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VPC N7K to VPC on 5596


I am trying to create this scenario:

VPC7K-VPC5K.jpg

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

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Bronze

VPC N7K to VPC on 5596

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

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