[Problem Description]
why the l2protocol statistics is not showing the lacp input/output packet
[Problem Analysis]
The l2 protocol-tunnel group-mac command enables the switch to replace the multicast destination MAC address of Layer 2 protocol packets with a specified multicast MAC address.
The undo l2protocol-tunnel command disables the group MAC function for Layer 2 protocol transparent transmission. After you run this command, the switch deletes a configured multicast destination MAC address of Layer 2 protocol packets except STP packets that uses the default multicast destination address or restores the default multicast destination MAC address of STP packets.
So we need to add the [S5720-47]l2protocol-tunnel lacp group-mac (default-group-mac)the mac you also can use actual Cisco lacp-MAC
Command.
[Root Cause]
Because the layer 2 passthrough of lacp is not turned on by default; stp is turned on by default; so you need to manually configure lacp's group-mac.
[Solution Description]
[S5720-47]l2protocol-tunnel lacp group-mac (default-group-mac)the mac you also can use actual Cisco lacp-MAC
Command.