VPC N7K to VPC on 5596

mile.ljepojevic · ‎01-17-2012

I am trying to create this scenario:

Unfortunately, I don't have remote-access to collect configurations, but general it goes:

VPC domain 1 configured on 7K

VPC domain 10 configured on 5K

On 5K-A interf 1/1 goes to 1/1 7K-A, 1/2 goes to 1/2 7K-B.

On 5K-B interf 1/1 goes to 2/1 7K-A, 1/2 goes to 2/2 7K-B

All interfaces are configured as trunks, port-channel 10 mode active

On port-channel 10 there is command VPC 10.

Now the here is the issue:

When I connect all interfaces, all my ethernet interfaces go to suspended state. If I shut-down 5K-B, and have on 5K-A dual homed, still not working.

When I remove VPC from PO interfaceon N5K-A, it start's working, VPC on N7Ks is up and running, while it is just regular Po on N5K-A.

On the other hand when I shut down N7K-B, and remove VPC configuration from Po port on N7K-A and practicaly make it regular Po that will go to two N5Ks, again it start working. On N5K VPC is up and running and on 7K-A I have regular Po interface...

I am pretty sure that I was able to make VPC-to-VPC connection between pair of 7K and pair of 5K, but now it doesn't seem to be working...

Is there anyone with working configuration to share? Also, is there any know issue I should be aware of?

Thanks.

Mile

krun_shah · ‎01-19-2012

Here is my working config from vpc primary switches, secondary switches' config is identical.

NX7K01-agg# sh run int po 2

!Command: show running-config interface port-channel2

!Time: Thu Jan 19 09:33:03 2012

version 5.2(1)

interface port-channel2

description trunk to vblock

switchport mode trunk

switchport trunk allowed vlan 2-100

mtu 9216

vpc 2

NX7K01-agg# sh run int eth 1/3-4 , eth 2/3-4

!Command: show running-config interface Ethernet1/3-4, Ethernet2/3-4

!Time: Thu Jan 19 09:33:27 2012

version 5.2(1)

interface Ethernet1/3

description trunk to vblock

switchport mode trunk

switchport trunk allowed vlan 2-100

mtu 9216

channel-group 2 mode active

interface Ethernet1/4

description trunk to vblock

switchport mode trunk

switchport trunk allowed vlan 2-100

mtu 9216

channel-group 2 mode active

interface Ethernet2/3

description trunk to vblock

switchport mode trunk

switchport trunk allowed vlan 2-100

mtu 9216

channel-group 2 mode active

interface Ethernet2/4

description trunk to vblock

switchport mode trunk

switchport trunk allowed vlan 2-100

mtu 9216

channel-group 2 mode active

NX7K01-agg# sh run vpc

!Command: show running-config vpc

!Time: Thu Jan 19 09:32:50 2012

version 5.2(1)

feature vpc

vpc domain 1

role priority 900

peer-keepalive destination 10.0.10.2 source 10.0.10.1 vrf vpc-keepalive

peer-gateway

auto-recovery

interface port-channel1

vpc peer-link

interface port-channel2

vpc 2

NX5K02# show run vpc

!Command: show running-config vpc

!Time: Thu Jan 19 09:37:44 2012

version 5.0(3)N1(1c)

feature vpc

vpc domain 50

role priority 16384

system-priority 8192

peer-keepalive destination 10.23.101.4

auto-recovery

interface port-channel1

vpc 1

interface port-channel50

vpc peer-link

NX5K02# sh run int eth1/25-28

!Command: show running-config interface Ethernet1/25-28

!Time: Thu Jan 19 09:39:19 2012

version 5.0(3)N1(1c)

interface Ethernet1/25

description To Customer switch # 1

switchport mode trunk

switchport trunk allowed vlan 2-100

channel-group 1 mode active

interface Ethernet1/26

description To Customer switch # 2

switchport mode trunk

switchport trunk allowed vlan 2-100

channel-group 1 mode active

interface Ethernet1/27

description To Customer switch # 1

switchport mode trunk

switchport trunk allowed vlan 2-100

channel-group 1 mode active

interface Ethernet1/28

description To Customer switch # 2

switchport mode trunk

switchport trunk allowed vlan 2-100

channel-group 1 mode active

interface port-channel1

description To Customer switch 7010

switchport mode trunk

switchport trunk allowed vlan 2-100

vpc 1

spanning-tree port type normal

speed 10000