Nexux 7k Port-channels Not Establishing on Downstream Switches

[scottsassin]

We have a pair if Nexus 7k's, c7010s, running version 6.2(12). The inventory is as follows:

Mod  Ports  Module-Type                         Model              Status
---  -----  ----------------------------------- ------------------ ----------
1    48     1000 Mbps Optical Ethernet Module   N7K-M148GS-11      ok
2    8      10 Gbps Ethernet XL Module          N7K-M108X2-12L     ok
3    8      10 Gbps Ethernet XL Module          N7K-M108X2-12L     ok
4    8      10 Gbps Ethernet XL Module          N7K-M108X2-12L     ok
5    0      Supervisor Module-1X                N7K-SUP1           active *
6    0      Supervisor Module-1X                N7K-SUP1           ha-standby
7    8      10 Gbps Ethernet XL Module          N7K-M108X2-12L     ok
8    32     1/10 Gbps Ethernet Module           N7K-F132XP-15      ok
9    32     1/10 Gbps Ethernet Module           N7K-F132XP-15      ok

The fiber is single mode. The transceiver is a SFP-10GBase-LRM on both sides.  When we try to setup a new port-channel, it doesn't establish. We have determined that it is not cable fiber related.

Please let us know if there is any known issue with port-channels on N7k's or where we should search for a solution.

[clsulliv]

Can you post the config for each port-channel and its member interfaces on each N7K?

Can you also provide show lacp counters interface port-channel #?

[scottsassin]

N7K-1 (The one that connects)

interface port-channel163

description vPC to AA03-TC30

switchport

switchport mode trunk

switchport trunk native vlan 996

switchport trunk allowed vlan 1,25-28,50-64,123,223,802,989,994

switchport trunk allowed vlan add 996

vpc 163



port-channel163

Ethernet4/4 82857 89290 0 0 0



N7K-2 (The one that doesn't connect)

interface port-channel163

description vPC to AA03-TC30

switchport

switchport mode trunk

switchport trunk native vlan 996

switchport trunk allowed vlan 1,25-28,50-64,123,223,802,989,994

switchport trunk allowed vlan add 996

vpc 163



no lacp in list

[clsulliv]

Can you post the configs for the interfaces that are supposed to be bundled in Po163?

[scottsassin]

N7K-1 (Connected)

interface Ethernet4/4

description AA-03

switchport

switchport mode trunk

switchport trunk native vlan 996

switchport trunk allowed vlan 1,25-28,50-64,123,223,802,989,994

switchport trunk allowed vlan add 996

channel-group 163 mode active

no shutdown



N7K-2 (Doesn't Connect)

interface Ethernet4/4

description AA-03

switchport

switchport mode trunk

switchport trunk native vlan 996

switchport trunk allowed vlan 1,25-28,50-64,123,223,802,989,994

switchport trunk allowed vlan add 996

channel-group 163 mode active

no shutdown



AA-03

interface Port-channel1

switchport trunk native vlan 996

switchport mode trunk

end

interface TenGigabitEthernet1/0/1

switchport trunk native vlan 996

switchport mode trunk

channel-group 1 mode passive

end

interface TenGigabitEthernet1/0/2

switchport trunk native vlan 996

switchport mode trunk

channel-group 1 mode passive

end

[clsulliv]

Can you check the same lacp counter information from the remote side?

[Georg Pauwen]

Hello,

what is the output of:

show port-channel compatibility-parameters

Can you try 'on' mode on both sides ?