Nov 18, 2009

Link aggregation on Alcatel 5022 Omnicore and Alcatel 6400 Switch

Here is how to do a link aggregation (Fiber Channel or Ethernet) between 2 Alcatel network devices.
First, on the Alcatel 6400 Switch, here is a dump of the config :
!========================================!
! File: /flash/working/boot.cfg !
!========================================!
! Stack Manager :
! Chassis :
system name SW6400
system location Some_Building_Some_Place
! Configuration:
! VLAN :
vlan 1 enable name "VLAN 1"
! VLAN SL:
! IP :
ip service all
ip interface "vlan1" address 192.168.230.246 mask 255.255.255.0 vlan 1 ifindex 1
! IPX :
! IPMS :
! AAA :
aaa authentication console "local"
aaa authentication telnet "local"
aaa authentication http "local"
! PARTM :
! AVLAN :
! 802.1x :
! QOS :
! Policy manager :
! Session manager :
! SNMP :
! RIP :
! IPv6 :
! IPRM :
ip static-route 0.0.0.0/0 gateway 192.168.230.254 metric 1
! RIPng :
! Health monitor :
! Interface :
! Udld :
! Port Mapping :
! Link Aggregate :
static linkagg 1 size 2 admin state enable
static linkagg 1 name "TO_CENTRAL"
static agg 1/1 agg num 1
static agg 2/1 agg num 1
! VLAN AGG:
! 802.1Q :
! Spanning tree :
bridge mode 1x1
! Bridging :
! Bridging :
! Port mirroring :
! UDP Relay :
! Server load balance :
! System service :
debug fscollect disable
! SSH :
! Web :
! AMAP :
! LLDP :
! Lan Power :
! NTP :
! RDP :
! VLAN STACKING:
! Ethernet-OAM :


The link aggregation is created with the "static linkaggr" commands; then the ports 1/1 and 2/1 are added to the aggregation.
These ports are in fact Fiber Channel links.

Then, here is how to create a link aggregation on an Alcatel 5022 Omnicore (i precise that the 2 links which will be agregated HAVE to be on the same card, or slot if you prefer, no aggregate between slot 2 port 1 and slot 3 port 1) :
trunk 1 create
trunk 1
slot 3 port 1 add
slot 3 port 2 add
portlist
Port Members :3 -1, 3 -2


You have now a nice link aggregation between your 5022 and 6400 Alcatel equipements.

Have fun !

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