03-18-2012 04:01 PM - edited 03-07-2019 05:38 AM
Hi All
I am doing my CCNP certification I was configuring portchannels on GNS3 router with SW interface. some interface shows down. I checked ports is configure fine and mode is on on all interfaces but when ever I check in sh etherchannel summay it show some interface are down . how to resolve this issue plese guide me thanks.
i am getting this error
Switch 1 Config
NL_B1_SW1#sh etherchannel summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
U - in use
Group Port-channel Ports
-----+------------+-----------------------------------------------------------
1 Po1(SU) Fa1/0(D) Fa1/1(P)
2 Po2(SU) Fa1/2(P) Fa1/3(P)
Switch 2 Config
NL_B1_SW2#sh etherchannel summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
U - in use
Group Port-channel Ports
-----+------------+-----------------------------------------------------------
1 Po1(SU) Fa1/0(D) Fa1/1(P)
Switch 3 Config
NL_B1_SW3#sh etherchannel summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
U - in use
Group Port-channel Ports
-----+------------+-----------------------------------------------------------
1 Po1(SD) Fa1/0(D) Fa1/1(D)
03-18-2012 04:34 PM
Can you post your configs?
03-18-2012 04:55 PM
For Switch 1 Config
Building configuration...
Current configuration : 125 bytes
!
interface Port-channel1
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
end
NL_B1_SW1#sh confi
NL_B1_SW1#sh configuration
Using 2361 out of 155640 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname NL_B1_SW1
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$GfK6$XK/fHlJKoZnnGDabSMmuU1
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
ip domain name nuggetlabs.com
ip name-server 4.2.2.2
ip name-server 4.2.2.3
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
vtp file nvram:vlan.dat
username admin secret 5 $1$RxI8$o4F82juKyDQ1w.5HM6Mqv0
!
!
ip ssh version 2
!
!
!
!
!
interface Port-channel1
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
!
interface Port-channel2
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/1
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/2
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 2 mode on
!
interface FastEthernet1/3
switchport trunk allowed vlan 1,64,66,68,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 2 mode on
!
interface FastEthernet1/4
!
interface FastEthernet1/5
!
interface FastEthernet1/6
!
interface FastEthernet1/7
!
interface FastEthernet1/8
!
interface FastEthernet1/9
!
interface FastEthernet1/10
!
interface FastEthernet1/11
!
interface FastEthernet1/12
!
interface FastEthernet1/13
!
interface FastEthernet1/14
!
interface FastEthernet1/15
!
interface Vlan1
no ip address
shutdown
!
interface Vlan71
ip address 10.1.71.1 255.255.255.0
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
mgcp behavior g729-variants static-pt
!
!
!
!
!
banner motd ^CC
****************
DO NOT LOGIN
****************
^C
!
line con 0
exec-timeout 180 0
password cisco
logging synchronous
line aux 0
line vty 0 4
password cisco
login local
!
ntp server 64.73.32.135
!
end
For Switch 2 Config
Using 1626 out of 155640 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname NL_B1_SW2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
vtp file nvram:vlan.dat
!
!
!
!
!
!
!
interface Port-channel1
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/1
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/2
!
interface FastEthernet1/3
!
interface FastEthernet1/4
!
interface FastEthernet1/5
!
interface FastEthernet1/6
!
interface FastEthernet1/7
!
interface FastEthernet1/8
!
interface FastEthernet1/9
!
interface FastEthernet1/10
!
interface FastEthernet1/11
!
interface FastEthernet1/12
!
interface FastEthernet1/13
!
interface FastEthernet1/14
!
interface FastEthernet1/15
!
interface Vlan1
no ip address
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
mgcp behavior g729-variants static-pt
!
!
!
!
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
login
!
!
end
For Switch 3 Config
Using 1626 out of 155640 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname NL_B1_SW3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
ip cef
!
!
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
vtp file nvram:vlan.dat
!
!
!
!
!
!
!
interface Port-channel1
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/1
switchport trunk allowed vlan 1,64,66,69,71,1002-1005
switchport mode trunk
duplex full
channel-group 1 mode on
!
interface FastEthernet1/2
!
interface FastEthernet1/3
!
interface FastEthernet1/4
!
interface FastEthernet1/5
!
interface FastEthernet1/6
!
interface FastEthernet1/7
!
interface FastEthernet1/8
!
interface FastEthernet1/9
!
interface FastEthernet1/10
!
interface FastEthernet1/11
!
interface FastEthernet1/12
!
interface FastEthernet1/13
!
interface FastEthernet1/14
!
interface FastEthernet1/15
!
interface Vlan1
no ip address
!
ip forward-protocol nd
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
!
mgcp behavior g729-variants static-pt
!
!
!
!
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
login
!
!
end
I have attached all the 3 switches configuration thanks in advance for your help.
faisal
03-18-2012 05:06 PM
Can you add command:
switchport trunk encapsulation dot1q
to the physical ports and Etherchannel interfaces?
03-18-2012 05:14 PM
yes I did
I add this command and its accepted but not showing on interface output.
03-18-2012 05:21 PM
Switch 3 Switchport status
NL_B1_SW3#sh interfaces port-channel 1 switchport
Name: Po1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,64,66,69,71,1002-1005
Trunking VLANs Active: none
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
Switch 2 Switchport status
Name: Po1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,64,66,69,71,1002-1005
Trunking VLANs Active: 1,64,66,69,71
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
Switch 1 Switchport Status
Name: Po1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: 1,64,66,68,69,71,1002-1005
Trunking VLANs Active: 1,64,66,68-69,71
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none
may be you find some problem in this out put
03-18-2012 05:29 PM
For simplicity, can you try configuring the Etherchannel between just 2 switches and not 3
Also can you use LACP instead of on
So switch-1
channel-group 1 mode active
switch-2
channel-group 1 mode passive
If this does not work, can you create a new portchannel and apply the LACP config?
HTH
03-18-2012 05:42 PM
hi
its not giving me these options as I am running an IOS version on GNS3 . and I am doing practice lab directly watching the jeremey videos. but he didnot get any error and I got this interface bundled problem.
03-18-2012 05:31 PM
These commands will be helpful
show etherchannel 1 port-channel
show int Fa0/1
show int status err-disabled
03-18-2012 05:38 PM
I just tried to bundle the interfaces but its not bundled i dun know why. I am watching jeremy video and doing step by step work but I got this issue right now .
Port-channels in the group:
----------------------
Port-channel: Po1
------------
Age of the Port-channel = 00d:02h:28m:45s
Logical slot/port = 8/0 Number of ports = 1
GC = 0x00010001 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Ports in the Port-channel:
Index Port EC state
------+------+------------
0 Fa1/1 on
Time since last port bundled: 00d:01h:05m:35s Fa1/1
Time since last port Un-bundled: 00d:01h:05m:35s Fa1/1
03-18-2012 06:03 PM
Remove the Po1 configuration of both Fa1/0 and Fa1/1. Does the link go up?
03-18-2012 06:14 PM
got the solution
actually configurations are right I have restart the switch thats why configuration doesnot take place
well thanks for guielines
I really appericiate all of your help
regards
faisal
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