11-01-2012 09:28 AM - edited 03-01-2019 07:11 AM
Hello
I was wondering if somebody could help me please. I have two 5010 Nexus switch and a VPC domain. I have connected each of the two 2960-s via SFP modules to each of the Nexus 5010 switches.
I am using LACP on the below channels.
I have added each of the two connections from the first 2960 into a port channel group. When I check the port-channel summary information the port is always down. I can never get the port channel to come up with LACP and see no operation members.
Interface information
interface Ethernet1/4
description Trunk Port to DCSV01
switchport mode trunk
spanning-tree port type network
speed 1000
channel-group 10 mode active
interface Ethernet1/5
description Trunk Port to DCSV02
switchport mode trunk
spanning-tree port type network
speed 1000
channel-group 10 mode active
Port Channel Information
interface port-channel10
switchport mode trunk
spanning-tree port type network
speed 1000
vpc 10
Port Channel Summary
Flags: D - Down P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended r - Module-removed
S - Switched R - Routed
U - Up (port-channel)
M - Not in use. Min-links not met
--------------------------------------------------------------------------------
Group Port- Type Protocol Member Ports
Channel
--------------------------------------------------------------------------------
1 Po1(SU) Eth NONE Eth1/1(P)
2 Po2(SU) Eth NONE Eth1/2(P)
3 Po3(SU) Eth NONE Eth1/3(P)
7 Po7(SU) Eth LACP Eth1/17(P) Eth1/18(P)
10 Po10(SD) Eth LACP Eth1/4(I) Eth1/5(I)
100 Po100(SU) Eth LACP Eth1/12(P)
200 Po200(SU) Eth LACP Eth1/13(P)
Any help would be appeciated.
Robin
11-01-2012 12:43 PM
Robin-
A couple of things to try-
Check your vcp status and make sure it is up
Change the LACP from on to passive (on all switches)
Break LACP and test that each 2960 can trunk to the 5K's successfully
11-14-2012 05:51 PM
Hi Robin
From the output it looks like both ports: eth 1/4 and 1/5 are in "i"ndividual state - which means that both of them receives different LACP id (LACP packet from different switches):
10 Po10(SD) Eth LACP Eth1/4(I) Eth1/5(I)
Also from the interface description 1/4 connected to DCSV01, and 1/5 to DCSV02 - seems like 2 different switches. That is the reason why ports are in the individual state.
To fix this you need to change the config as following:
on both n5k
eth1/4 connected to DCSV01
eth1/5 connected to DCSV02
interface Ethernet1/4
description Trunk Port to DCSV01
switchport mode trunk
spanning-tree port type network
speed 1000
channel-group 10 mode active
interface Ethernet1/5
description Trunk Port to DCSV02
switchport mode trunk
spanning-tree port type network
speed 1000
channel-group 11 mode active
nterface port-channel10
switchport mode trunk
spanning-tree port type network
speed 1000
vpc 10
nterface port-channel11
switchport mode trunk
spanning-tree port type network
speed 1000
vpc 11
That should resolve the issue.
HTH,
Alex
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