Ether channel Issues

[mohamed sebaey]

Dear All

I have a big issue on Ether Channel between 6k to 5k . I found that some of ports "w"  , i am unable to get the reason. My design is Cisco core switch VSS with two Cisco nexus 5k with vpc configuration . I have configure L2 port channel 108 between all "Cisco VSS , Cisco n5k VPC" .

VSS Core switch

VSS core switch 1

interface Port-channel109
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk

interface TenGigabitEthernet1/2/1
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet1/2/2
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet1/2/3
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet1/2/4
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active

VSS core switch 2
interface TenGigabitEthernet2/2/1
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet2/2/2
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet2/2/3
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active
!
interface TenGigabitEthernet2/2/4
 switchport
 switchport trunk allowed vlan 1-220
 switchport mode trunk
 channel-group 109 mode active

---------------------------------------

VPC on Nexus 1

interface port-channel109
  switchport mode trunk
  switchport trunk allowed vlan 1-220

interface Ethernet1/18
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/19
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/26
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/27
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

--------------------------------------------------------------

VPC on Nexus 2

interface port-channel109
  switchport mode trunk
  switchport trunk allowed vlan 1-220

interface Ethernet1/18
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/19
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/26
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

interface Ethernet1/27
  switchport mode trunk
  switchport trunk allowed vlan 1-220
  channel-group 109 mode active

----------------------------------------------------------------------

Q1- I have issue on port channel not all ports are in p in bundle  mode  , only ports which connected to main core 1 on p  bundle mode , but other ports which connected to second switch "w" waiting to be aggregated ?. Is it ok to put all etherchannel on same port channel 109?.

Q 2- I am going to integrate with 2 X ASR , i have to configure 2 port channels from 2 X ASR  to VSS or 1 etherchannel ?

thanks

[Leo Laohoo]

Depending on the line card of the 6500, you could be missing the command "switchport trunk encap dot1q".

[mohamed sebaey]

Hello

Thanks Leo for your answer , but no it isn't recognized command under port configuration. Can u help me for the below question please:-

Q1- Is it ok to put all Cisco VSS ( two core switch 6K and 2 VPC " 2 nexus switches) on same port channel 109?.

Q 2- I am going to integrate with 2 X ASR  , i have to configure 2 port channels from 2 X ASR  to VSS or 1 etherchannel ?

thanks

[mohamed sebaey]

hi

Please advise .

thanks

[pille1234]

Q1

Your config lacks the vpc ID. Add

vpc 109 

On both Nexus switches under the port channel 109 interface. 

Q2

You need 2 port channel, each going from ASR to both VSS switches. 

Regards