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cross-stacked switches/etherchannel with ASA

Dears,

 

I'm trying to configure a cross-stack etherchannel between two physical switches 2960-X and one ASA 5512-X

Here is the switches configuration:

Switch1(config)# interface range interface gigabitEthernet 1/0/1-2 (connected to ASA port 3 and 4)
Switch1(config-if-range)# switchport mode trunk
Switch1(config-if-range)# channel-group 1 mode on 
Switch1(config-if-range)# end 

 

Switch2(config)# interface range interface gigabitEthernet 2/0/1-2 (connected to ASA port 5 and 6)
Switch2(config-if-range)# switchport mode trunk
Switch2(config-if-range)# channel-group 1 mode on 
Switch2(config-if-range)# end 

 

ASA configuration

 

nterface GigabitEthernet0/2
channel-group 1 mode on
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/3
channel-group 1 mode on
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/4
channel-group 1 mode on
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/5
channel-group 1 mode on
no nameif
no security-level
no ip address

 

 

Some interfaces are in suspended mode 

 

show port-channel summary
 
Number of channel-groups in use: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-------------------------------------
1 Po1(U) LACP Gi1/0/1(P) Gi1/0/2(P) Gi2/0/1(s) Gi2/0/2(s)

 

I don't know how to get all ports in P mode instead of (s) suspended.

 

Can we create only a port channel nb 1 on the ASA with 4 interfaces and a port channel nb1  on both switches with Gi1/0/1-2, Gi2/0/1-2.

Should we create two port channels on the ASA and switches?

Is there any workaround with VSS?

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