There are 2 3760g catalyst stacked using 2 StackWise cables.
Then the 2960s are stacked using 4 ports as etherchannels.
The switches work fine. Now where I’m having a problem is I want to set up a second etherchannel between the 3760s and the 2960s. I tried using the same config but when I do a show etherchannel summary I see the channel is down.
Any ideas?
here is a diagram
Here are the configs
SWITCH 1
!
! Last configuration change at 04:50:01 UTC Tue Mar 16 1993
!
version 15.0
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Switch1
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
switch 1 provision ws-c3750g-48ps
switch 2 provision ws-c3750g-48ps
system mtu routing 1500
no ip domain-lookup
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 1 priority 24576
!
vlan internal allocation policy ascending
!
ip ssh version 2
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Port-channel2
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface range GigabitEthernet1/0/1-48 , 2/0/1-44
switchport mode access
spanning-tree portfast
!
!
interface GigabitEthernet2/0/45
switchport trunk encapsulation dot1q
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet2/0/46
switchport trunk encapsulation dot1q
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet2/0/47
switchport trunk encapsulation dot1q
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet2/0/48
switchport trunk encapsulation dot1q
switchport mode trunk
speed 1000
duplex full
!
!
interface Vlan1
ip address 192.168.5.2 255.255.255.0
!
ip http server
ip http secure-server
!
!
!
!
!
!
line con 0
logging synchronous
line vty 0 4
no login
transport input ssh
line vty 5 15
no login
!
end
Switch 3
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Switch3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
system mtu routing 1500
ip subnet-zero
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface Port-channel1
switchport mode trunk
!
interface Port-channel2
switchport mode trunk
!
interface range GigabitEthernet0/1-41
switchport mode access
spanning-tree portfast
!
!
interface GigabitEthernet0/42
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/43
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/44
switchport mode trunk
speed 1000
duplex full
channel-protocol lacp
channel-group 2 mode active
!
interface GigabitEthernet0/45
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/46
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/47
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/48
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface Vlan1
ip address 192.168.5.3 255.255.255.0
no ip route-cache
!
ip http server
ip http secure-server
!
control-plane
!
!
line con 0
logging synchronous
line vty 0 4
no login
line vty 5 15
no login
!
end
Switch 4
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Switch4
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
system mtu routing 1500
ip subnet-zero
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface Port-channel1
switchport mode trunk
!
interface Port-channel2
!
interface range GigabitEthernet0/1-44
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/45
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/46
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/47
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface GigabitEthernet0/48
switchport mode trunk
channel-protocol lacp
channel-group 1 mode active
!
interface Vlan1
ip address 192.168.5.4 255.255.255.0
no ip route-cache
!
no ip http server
no ip http secure-server
!
control-plane
!
!
line con 0
logging synchronous
line vty 0 4
no login
line vty 5 15
no login
!
end
Here is a show ethercahnnel detail
Switch3#show etherchannel detail
Channel-group listing:
----------------------
Group: 1
----------
Group state = L2
Ports: 4 Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Gi0/45
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
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
Gi0/45 SA bndl 32768 0x1 0x1 0x2D 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/45 SA 32768 ec44.767f.ef80 20s 0x0 0x1 0x2D 0x3D
Age of the port in the current state: 0d:03h:05m:57s
Port: Gi0/46
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
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
Gi0/46 SA bndl 32768 0x1 0x1 0x2E 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/46 SA 32768 ec44.767f.ef80 6s 0x0 0x1 0x2E 0x3D
Age of the port in the current state: 0d:03h:05m:53s
Port: Gi0/47
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
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
Gi0/47 SA bndl 32768 0x1 0x1 0x2F 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/47 SA 32768 ec44.767f.ef80 24s 0x0 0x1 0x2F 0x3D
Age of the port in the current state: 0d:03h:05m:54s
Port: Gi0/48
------------
Port state = Up Mstr Assoc In-Bndl
Channel group = 1 Mode = Active Gcchange = -
Port-channel = Po1 GC = - Pseudo port-channel = Po1
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
Gi0/48 SA bndl 32768 0x1 0x1 0x30 0x3D
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/48 SA 32768 ec44.767f.ef80 20s 0x0 0x1 0x30 0x3D
Age of the port in the current state: 0d:03h:05m:47s
Port-channels in the group:
---------------------------
Port-channel: Po1 (Primary Aggregator)
------------
Age of the Port-channel = 0d:03h:29m:41s
Logical slot/port = 2/1 Number of ports = 4
HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = LACP
Port security = Disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 00 Gi0/45 Active 0
0 00 Gi0/46 Active 0
0 00 Gi0/47 Active 0
0 00 Gi0/48 Active 0
Time since last port bundled: 0d:03h:05m:49s Gi0/48
Group: 2
----------
Group state = L2
Ports: 3 Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Gi0/42
------------
Port state = Down Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi0/42 SA down 32768 0x2 0x0 0x2A 0x45
Age of the port in the current state: 15d:06h:21m:09s
Port: Gi0/43
------------
Port state = Down Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi0/43 SA down 32768 0x2 0x0 0x2B 0x45
Age of the port in the current state: 15d:06h:21m:10s
Port: Gi0/44
------------
Port state = Down Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi0/44 SA down 32768 0x2 0x0 0x2C 0x45
Age of the port in the current state: 15d:06h:21m:11s
Port-channels in the group:
---------------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 0d:02h:38m:35s
Logical slot/port = 2/2 Number of ports = 0
HotStandBy port = null
Port state = Port-channel Ag-Not-Inuse
Protocol = LACP
Port security = Disabled
Switch1#show etherchannel summary
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SD) LACP Gi2/0/45(I) Gi2/0/46(D) Gi2/0/47(D)
Channel-group listing:
----------------------
Group: 2
----------
Group state = L2
Ports: 3 Maxports = 16
Port-channels: 1 Max Port-channels = 16
Protocol: LACP
Minimum Links: 0
Ports in the group:
-------------------
Port: Gi2/0/45
------------
Port state = Up Sngl-port-Bndl Mstr Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi2/0/45 SA indep 32768 0x2 0x2 0x22E 0x7D
Age of the port in the current state: 0d:00h:02m:51s
Port: Gi2/0/46
------------
Port state = Down Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi2/0/46 SA down 32768 0x2 0x0 0x22F 0x45
--More--
*Mar 16 05:07:51.105: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/11, changed state to down
*Mar 16 05:07:53.109: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/11, changed sAge of the port in the current state: 0d:02h:36m:23s
Port: Gi2/0/47
------------
Port state = Down Not-in-Bndl
Channel group = 2 Mode = Active Gcchange = -
Port-channel = null 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
Gi2/0/47 SA down 32768 0x2 0x0 0x230 0x45
Age of the port in the current state: 0d:02h:36m:23s
Port-channels in the group:
---------------------------
Port-channel: Po2 (Primary Aggregator)
------------
Age of the Port-channel = 15d:00h:03m:40s
Logical slot/port = 10/2 Number of ports = 0
HotStandBy port = null
Port state = Port-channel Ag-Not-Inuse
Protocol = LACP
Port security = Disabled
