07-06-2010 12:32 PM - edited 03-06-2019 11:55 AM
Can someone look at this configuration and help me troubleshoot why my port-channel did not come up?
I have a 6513 with a SUP 720 10G and a 4510 with SUP 6E. I installed new 10Gig uplinks and tried to configure a port-channel but could not get it to come up. Both the 10G uplinks showed UP and UP but my port channel never came up. Here is the config I was going to use.
6513
interface Port-channel2
switchport
switchport mode trunk
no shutdown
interface TenGigabitEthernet7/4
description UPLINK to 4500
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
udld port aggressive
wrr-queue bandwidth 20 100 200
priority-queue queue-limit 5
wrr-queue queue-limit 65 15 15
wrr-queue random-detect min-threshold 1 70 100 100 100
wrr-queue random-detect min-threshold 2 70 100 100 100
wrr-queue random-detect min-threshold 3 40 40 50 50
wrr-queue random-detect max-threshold 1 100 100 100 100
wrr-queue random-detect max-threshold 2 100 100 100 100
wrr-queue random-detect max-threshold 3 70 70 80 80
rcv-queue threshold 1 50 50 60 60
rcv-queue threshold 2 60 80 100 100
mls qos trust cos
channel-group 2 mode active
!
interface TenGigabitEthernet8/4
description UPLINK to 4500
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
udld port aggressive
wrr-queue bandwidth 20 100 200
priority-queue queue-limit 5
wrr-queue queue-limit 65 15 15
wrr-queue random-detect min-threshold 1 70 100 100 100
wrr-queue random-detect min-threshold 2 70 100 100 100
wrr-queue random-detect min-threshold 3 40 40 50 50
wrr-queue random-detect max-threshold 1 100 100 100 100
wrr-queue random-detect max-threshold 2 100 100 100 100
wrr-queue random-detect max-threshold 3 70 70 80 80
rcv-queue threshold 1 50 50 60 60
rcv-queue threshold 2 60 80 100 100
mls qos trust cos
channel-group 2 mode active
4510
interface Port-channel2
switchport
switchport mode trunk
no shutdown
interface TenGigabitEthernet5/1
switchport mode trunk
udld port aggressive
service-policy input VoIP-Input-COS-Policy
service-policy output VoIP-Output-Policy-10G
spanning-tree portfast
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
channel-group 2 mode active
no shutdown
!
!
interface TenGigabitEthernet6/1
switchport mode access
udld port aggressive
service-policy input VoIP-Input-COS-Policy
service-policy output VoIP-Output-Policy-10G
spanning-tree portfast
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
channel-group 2 mode active
no shutdown
07-06-2010 12:48 PM
Hello Bill,
I would suggest to start with a simpler configuration:
remove UDLD
remove qos settings
start with physical interface in shut
use interface range to enable both interfaces at the same time and look at the log messages for any related event
Hope to help
Giuseppe
07-06-2010 01:01 PM
Hey Bill ,
on the 4500 series switch , i can see the second port being configured as switch port mode access ... also if you have ports working as a trunk link why would you have them as spanning tree port fast configuration on it.
also , configure all you settings on the interface port channel and just have the physical interface as the part of that channel group.
Thanks
Manish
07-06-2010 01:29 PM
How about this:
6500
Default interface TenGigabitEthernet7/4
interface TenGigabitEthernet7/4
description UPLINK to 4500
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
Default interface TenGigabitEthernet8/4
interface TenGigabitEthernet8/4
description UPLINK to 4500
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
interface Port-channel2
switchport
switchport mode trunk
switchport trunk encapsulation dot1q
wrr-queue bandwidth 20 100 200
priority-queue queue-limit 5
wrr-queue queue-limit 65 15 15
wrr-queue random-detect min-threshold 1 70 100 100 100
wrr-queue random-detect min-threshold 2 70 100 100 100
wrr-queue random-detect min-threshold 3 40 40 50 50
wrr-queue random-detect max-threshold 1 100 100 100 100
wrr-queue random-detect max-threshold 2 100 100 100 100
wrr-queue random-detect max-threshold 3 70 70 80 80
rcv-queue threshold 1 50 50 60 60
rcv-queue threshold 2 60 80 100 100
mls qos trust cos
no shutdown
4500
Default interface TenGigabitEthernet5/1
interface TenGigabitEthernet5/1
description ** CGCORP-6513-SW-3 5-24-2010 **
switchport mode trunk
channel-group 2 mode active
!
!
Default TenGigabitEthernet6/1
interface TenGigabitEthernet6/1
switchport mode trunk
channel-group 2 mode active
interface Port-channel2
description 10Gig to CGCORP-6513-SW-3
switchport
switchport mode trunk
service-policy input VoIP-Input-COS-Policy
service-policy output VoIP-Output-Policy-10G
no shutdown
07-06-2010 02:16 PM
hey bill,
1> are you using ws-x6148(with or without v )-ge-tx switching module -- this one doesnot support more than 1 gbps in aggregated speed ?
2> mention lacp as protocol on both sides ?
3> try enabling "no mls qos channel-consistency" on both ends of the port channel ?
4> double check speed and duplex on both ends , should be same for lacp to work.
5> the spanning tree port priority should be same for all ports in the port channel.
6>The trunking protocol should be same on both sides of the port channel.
7> Please show the output of the following :-
a> sh etherchannel port-channel 2
b>sh etherchannel 2 detail
c> sh etherchannel summary
also, check the ports are forwarding in the spanning tree configuration wise.
Thanks
Manish
07-06-2010 02:33 PM
I see dot1q trunk on Po2 - Te7/4 & Te8/4 - 6500
You should put dot1q on 4500 too , just to make sure. Maybe 4500 doesn't support dot1q. You can check it on the internet for that line card.
Try to use no int Po2 , then use int range and set parameters for group interfaces and issue also
switchport trunk encap dot1q
switchport trunk allowed vlan [vlans]
switchport mode trunk
switchport nonegociate
shutdown
no shutdown
channel-protocol lacp
channel-group 2 mode active
--
for troubleshooting:
show int trunk and paste only those intf
show etherchannel port
check if there is link on all interfaces.
show errdisable
show span sum
Make sure udld is disabled before testing, or put it to normal mode.
If still not working, try to skip the qos conf until you see link.
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