Hi,
I've connected several 2960G switches to a 3560 "core" switches. They have been connected using a port-channel consiting of two gigabit ports, like this:
2960G Config:
interface GigabitEthernet0/21 + 22
description TO_3560
switchport trunk allowed vlan 2-4094
switchport mode trunk
media-type rj45
udld port aggressive
mls qos trust dscp
channel-protocol lacp
channel-group 1 mode active
interface Port-channel1
description TO_3560
switchport trunk allowed vlan 2-4094
switchport mode trunk
spanning-tree link-type point-to-point
3560G Config:
interface GigabitEthernet0/5 + 6
description TO_2960G
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2-4094
switchport mode trunk
udld port aggressive
mls qos trust dscp
channel-protocol lacp
channel-group 3 mode active
interface Port-channel3
description TO_2960G
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2-4094
switchport mode trunk
spanning-tree link-type point-to-point
All interfaces mentioned above, and also other interfaces but the config is the same, are showing a lot of OutDiscards / Output Drops. The 2960G switches have several servers connected (gigabit) and the 3560 is a coreswitch connecting al the 2960G's together.
Anyone knows why there are output dops? Switches should be fast enough.