I've encountered some issues with a Cisco Cat 6506-E IOS connecting to a Cisco 6120 Fabric Interconnect. There is two portchannels consisting of 2 10GE ports in each of the PO connecting between each other.
The problem I'm having is that the interfaces one at a time are flapping through any given period. It goes down and within milliseconds it comes back up. Below is my config from the Cisco 6506 and the both 6120's.
From the Cisco 6506, the port channel and interface configurations are as below:
interface Port-channel113
description [-[ Port Channel to MgmtAMP 6120 ]-]
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
lacp fast-switchover
spanning-tree portfast edge trunk
!
interface Port-channel114
description [-[ Port Channel to MgmtAMP 6120 ]-]
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
lacp fast-switchover
spanning-tree portfast edge trunk
interface TenGigabitEthernet3/3
description [-[ Connection to u6120-d7-a port 1/18 ]-]
switchport
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
logging event link-status
channel-protocol lacp
channel-group 113 mode active
lacp port-priority 10
lacp rate fast
!
interface TenGigabitEthernet3/4
description [-[ Connection to u6120-d7-b port 1/18 ]-]
switchport
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
logging event link-status
channel-protocol lacp
channel-group 114 mode active
lacp port-priority 10
lacp rate fast
interface TenGigabitEthernet4/1
description [-[ Connection to u6120-d7-a port 1/17 ]-]
switchport
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
logging event link-status
channel-protocol lacp
channel-group 114 mode active
lacp port-priority 10
lacp rate fast
!
interface TenGigabitEthernet4/2
description [-[ Connection to u6120-d7-b port 1/17 ]-]
switchport
switchport trunk allowed vlan 1,101-112,216,221,240,315,406,407,411,416,417
switchport trunk allowed vlan add 440-447
switchport mode trunk
mtu 9216
logging event link-status
channel-protocol lacp
channel-group 113 mode active
lacp port-priority 10
lacp rate fast
From the Cisco 6120-A, the port channel and interfaces configurations are as below:
interface port-channel113
switchport mode trunk
switchport trunk allowed vlan 1,101-112,216,240,315-316,321,328
switchport trunk allowed vlan add 340-341,406-407,411,416-417,440-447
pinning border
speed 10000
interface Ethernet1/17
switchport mode trunk
switchport trunk allowed vlan 1,101-106,110-112
pinning border
channel-group 113 mode active
no shutdown
interface Ethernet1/18
switchport mode trunk
switchport trunk allowed vlan 1,101-106,110-112
pinning border
channel-group 113 mode active
no shutdown
