Patent application number | Description | Published |
20140064148 | Distributed Proxy Addressing Operations - An addressing redirection mechanism is initiated at a switch or a router in a computing network in order to enable the switch to perform one or more distributed proxy addressing operations on behalf of a connected router. An address request transmitted from a first host device to a second host device to obtain addressing information of the second host device is received at the switch, and the switch inspects the address request to identify addressing information for the first host device. The switch is configured to forward the addressing information for the first host device to the router | 03-06-2014 |
20140075047 | Network-Assisted Virtual Machine Mobility - A first addressing message is received at a first switch in a network fabric indicating that a first virtual machine has undergone migration from connection to a first virtual switch at a first server to connection to a second virtual switch at a second server. A route advertisement message is then transmitted from the first switch to at least a second switch in the network fabric. This route advertisement is configured to cause the second switch to transmit a second addressing message to a second virtual machine connected to the first virtual switch. The second addressing message provides the second virtual machine with updated addressing information for the first virtual machine. A third addressing message is also transmitted from the first switch to the first virtual machine to provide the first virtual machine with updated addressing information for the second virtual machine. | 03-13-2014 |
20140105029 | DETECTION OF CABLING ERROR IN COMMUNICATION NETWORK - In one embodiment, a method at a network device includes receiving a link layer advertisement, comparing information in the link layer advertisement with connectivity information stored at the network device, and based on the comparison, determining if there is a cabling error between the network device and a link peer transmitting the link layer advertisement. An apparatus and logic are also disclosed herein. | 04-17-2014 |
20140219079 | PROVISIONING OF A NEW NODE JOINING AN EXISTING CLUSTER IN A DATA CENTER ENVIRONMENT - A method is provided in one example embodiment and includes identifying for a new node added to a communications network a plurality of existing network nodes respectively connected to one of a plurality of ports of the new node and capable of implementing a particular routing protocol; selecting one of the identified existing network nodes to serve as a designated forwarder (“DF”) for the new node; performing a power on auto provisioning (“PoAP”) procedure in connection with the new node; and opening the ports of the new node to which the identified existing network nodes are connected. | 08-07-2014 |
20140294005 | Using a Virtual Internet Protocol Address to Represent Dually Connected Hosts in an Internet Protocol Overlay Network - Techniques are presented herein for distributing address information of host devices in a network. At a first router device, a packet is received from a first host device that is destined for a second host device. The first host device is dually-connected to the first router and a second router device. The second router device is part of a virtual port channel pair with the first router device. A message is sent to the second router device, the message indicating that the first host device is connected to the second router device. The packet is encapsulated with an overlay header and is sent to a third router device that is connected to the second host device. The encapsulated packet contains a Layer 2 address associated with the first host device and a Layer 3 address associated with the first host device. | 10-02-2014 |
20140314079 | Efficient Multicast Delivery to Dually Connected (VPC) Hosts in Overlay Networks - In a mesh-based connected data center network architecture, a mechanism is provided to allow efficient delivery of IP multicast frames within the network. Described approaches avoid replication into VLANs (or SVIs) across the fabric by using the outer encapsulated tree to identify trees on which to replicate the traffic. Replication may be performed at the furthest point from the source (via routing or bridging). Also, multicast traffic may be distributed to dually connected (vPC) hosts on links from various network devices. | 10-23-2014 |
20150046572 | Extending Virtual Station Interface Discovery Protocol (VDP) and VDP-Like Protocols for Dual-Homed Deployments in Data Center Environments - Techniques are provided for provisioning network resources for virtual machines. At a first switch device, a configuration request message is received from a virtual switch to provision virtual network segmentation resources for a virtual machine managed by the virtual switch. The first switch device provisions the virtual network segmentation resources for the virtual machine. The first switch devices sends to a second switch device a first synchronization message that includes information describing the virtual network segmentation resources. The second switch device is a peer of the first switch device. The first switch device also sends to the second switch device a second synchronization message that includes state information indicating that the first switch device is in an active state for servicing the virtual machine and that the second switch device is to be placed in a dormant state for servicing the virtual machine. | 02-12-2015 |
20150063353 | IMPLEMENTATION OF VIRTUAL EXTENSIBLE LOCAL AREA NETWORK (VXLAN) IN TOP-OF-RACK SWITCHES IN A NETWORK ENVIRONMENT - An example method for implementation of virtual extensible local area network (VXLAN) in top-of-rack (ToR) switches in a network environment is provided and includes receiving a packet encapsulated with a VXLAN header having an unknown virtual tunnel endpoint (VTEP) Internet Protocol (IP) address in a network environment, and installing an entry at an index location of a forwarding table. The index location includes an encoding of the VTEP-IP address as a VTEP index (VTEP-IDX), and the entry maps a VXLAN interface to an IP address associated with a VXLAN network interface (VNI). In specific embodiments, the VTEP-IDX is logN bits, where N is a size of the forwarding table. The forwarding table indicates a destination VTEP IP address when encapsulating the packet, and the source VTEP IP address when decapsulating the packet. | 03-05-2015 |