As shown in Figure 2-1, links between the S5700 and Catalyst 3560 switches are bundled on the two switches, but the link aggregation function does not take effect.
Figure 2-1 Link aggregation between S5700 and Catalyst 3560 switches
Link aggregation configuration on the S5700:
#
interface Eth-Trunk22
port link-type trunk
port trunk allow-pass vlan 2 to 4094
mode lacp //The link aggregation protocol is LACP.
#
interface GigabitEthernet0/0/1
eth-trunk 22
#
interface GigabitEthernet0/0/2
eth-trunk 22
#
interface GigabitEthernet0/0/3
eth-trunk 22
#
interface GigabitEthernet0/0/4
eth-trunk 22
#
Link aggregation configuration on the Catalyst 3560:
!
interface FastEthernet0/1
channel-protocol pagp //The link aggregation protocol is PAgP.
channel-group 22 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/2
channel-protocol pagp
channel-group 22 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/3
channel-protocol pagp
channel-group 22 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/4
channel-protocol pagp
channel-group 22 mode desirable
switchport trunk encapsulation dot1q
switchport mode trunk
!