Link aggregation

Link aggregations (L-Agg) can span interfaces across multiple individual switches within the stack. Load balancing is performed on all interfaces of the L-Agg across the stack and is applicable to L2 and L3 L-Aggs.

interface lag 1
    no shutdown
    no routing
    vlan access 1
    loop-protect
interface lag 2
    no shutdown
    bfd min-transmit-interval 1000
    ip address 192.168.12.7/24
interface 1/1/18
    no shutdown
    lag 1
interface 2/1/18
    no shutdown
    lag 1
interface 1/1/23
    no shutdown
    lag 2
interface 2/1/23 
    no shutdown
    lag 2

switch# show lacp interfaces

State abbreviations :
A - Active        P - Passive      F - Aggregable I - Individual
S - Short-timeout L - Long-timeout N - InSync     O - OutofSync
C - Collecting    D - Distributing
X - State m/c expired              E - Default neighbor state

Actor details of all interfaces:
------------------------------------------------------------------------------
Intf    Aggr       Port  Port  State   System-ID         System Aggr Forwarding
        Name       Id    Pri                             Pri    Key  State
------------------------------------------------------------------------------
1/1/18  lag1                                                         up
2/1/18  lag1                                                         up
1/1/23  lag2                                                         up
2/1/23  lag2                                                         up


Partner details of all interfaces:
------------------------------------------------------------------------------
Intf    Aggr       Port  Port  State   System-ID         System Aggr
        Name       Id    Pri                             Pri    Key
------------------------------------------------------------------------------
1/1/18  lag1
2/1/18  lag1
1/1/23  lag2
2/1/23  lag2