I have 2 Cisco 4120 firewalls connected to a VSS with 2 6807 chassis. I am having problems with the spanned etherchannel. I frequently have links suspended and the switch returns a %LACP-SP-4-MULTIPLE_NEIGHBORS: Multiple neighbors detected error. In looking further into the problem, the links that get suspended are all show the Sngl-port-Bndl Mstr Not-in-Bndl port state.
Below, I have included the configuration for the port channel on the 4120's and the port channel on the VSS pair. I have tried various things to no avail.
4120 Port Channels (Same on both)
enter port-channel 5
enable
enter member-port 1 5
enable
exit
enter member-port 1 6
enable
exit
enter member-port 1 7
enable
exit
enter member-port 1 8
enable
exit
set auto-negotiation no
set descr ""
set duplex fullduplex
set flow-control-policy default
set lacp-policy-name default
set port-type data
set speed 10gbps
exit
VSS Port Channel
interface Port-Channel 5
switchport
switchport trunk native vlan #
switchport mode trunk
switchport nonegotiate
port-channel port hash-distribution fixed
end
interface TenGigabitEthernet te2/1/5 (all of the member ports match this config)
switchport
switchport trunk native vlan #
switchport mode trunk
switchport nonegotiate
lacp rate fast
channel-protocol lacp
channel-group 5 mode active
end
