Automatic resolution of virtual network instance to VLAN mapping conflicts in dual-homed deployments in a dynamic fabric automation network architecture

摘要

In accordance with one example embodiment, there is provided a system configured for virtual local area network (VLAN) blocking on a virtual port channel (vPC) member link to handle discrepant virtual network instance (VNI) to VLAN mappings. In other embodiments, the system can be configured for providing Virtual Switch Interface Discovery Protocol (VDP) and virtual switch enhancements to accommodate discrepant VNI to VLAN mappings. In another example embodiment, an apparatus is provided that includes a processor, and a memory coupled to the processor, where the apparatus is configured such that if a server is connected through a virtual port channel, a VDP is used to notify the server of different VNI to VLAN mappings. In another embodiment, the apparatus can extend a VDP Filter Info Field to carry a set of VLANs mapped to a VNI, keyed by leaf MAC addresses that serve as bridge identifiers.

主权项

1. A method for managing virtual network instance (VNI) to virtual local area network (VLAN) mapping conflicts for a dual-homed server communicably connected to a first peer leaf over a first port and a second peer leaf over a second port, the method comprising:
receiving, at the dual-homed server, information identifying a first VNI as being mapped to a first VLAN at the first peer leaf and the first VNI as being mapped to a second VLAN at the second peer leaf, wherein the information is transported in an information field of a virtual station interface (VSI) discovery and configuration protocol (VDP) response from a bridge running the VDP protocol; transmitting, from the dual-homed server, a first frame over the first port to which the first peer leaf is connected using the first VLAN; when a second frame is to be transmitted to the second peer leaf, transmitting, from the dual-homed server, the second frame over the second port to which the second peer leaf is connected using the second VLAN.