11-09-2011 05:46 AM - edited 03-07-2019 03:17 AM
Hi,
We have a couple of IBM blade chassis with Nexus 4000I 10G blade switch in it. Four 10G ports from each Nexus 4000I switch are bundled into a port channel and connected to Nexus 7K.
On the 4k end, one port in the port channel is doing down and coming up as an idividual port. After few minutes it is going down again and coming up as a port-channel member port. It is happening quite offen.
The same issue is observed accross 4 switches.
2011 Nov 8 22:44:49 switch %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel1: Ethernet1/19 is down
2011 Nov 8 22:44:49 switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/19 is down (Initializing)
2011 Nov 8 22:44:59 switch %ETH_PORT_CHANNEL-4-PORT_INDIVIDUAL: port Ethernet1/19 is operationally individual
2011 Nov 8 22:44:59 switch %ETHPORT-5-IF_UP: Interface Ethernet1/19 is up in mode trunk
2011 Nov 8 23:35:29 switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/19 is down (Initializing)
2011 Nov 8 23:35:29 switch %ETH_PORT_CHANNEL-5-PORT_INDIVIDUAL_DOWN: individual port Ethernet1/19 is down
2011 Nov 8 23:35:33 switch %ETH_PORT_CHANNEL-5-PORT_UP: port-channel1: Ethernet1/19 is up
2011 Nov 8 23:35:34 switch %ETHPORT-5-IF_UP: Interface Ethernet1/19 is up in mode trunk
2011 Nov 9 03:42:06 switch %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel1: Ethernet1/19 is down
2011 Nov 9 03:42:06 switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/19 is down (Initializing)
2011 Nov 9 03:42:16 switch %ETH_PORT_CHANNEL-4-PORT_INDIVIDUAL: port Ethernet1/19 is operationally individual
2011 Nov 9 03:42:16 switch %ETHPORT-5-IF_UP: Interface Ethernet1/19 is up in mode trunk
2011 Nov 9 03:42:47 switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/19 is down (Initializing)
2011 Nov 9 03:42:47 switch %ETH_PORT_CHANNEL-5-PORT_INDIVIDUAL_DOWN: individual port Ethernet1/19 is down
2011 Nov 9 03:42:50 switch %ETH_PORT_CHANNEL-5-PORT_UP: port-channel1: Ethernet1/19 is up
2011 Nov 9 03:42:50 switch %ETHPORT-5-IF_UP: Interface Ethernet1/19 is up in mode trunk
The configuration is fine.
Config on 4k end
switch# sh port-channel summary
1 Po1(SU) Eth LACP Eth1/15(P) Eth1/16(P) Eth1/19(P) Eth1/20(P)
switch# sh run int Po1
version 4.1(2)E1(1d)
interface port-channel1
switchport mode trunk
switchport trunk allowed vlan 8
spanning-tree port type normal
speed 10000
switch# sh run int e1/15
version 4.1(2)E1(1d)
interface Ethernet1/15
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 1 mode active
switch# sh run int e1/16
version 4.1(2)E1(1d)
interface Ethernet1/16
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 1 mode active
switch# sh run int e1/19
version 4.1(2)E1(1d)
interface Ethernet1/19
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 1 mode active
switch# sh run int e1/20
version 4.1(2)E1(1d)
interface Ethernet1/20
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 1 mode active
Config on 7K end.
switch# sh port-channel summary
97 Po97(SU) Eth LACP Eth7/15(P) Eth7/16(P) Eth8/15(P) Eth8/16(P)
NBDC-MP01# sh run int po97
!Command: show running-config interface port-channel97
!Time: Wed Nov 9 16:14:59 2011
version 5.0(2a)
interface port-channel97
description " Blade 2 C22 "
switchport mode trunk
switchport trunk allowed vlan 8
spanning-tree port type normal
speed 10000
NBDC-MP01# sh run int Eth7/15
!Command: show running-config interface Ethernet7/15
!Time: Wed Nov 9 16:16:00 2011
version 5.0(2a)
interface Ethernet7/15
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 97 mode active
no shutdown
NBDC-MP01# sh run int Eth7/16
!Command: show running-config interface Ethernet7/16
!Time: Wed Nov 9 16:16:04 2011
version 5.0(2a)
interface Ethernet7/16
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 97 mode active
no shutdown
NBDC-MP01# sh run int Eth8/16
!Command: show running-config interface Ethernet8/16
!Time: Wed Nov 9 16:16:08 2011
version 5.0(2a)
interface Ethernet8/16
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 97 mode active
no shutdown
NBDC-MP01# sh run int Eth8/15
!Command: show running-config interface Ethernet8/15
!Time: Wed Nov 9 16:16:12 2011
version 5.0(2a)
interface Ethernet8/15
switchport mode trunk
switchport trunk allowed vlan 8
speed 10000
channel-group 97 mode active
no shutdown
NBDC-MP01#
11-10-2011 06:29 AM
I dont see any reason why the eth port is going down and coming up again and again ..... any ideas.
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