Etherchannel Interfaces in suspend mode

[SK Faisal]

hi everyone.

i faced some problem about ISR router 4461 to cat 9500 Port channel problem.

1.router 1 - router 2

2. switch 1- switch 2 virtual stacking 

Number of channel-groups in use: 6
Number of aggregators: 6

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) LACP Te1/0/1(s) Te2/0/2(s)
2 Po2(SU) LACP Te1/0/2(P) Te2/0/1(P)
3 Po3(SU) LACP Te1/0/15(P) Te2/0/15(P)
4 Po4(SU) LACP Te1/0/3(P) Te2/0/3(P)
5 Po5(SD) LACP Te1/0/4(s) Te2/0/4(s)
6 Po6(RD) -

core switch - 1

interface Port-channel1
description #### Connect-to Core-R1 ###
switchport trunk allowed vlan 40,41
switchport mode trunk

interface TenGigabitEthernet2/0/2
description ### Connect to Core Router R1-port-T0/0/4 ###
switchport trunk allowed vlan 40,41
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active

router -1

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(RU)

RU - L3 port-channel UP State
SU - L2 port-channel UP state
P/bndl - Bundled
S/susp - Suspended

interface TenGigabitEthernet0/0/5
description ### Connect to SW2-P2/0/2 ####
no ip address
channel-group 1
end

interface Port-channel1.40
description ### Connect to R1-to-PA ####
encapsulation dot1Q 40

please find the attached file

thanks

Sk.faisal 

[flamingbk]

Hello,

I think the command "channel-group protocol lacp" in switch side make this issue.

You can try to remove this command and specify in router side "channel-group 1 mode active/passive" or configure "mode on" in boths sides(SW/RT).

[Reza Sharifi]

Hi,

It appears you are using LACP on the switch and mode "on" the router.

Use mode on or LACP on both the router and the switch and test again.

Also, ISR ports are routed ports and so, you need an SVI on the switch with IP or change the switch port from trunk to routed port with IP address on each side of the Portchannle (layer-3).

HTH