Dear NetPro gurus,
One of my customer is trying to setup an EtherChannel (LACP) on a pair of Nexus 7000. However, doesn't matter what we do, the port Eth 1/17 always become suspended. We have tried swapping fiber cables and also swapping SFPs, but no help.
The 1st Nexus 7010 - called 'VIWLRCA'
The 2nd Nexus 7010 - called 'VIWLRCB'
Originally port eth 1/17 are left as 'normal' trunk port, and we can see eth 1/17 shows up fine under 'show interface brief'
viwlrca-PROD# sh run int eth 1/17
interface Ethernet1/17
switchport
switchport mode trunk
udld disable
no shutdown
viwlrca-PROD# sh run int eth 1/18
interface Ethernet1/18
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
viwlrca-PROD# sh int brief
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Port
Interface Ch #
--------------------------------------------------------------------------------
Eth1/17 1 eth trunk up none 10G(S) --
Eth1/18 1 eth trunk up none 10G(S) 20
Eth1/19 -- eth routed down SFP not inserted auto(S) --
Eth1/20 -- eth routed down SFP not inserted auto(S) --
Eth1/21 -- eth routed down Administratively down auto(S) --
Eth1/22 -- eth routed down Administratively down auto(S) --
Eth1/23 -- eth routed down Administratively down auto(S) --
Eth1/24 -- eth routed down Administratively down auto(S) --
Eth2/25 -- eth routed down Administratively down auto(D) --
Eth2/26 -- eth routed down Administratively down auto(D) --
Eth2/27 -- eth routed down SFP not inserted auto(D) --
Eth2/28 -- eth routed down SFP not inserted auto(D) --
Eth2/29 -- eth routed down SFP not inserted auto(D) --
Eth2/30 -- eth routed down SFP not inserted auto(D) --
Eth2/31 -- eth routed down SFP not inserted auto(D) --
Eth2/32 -- eth routed down SFP not inserted auto(D) --
viwlrca-PROD#
-----------------------------
But as soon as I add the Eth 1/17 back onto PortChannel 20
The Eth 1/17 becomes "Suspended" straight away
viwlrca-PROD# sh int brief
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Por
t
Interface Ch
#
--------------------------------------------------------------------------------
Eth1/17 1 eth trunk down suspended auto(S) 20
Eth1/18 1 eth trunk up none 10G(S) 20
Eth1/19 -- eth routed down SFP not inserted auto(S) --
Eth1/20 -- eth routed down SFP not inserted auto(S) --
Eth1/21 -- eth routed down Administratively down auto(S) --
Eth1/22 -- eth routed down Administratively down auto(S) --
Eth1/23 -- eth routed down Administratively down auto(S) --
Eth1/24 -- eth routed down Administratively down auto(S) --
Eth2/25 -- eth routed down Administratively down auto(D) --
Eth2/26 -- eth routed down Administratively down auto(D) --
Eth2/27 -- eth routed down SFP not inserted auto(D) --
Eth2/28 -- eth routed down SFP not inserted auto(D) --
Eth2/29 -- eth routed down SFP not inserted auto(D) --
Eth2/30 -- eth routed down SFP not inserted auto(D) --
Eth2/31 -- eth routed down SFP not inserted auto(D) --
Eth2/32 -- eth routed down SFP not inserted auto(D) --
viwlrca-PROD#
viwlrca-PROD# sh port-channel summary
Flags: D - Down P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended r - Module-removed
S - Switched R - Routed
U - Up (port-channel)
M - Not in use. Min-links not met
--------------------------------------------------------------------------------
Group Port- Type Protocol Member Ports
Channel
--------------------------------------------------------------------------------
20 Po20(SU) Eth LACP Eth1/17(s) Eth1/18(P)
viwlrca-PROD#
-----------------------------------------------------
Config on Primary Nexus:-
viwlrca-PROD# sh run
!Command: show running-config
!Time: Tue Mar 22 06:04:26 2011
version 5.1(1a)
hostname PROD
cfs eth distribute
feature udld
feature interface-vlan
feature lacp
feature vpc
feature vtp
username admin password 5 $1$pkJaKHZW$Sx4wpDG5xXYkD.QfDk/Cg. role vdc-admin
no ip domain-lookup
ip domain-name vfc.com
crypto key param rsa label viwlrca-PROD.vfc.com modulus 2048
snmp-server user admin vdc-admin auth md5 0x05f7328e3b39a70be09abc3056ec2819 pri
v 0x05f7328e3b39a70be09abc3056ec2819 localizedkey
vrf context management
spanning-tree pathcost method long
spanning-tree port type edge bpduguard default
spanning-tree loopguard default
spanning-tree vlan 1-3967,4048-4093 priority 4096
interface Vlan1
interface Vlan161
ip address 172.30.161.2/24
interface Vlan162
ip address 172.30.162.2/24
interface Vlan163
ip address 172.30.163.2/24
interface Vlan164
ip address 172.30.164.2/24
interface Vlan165
ip address 172.30.165.2/24
interface Vlan190
ip address 172.30.190.2/24
interface port-channel20
switchport
switchport mode trunk
interface Ethernet1/17
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
interface Ethernet1/18
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
interface Ethernet1/19
interface Ethernet1/20
interface Ethernet1/21
interface Ethernet1/22
interface Ethernet1/23
interface Ethernet1/24
interface Ethernet2/25
interface Ethernet2/26
interface Ethernet2/27
interface Ethernet2/28
interface Ethernet2/29
interface Ethernet2/30
interface Ethernet2/31
interface Ethernet2/32
interface Ethernet2/33
interface Ethernet2/34
interface Ethernet2/35
interface Ethernet2/36
interface Ethernet3/25
interface Ethernet3/26
interface Ethernet3/27
interface Ethernet3/28
interface Ethernet3/29
interface Ethernet3/30
interface Ethernet3/31
interface Ethernet3/32
interface Ethernet3/33
interface Ethernet3/34
interface Ethernet3/35
interface Ethernet3/36
line vty
viwlrca-PROD#
Config for Secondary Nexus 7000
------------------------------------------------
VIWLRCB-PROD# sh run
!Command: show running-config
!Time: Tue Mar 22 09:19:22 2011
version 5.1(1a)
hostname PROD
cfs eth distribute
feature interface-vlan
feature lacp
feature vpc
feature vtp
username admin password 5 $1$Lc486EOm$EtKhZWuxGjWWokfeuUsMk. role vdc-admin
no ip domain-lookup
ip domain-name vfc.com
crypto key param rsa label VIWLRCB-PROD.vfc.com modulus 2048
snmp-server user admin vdc-admin auth md5 0xeb607b54234985ed6740c5fdbb8d84c6 pri
v 0xeb607b54234985ed6740c5fdbb8d84c6 localizedkey
vrf context management
spanning-tree pathcost method long
spanning-tree port type edge bpduguard default
spanning-tree loopguard default
spanning-tree vlan 1-3967,4048-4093 priority 8192
interface Vlan1
interface port-channel20
switchport
switchport mode trunk
interface Ethernet1/17
switchport
switchport mode trunk
channel-group 20 mode active
no shutdown
interface Ethernet1/18
switchport
switchport mode trunk
channel-group 20 mode active
no shutdown
interface Ethernet1/19
interface Ethernet1/20
interface Ethernet1/21
interface Ethernet1/22
interface Ethernet1/23
interface Ethernet1/24
interface Ethernet2/25
interface Ethernet2/26
interface Ethernet2/27
interface Ethernet2/28
interface Ethernet2/29
interface Ethernet2/30
interface Ethernet2/31
interface Ethernet2/32
interface Ethernet2/33
interface Ethernet2/34
interface Ethernet2/35
interface Ethernet2/36
interface Ethernet3/25
interface Ethernet3/26
interface Ethernet3/27
interface Ethernet3/28
interface Ethernet3/29
interface Ethernet3/30
interface Ethernet3/31
interface Ethernet3/32
interface Ethernet3/33
interface Ethernet3/34
interface Ethernet3/35
interface Ethernet3/36
line vty
VIWLRCB-PROD#
Cheers,
Hunt
