Etherchannel is up, but interfaces are disabled

jean-christophe.valiere · ‎03-06-2013

Hi,

Can someone explain to me how this can be possible. Also, note that after a reload both interfaces went back to "connected" state:

asl2-enc05-02#sh int status

Port Name Status Vlan Duplex Speed Type

[...]

Gi0/21 asl2-43-02 gi0/11 connected trunk a-full a-1000 10/100/1000BaseTX

Gi0/22 asl2-43-02 gi0/12 connected trunk a-full a-1000 10/100/1000BaseTX

Gi0/23 asl2-enc05-01 gi0/ disabled trunk a-full a-1000 1000BaseX

Gi0/24 asl2-enc05-01 gi0/ disabled trunk a-full a-1000 1000BaseX

Po1 asl2-43-02 connected trunk a-full a-1000

Po2 asl2-enc05-01 connected trunk a-full a-1000

Fa0 disabled routed auto auto 10/100BaseTX

asl2-enc05-02#sh ru

interface Port-channel1

description asl2-43-02

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

spanning-tree vlan 237,336-338 cost 10000

!

interface Port-channel2

description asl2-enc05-01

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

[...]

interface GigabitEthernet0/21

description asl2-43-02 gi0/11

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet0/22

description asl2-43-02 gi0/12

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

channel-group 1 mode active

!

interface GigabitEthernet0/23

description asl2-enc05-01 gi0/23

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

media-type internal

no cdp enable

channel-group 2 mode active

!

interface GigabitEthernet0/24

description asl2-enc05-01 gi0/24

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

switchport mode trunk

media-type internal

no cdp enable

channel-group 2 mode active

!

asl2-enc05-02#sh ver

Cisco IOS Software, CBS30X0 Software (CBS30X0-IPBASE-M), Version 12.2(50)SE3, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Compiled Wed 22-Jul-09 08:51 by prod_rel_team

Image text-base: 0x00003000, data-base: 0x01540000

ROM: Bootstrap program is CBS30X0 boot loader

BOOTLDR: CBS30X0 Boot Loader (CBS30X0-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc2)

asl2-enc05-02 uptime is 2 years, 13 weeks, 5 days, 5 hours, 4 minutes

System returned to ROM by power-on

System restarted at 12:39:11 CET Tue Nov 30 2010

System image file is "flash:cbs30x0-ipbase-mz.122-50.SE3/cbs30x0-ipbase-mz.122-50.SE3.bin"

cisco WS-CBS3020-HPQ (PowerPC405) processor (revision E0) with 131072K bytes of memory.

Processor board ID FOC1421T1XZ

Last reset from power-on

2 Virtual Ethernet interfaces

1 FastEthernet interface

24 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address : A8:B1:D4:41:2A:80

Motherboard assembly number : 73-10340-12

Motherboard serial number : FOC142204P1

Model revision number : E0

Motherboard revision number : A0

Model number : WS-CBS3020-HPQ

System serial number : FOC1421T1XZ

Top Assembly Part Number : 800-27541-03

Top Assembly Revision Number : A0

Version ID : V03

CLEI Code Number : IPUIBDFRAA

Hardware Board Revision Number : 0x04

Switch Ports Model SW Version SW Image

------ ----- ----- ---------- ----------

* 1 24 WS-CBS3020-HPQ 12.2(50)SE3 CBS30X0-IPBASE-M

Configuration register is 0xF

asl2-enc05-02#sh etherchannel 2 detail

Group state = L2

Ports: 2 Maxports = 16

Port-channels: 1 Max Port-channels = 16

Protocol: LACP

Minimum Links: 0

Ports in the group:

-------------------

Port: Gi0/23

------------

Port state = Up Mstr Assoc In-Bndl

Channel group = 2 Mode = Active Gcchange = -

Port-channel = Po2 GC = - Pseudo port-channel = Po2

Port index = 0 Load = 0x00 Protocol = LACP

Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.

A - Device is in active mode. P - Device is in passive mode.

Local information:

LACP port Admin Oper Port Port

Port Flags State Priority Key Key Number State

Gi0/23 SA bndl 32768 0x2 0x2 0x118 0x3D

Partner's information:

LACP port Admin Oper Port Port

Port Flags Priority Dev ID Age key Key Number State

Gi0/23 SA 32768 a8b1.d441.2f00 9s 0x0 0x2 0x118 0x3D

Age of the port in the current state: 0d:02h:16m:47s

Port: Gi0/24

------------

Port state = Up Mstr Assoc In-Bndl

Channel group = 2 Mode = Active Gcchange = -

Port-channel = Po2 GC = - Pseudo port-channel = Po2

Port index = 0 Load = 0x00 Protocol = LACP

Flags: S - Device is sending Slow LACPDUs F - Device is sending fast LACPDUs.

A - Device is in active mode. P - Device is in passive mode.

Local information:

LACP port Admin Oper Port Port

Port Flags State Priority Key Key Number State

Gi0/24 SA bndl 32768 0x2 0x2 0x119 0x3D

Partner's information:

mhnedirli · ‎03-06-2013

this seems ok. what is the configuration of other side. port configurations must be same in etherchannel interfaces. do it step by step

!

default inter range f0/23 - 24

inter range f0/23 - 24

shut

channel-group 1 mode active

switchport trunk enc dot1q

switchport mode trunk

switchport trunk native vlan 700

switchport trunk allowed vlan 200,202-205,212,214,218-220,222-230,233,234

switchport trunk allowed vlan add 237-240,242-244,246,247,302,303,306,315,316

switchport trunk allowed vlan add 318,325,330-342,346-348,600,700,702-704,706

switchport trunk allowed vlan add 709,716-718,720,725,726,796

no shut

!

InayathUlla Sharieff · ‎03-06-2013

Hi Jean,

As Mhendirli said kindly configure the parameters to be equal at both the ends to avoid ports going down or disabled.

Probably before rebooting the device you could have bounced the port-channel ports and had checked the status?

Next Time if in caes you see the same issue then collect and check the following information:

Make sure all vlans, trunk,native vlan parameters are matching on both the sides of Port-Channel.

We would need the following information:

=========================

1-Port channel configuration from both the end

2-Interface config belongs to that specific port channel

3-STP instance/status of the port-channel from both the end.

4-Latest logs from the device.

5- Shut and no shut the Port-Channel ports.

HTH

Regards

Inayath

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