Is't bug or i mistaken ?
I use L2-ADVENTERPRISEK9-M-15.1-20130726.bin
SW1SW1(config-if)#no sh
SW1(config-if)#
*Oct 26 12:10:54.620: FEC: pagp_switch_hwif_comingup: port Po1
*Oct 26 12:10:54.620: FEC: pagp_switch_reset_cannot_bundle_ports: group 1
*Oct 26 12:10:54.620: FEC: pagp_switch_stay_shutdown: port Et0/0 agport Po1
*Oct 26 12:10:54.621: FEC: pagp_switch_stay_shutdown: port Et0/1 agport Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_port_up: Et0/0
*Oct 26 12:10:54.626: FEC: pagp_switch_invoke_port_up: Et0/0
*Oct 26 12:10:54.626: FEC: pagp_switch_agc_compatable: comparing GC values of Et0/0 Po1 flag = 1 1
*Oct 26 12:10:54.626: FEC: pagp_switch_port_attrib_diff: Et0/0 Po1 same
*Oct 26 12:10:54.626: FEC: pagp_switch_agc_compatable: GC values are compatable
*Oct 26 12:10:54.626: FEC: pagp_switch_find_master: group 1
*Oct 26 12:10:54.626: FEC: fec_bundle: Et0/0
*Oct 26 12:10:54.626: FEC: add port (Et0/0) to agport (Po1)
*Oct 26 12:10:54.626: FEC: pagp_switch_add_port_to_agport_list: afb->nports++ = 1 [Et0/0]
*Oct 26 12:10:54.626: FEC: pagp_switch_add_port_to_agport_internal: msg to PM to bundle port Et0/0 with Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_want_to_bundle: Bndl msg to PM for port Et0/0 to Agport Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_hotstandby: for agport Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_hotstandby: PAgP not enabled on agport Po1
*Oct 26 12:10:54.626: %IDBMAN-3-INVALIDAGGPORTBANDWIDTH: Port-channel1(16 / 0) has an invalid bandwidth value of 0
*Oct 26 12:10:54.626: FEC: pagp_switch_reset_load_index: reading load-index for port Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_port_up: Et0/1
*Oct 26 12:10:54.626: FEC: pagp_switch_invoke_port_up: Et0/1
*Oct 26 12:10:54.626: FEC: pagp_switch_agc_compatable: comparing GC values of Et0/1 Et0/0 flag = 1 1
*Oct 26 12:10:54.626: FEC: pagp_switch_port_attrib_diff: Et0/1 Et0/0 same
*Oct 26 12:10:54.626: FEC: pagp_switch_agc_compatable: GC values are compatable
*Oct 26 12:10:54.626: FEC: fec_bundle: Et0/1
*Oct 26 12:10:54.626: FEC: add port (Et0/1) to agport (Po1)
*Oct 26 12:10:54.626: FEC: pagp_switch_add_port_to_agport_list: afb->nports++ = 2 [Et0/1]
*Oct 26 12:10:54.626: FEC: pagp_switch_add_port_to_agport_internal: msg to PM to bundle port Et0/1 with Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_want_to_bundle: Bndl msg to PM for port Et0/1 to Agport Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_hotstandby: for agport Po1
*Oct 26 12:10:54.626: FEC: pagp_switch_hotstandby: PAgP not enabled on agport Po1
*Oct 26 12:10:54.626: %IDBMAN-3-INVALIDAGGPORTBANDWIDTH: Port-channel1(16 / 0) has an invalid bandwidth value of 0
SW1(config-if)#
*Oct 26 12:10:54.626: FEC: lacp_switch_fast_swover_timer_is_running: Po1 lacp fast timer is not running
*Oct 26 12:10:54.626: FEC: lacp_switch_port_bndl_stayup_cleanup_needed: Po1 lacp fast timer is not running
*Oct 26 12:10:54.626: FEC: pagp_switch_reset_load_index: reading load-index for port Po1
SW1(config-if)#
*Oct 26 12:10:56.627: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up
*Oct 26 12:10:56.627: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
*Oct 26 12:10:56.627: %LINK-3-UPDOWN: Interface Ethernet0/1, changed state to up
*Oct 26 12:10:57.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
*Oct 26 12:10:57.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to up
*Oct 26 12:10:57.631: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/1, changed state to up
SW1(config-if)#
*Oct 26 12:10:59.938: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down
*Oct 26 12:11:00.938: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down
SW1(config-if)#
interface Port-channel1
ip address 192.168.3.1 255.255.255.252
!
interface Ethernet0/0
no switchport
no ip address
duplex auto
channel-group 1 mode on
!
interface Ethernet0/1
no switchport
no ip address
duplex auto
channel-group 1 mode on
SW2
interface Port-channel1
ip address 192.168.3.2 255.255.255.252
!
interface Ethernet0/0
no switchport
no ip address
duplex auto
channel-group 1 mode on
!
interface Ethernet0/1
no switchport
no ip address
duplex auto
channel-group 1 mode on
!
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(RU) - Et0/0(P) Et0/1(P)