1/1    Dynamic     1001  ATTACHED     2  UP   UP   NO   NO

   1/2    Dynamic     1002  ATTACHED     2  UP   UP   YES  NO

 In order to pass vlans over lacp trunk  vlan need to be tagged

vlan 30 802.1q 2 [linkagg num]

Configuration on CISCO 2950 Switch

interface Port-channel1                      

 switchport mode trunk                      

 flowcontrol send off                    

!

interface FastEthernet0/1                        

 switchport mode trunk                     

 channel-group 1 mode active                           

 channel-protocol lacp                     

!

interface FastEthernet0/2                        

 switchport mode trunk                     

 channel-group 1 mode active                           

 channel-protocol lacp

Dislpay  etherchannel

show etherchannel 1 port

Port: Fa0/1          

------------           

Port state    = Up Mstr In-Bndl                              

Channel group = 1           Mode = Active          Gcchange = -                                                              

Port-channel  = Po1         GC   =   -             Pseudo port-channel = Po1                                                                           

Port index    = 0           Load = 0x00            Protocol =   LACP