Channel-Group Configuration Needed

[Dektaki]

I have 2 Cisco 2960's . I use Ports 45 - 48 in a Trunk mode and have created EtherChannels to attempt to double my link speed between the switches. When I do a "sho etherchannel detail, I show that on Switch 1 port 47 is "Down not in bundle" and on Switch 2 "Down not in bundle". However the channel-group is up for on the other two ports between the two switches...What am I missing here?

2960-1 - Ports 47,48 in Channel-Group 1 Mode desirable non-silent (Uplink to Switch 2)Trunk Ports for VTP purposes

2960-2 - Ports 45,46 in Channel-Group 1 Mode desirable non-silent (Uplink to Switch 1)Trunk Ports for VTP purposes


ViperGG, if your reading this you gave me this config about 9 months ago and it worked great...not sure what's different about these switches other than the newer version of IOS...

 

[vipergg]

Shouldn't be any different , just make sure the configs on the connectings ports on each side are exactly the same otherwise the switch will not aggregate the channels , make sure stuff like speeds and duplex and if any trunking information all has to match extactly . Also bring all your ports up at the same time useing the interface range command . If you try to add the channel group command to each port one at a time it won't work as you then have unequal parameters on each side .If you can post the link configs we can take a look at them .

 

[Dektaki]

Here's Switch 1's "show etherchannel detail"

BOI-2960G-1#sho etherchannel detail
Channel-group listing:
----------------------

Group: 1
----------
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: PAgP
Ports in the group:
-------------------
Port: Gi0/47
------------

Port state = Down Not-in-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = null GC = 0x00000000 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP

Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.

Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Gi0/47 d U1/S1 1s 0 128 Any 0

Age of the port in the current state: 0d:04h:15m:56s

Port: Gi0/48
------------

Port state = Up Mstr In-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP

Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.

Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Gi0/48 SC U6/S7 H 30s 1 128 Any 5001

Partner's information:

Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Gi0/48 BOI-2960G-2 001e.f697.1800 Gi0/46 14s SC 10001

Age of the port in the current state: 0d:03h:36m:16s

Port-channels in the group:
---------------------------

Port-channel: Po1
------------

Age of the Port-channel = 0d:03h:36m:48s
Logical slot/port = 2/1 Number of ports = 1
GC = 0x00010001 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = PAgP

Ports in the Port-channel:

Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi0/48 Desirable-Sl 0

Time since last port bundled: 0d:03h:36m:18s Gi0/48



Here's Switch 2's "show etherchannel detail"

BOI-2960G-2#sho etherchannel detail
Channel-group listing:
----------------------

Group: 1
----------
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: PAgP
Ports in the group:
-------------------
Port: Gi0/45
------------

Port state = Down Not-in-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = null GC = 0x00000000 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP

Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.

Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Gi0/45 d U1/S1 1s 0 128 Any 0

Age of the port in the current state: 0d:04h:17m:05s

Port: Gi0/46
------------

Port state = Up Mstr In-Bndl
Channel group = 1 Mode = Desirable-Sl Gcchange = 0
Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1
Port index = 0 Load = 0x00 Protocol = PAgP

Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.

Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Gi0/46 SC U6/S7 H 30s 1 128 Any 5001

Partner's information:

Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Gi0/46 BOI-2960G-1 001e.f697.6b00 Gi0/48 5s SC 10001

Age of the port in the current state: 0d:03h:37m:26s

Port-channels in the group:
---------------------------

Port-channel: Po1
------------

Age of the Port-channel = 0d:03h:38m:45s
Logical slot/port = 2/1 Number of ports = 1
GC = 0x00010001 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = PAgP

Ports in the Port-channel:

Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi0/46 Desirable-Sl 0

Time since last port bundled: 0d:03h:37m:28s Gi0/46


I did use the int range g0/xx - xx command on both switches as well. I've also gone back and forth between silent and non-silent configurations...

 

[vipergg]

Please post the show runn configs for ports 45-48 on each side. Are these trunked also or just a straight port channel ?

 

[vipergg]

Don't think ti makes any difference but just for troubleshooting sake you might want to match up the ports on each side I see you have port 48 on one side going to port 46 on the other . Just easier to troubleshooting if you keep things symetrical.

 

[vipergg]

Sorry I may have read your post wrong in your intial post I thought you meant you had aggragated 4 ports across the links but you only did a 2 port etherchannel . A show runn would help , thanks...

 

[Dektaki]

Switch 1: Show Run:

BOI-2960G-1#sho run
Building configuration...

Current configuration : 4017 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname BOI-2960G-1
!
enable password 7 100F081001123F121926
!
no aaa new-model
system mtu routing 1500
vtp file BOI
ip subnet-zero
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface Port-channel1
!
interface GigabitEthernet0/1
description *** ACCESS PORT ***
!
interface GigabitEthernet0/2
description *** ACCESS PORT ***
!
interface GigabitEthernet0/3
description *** ACCESS PORT ***
!
interface GigabitEthernet0/4
description *** ACCESS PORT ***
!
interface GigabitEthernet0/5
description *** ACCESS PORT ***
!
interface GigabitEthernet0/6
description *** ACCESS PORT ***
!
interface GigabitEthernet0/7
description *** ACCESS PORT ***
!
interface GigabitEthernet0/8
description *** ACCESS PORT ***
!
interface GigabitEthernet0/9
description *** ACCESS PORT ***
!
interface GigabitEthernet0/10
description *** ACCESS PORT ***
!
interface GigabitEthernet0/11
description *** ACCESS PORT ***
!
interface GigabitEthernet0/12
description *** ACCESS PORT ***
!
interface GigabitEthernet0/13
description *** ACCESS PORT ***
!
interface GigabitEthernet0/14
description *** ACCESS PORT ***
!
interface GigabitEthernet0/15
description *** ACCESS PORT ***
!
interface GigabitEthernet0/16
description *** ACCESS PORT ***
!
interface GigabitEthernet0/17
description *** ACCESS PORT ***
!
interface GigabitEthernet0/18
description *** ACCESS PORT ***
!
interface GigabitEthernet0/19
description *** ACCESS PORT ***
!
interface GigabitEthernet0/20
description *** ACCESS PORT ***
!
interface GigabitEthernet0/21
description *** ACCESS PORT ***
!
interface GigabitEthernet0/22
description *** ACCESS PORT ***
!
interface GigabitEthernet0/23
description *** ACCESS PORT ***
!
interface GigabitEthernet0/24
description *** ACCESS PORT ***
!
interface GigabitEthernet0/25
description *** ACCESS PORT ***
!
interface GigabitEthernet0/26
description *** ACCESS PORT ***
!
interface GigabitEthernet0/27
description *** ACCESS PORT ***
!
interface GigabitEthernet0/28
description *** ACCESS PORT ***
!
interface GigabitEthernet0/29
description *** ACCESS PORT ***
!
interface GigabitEthernet0/30
description *** ACCESS PORT ***
!
interface GigabitEthernet0/31
description *** ACCESS PORT ***
!
interface GigabitEthernet0/32
description *** ACCESS PORT ***
!
interface GigabitEthernet0/33
description *** ACCESS PORT ***
!
interface GigabitEthernet0/34
description *** ACCESS PORT ***
!
interface GigabitEthernet0/35
description *** ACCESS PORT ***
!
interface GigabitEthernet0/36
description *** ACCESS PORT ***
!
interface GigabitEthernet0/37
description *** ACCESS PORT ***
!
interface GigabitEthernet0/38
description *** ACCESS PORT ***
!
interface GigabitEthernet0/39
description *** ACCESS PORT ***
!
interface GigabitEthernet0/40
description *** ACCESS PORT ***
!
interface GigabitEthernet0/41
description *** ACCESS PORT ***
!
interface GigabitEthernet0/42
description *** ACCESS PORT ***
!
interface GigabitEthernet0/43
description *** ACCESS PORT ***
!
interface GigabitEthernet0/44
description *** ACCESS PORT ***
!
interface GigabitEthernet0/45
description *** UPLINK PORTS ***
switchport mode trunk
!
interface GigabitEthernet0/46
description *** UPLINK PORTS ***
switchport mode trunk
!
interface GigabitEthernet0/47
description *** UPLINK PORTS ***
switchport mode trunk
shutdown
channel-group 1 mode desirable
!
interface GigabitEthernet0/48
description *** UPLINK PORTS ***
switchport mode trunk
shutdown
channel-group 1 mode desirable
!
interface Vlan1
ip address 10.8.8.2 255.255.255.0
no ip route-cache
!
ip http server
!
control-plane
!
!
line con 0
password 7 06345C311C634F17
logging synchronous
line vty 0 4
password 7 097E1D194928511C
logging synchronous
login
line vty 5 15
password 7 097E1D194928511C
logging synchronous
login
!
end


Switch 2: Show Run:

BOI-2960G-1#sho run
Building configuration...

Current configuration : 4017 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname BOI-2960G-1
!
enable password 7 100F081001123F121926
!
no aaa new-model
system mtu routing 1500
vtp file BOI
ip subnet-zero
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface Port-channel1
!
interface GigabitEthernet0/1
description *** ACCESS PORT ***
!
interface GigabitEthernet0/2
description *** ACCESS PORT ***
!
interface GigabitEthernet0/3
description *** ACCESS PORT ***
!
interface GigabitEthernet0/4
description *** ACCESS PORT ***
!
interface GigabitEthernet0/5
description *** ACCESS PORT ***
!
interface GigabitEthernet0/6
description *** ACCESS PORT ***
!
interface GigabitEthernet0/7
description *** ACCESS PORT ***
!
interface GigabitEthernet0/8
description *** ACCESS PORT ***
!
interface GigabitEthernet0/9
description *** ACCESS PORT ***
!
interface GigabitEthernet0/10
description *** ACCESS PORT ***
!
interface GigabitEthernet0/11
description *** ACCESS PORT ***
!
interface GigabitEthernet0/12
description *** ACCESS PORT ***
!
interface GigabitEthernet0/13
description *** ACCESS PORT ***
!
interface GigabitEthernet0/14
description *** ACCESS PORT ***
!
interface GigabitEthernet0/15
description *** ACCESS PORT ***
!
interface GigabitEthernet0/16
description *** ACCESS PORT ***
!
interface GigabitEthernet0/17
description *** ACCESS PORT ***
!
interface GigabitEthernet0/18
description *** ACCESS PORT ***
!
interface GigabitEthernet0/19
description *** ACCESS PORT ***
!
interface GigabitEthernet0/20
description *** ACCESS PORT ***
!
interface GigabitEthernet0/21
description *** ACCESS PORT ***
!
interface GigabitEthernet0/22
description *** ACCESS PORT ***
!
interface GigabitEthernet0/23
description *** ACCESS PORT ***
!
interface GigabitEthernet0/24
description *** ACCESS PORT ***
!
interface GigabitEthernet0/25
description *** ACCESS PORT ***
!
interface GigabitEthernet0/26
description *** ACCESS PORT ***
!
interface GigabitEthernet0/27
description *** ACCESS PORT ***
!
interface GigabitEthernet0/28
description *** ACCESS PORT ***
!
interface GigabitEthernet0/29
description *** ACCESS PORT ***
!
interface GigabitEthernet0/30
description *** ACCESS PORT ***
!
interface GigabitEthernet0/31
description *** ACCESS PORT ***
!
interface GigabitEthernet0/32
description *** ACCESS PORT ***
!
interface GigabitEthernet0/33
description *** ACCESS PORT ***
!
interface GigabitEthernet0/34
description *** ACCESS PORT ***
!
interface GigabitEthernet0/35
description *** ACCESS PORT ***
!
interface GigabitEthernet0/36
description *** ACCESS PORT ***
!
interface GigabitEthernet0/37
description *** ACCESS PORT ***
!
interface GigabitEthernet0/38
description *** ACCESS PORT ***
!
interface GigabitEthernet0/39
description *** ACCESS PORT ***
!
interface GigabitEthernet0/40
description *** ACCESS PORT ***
!
interface GigabitEthernet0/41
description *** ACCESS PORT ***
!
interface GigabitEthernet0/42
description *** ACCESS PORT ***
!
interface GigabitEthernet0/43
description *** ACCESS PORT ***
!
interface GigabitEthernet0/44
description *** ACCESS PORT ***
!
interface GigabitEthernet0/45
description *** UPLINK PORTS ***
switchport mode trunk
!
interface GigabitEthernet0/46
description *** UPLINK PORTS ***
switchport mode trunk
!
interface GigabitEthernet0/47
description *** UPLINK PORTS ***
switchport mode trunk
shutdown
channel-group 1 mode desirable
!
interface GigabitEthernet0/48
description *** UPLINK PORTS ***
switchport mode trunk
shutdown
channel-group 1 mode desirable
!
interface Vlan1
ip address 10.8.8.2 255.255.255.0
no ip route-cache
!
ip http server
!
control-plane
!
!
line con 0
password 7 06345C311C634F17
logging synchronous
line vty 0 4
password 7 097E1D194928511C
logging synchronous
login
line vty 5 15
password 7 097E1D194928511C
logging synchronous
login
!
end

 

[vipergg]

Instead of forcing the trunk on try this each port . This will negotiate the trunk instead of forcing it on . Also I have to ask the simple question you do have a link light between port 45 and 47 on the opposite side . Also check the logs it will usually give you an indication of why it did or did not build the channel . Make sure to bring port ports up at the same time .

switchport mode dynamic desirable
switchport trunk native vlan 1

 

[vipergg]

should have added this to last message.

http://cisco.com/en/US/docs/switche.../12.2_25_fx/configuration/guide/swethchl.html