Everybody who has done something with Routing and VPC has come across the site of Brad Hedlund.
Since version Cisco NX-OS Release 7.2(0)D1(1) (only on F2e and F3 modules) you can enable the layer3 peer-router. This should enable you to run routing neighborship over VPC ports.
Per explanation on this link Configuring vPCs it should be possible to connect 2 vpc clusters to each other. I have not yet configured it with this setup, I would like to know if anybody has some experience with this?
Spoke to Cisco and they confirmed that they are now supporting Layer3 peering over VPC, this works only for the VPC peers and only from NX-OS Release 7.2(0)D1(1). At the time of writing, they advised to use 7.2(1)D1(1).
Configuring Layer 3 over vPC for F2E and F3 Modules
Before You BeginEnsure that the peer-gateway in enabled and configured on both the peers and both the peers are running image that supports Layer 3 over vPC feature. If you enter the layer3 peer-router command without enabling the peer-gateway feature, a syslog message is displayed recommending you to enable the peer-gateway feature.
Ensure that the peer link is up.
The following example shows how to configure a Layer 3 over vPC for F2, F2E, and F3 modules:
switch# configure terminal switch(config)# vpc domain 5 switch(config-vpc-domain)# layer3 peer-router switch(config-vpc-domain)# exit switch(config)#
This example shows how to verify if the Layer 3 over vPC for F2, F2E, and F3 modules feature is configured:
switch# show vpc brief vPC domain id : 1 Peer status : peer adjacency formed ok vPC keep-alive status : peer is alive Configuration consistency status : success Per-vlan consistency status : failed Type-2 consistency status : success vPC role : secondary Number of vPCs configured : 2 Peer Gateway : Enabled Peer gateway excluded VLANs : - Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Auto-recovery status : Enabled (timeout = 240 seconds) Operational Layer3 Peer : Enabled