Brocade Patent Grants

Framework for reliably communicating port information in a system of devices

Granted: June 27, 2017
Patent Number: 9692652
A framework for reliably communicating port information in a system of devices is provided. In one embodiment, each device in the system of devices can create a first record that includes port information pertaining to a plurality of ports of the device, where the plurality of ports are usable for communicatively coupling the device to other devices in the system of devices. The device can further receive, from the other devices in the system of devices, one or more second records…

Techniques for aggregating hardware routing resources in a multi-packet processor networking system

Granted: June 27, 2017
Patent Number: 9692695
Techniques for aggregating hardware routing resources in a system of devices are provided. In one embodiment, a device in the system of devices can divide routing entries in a software routing table of the system into a plurality of route subsets. The device can further assign each route subset in the plurality of route subsets to one or more devices in the system. The device can then install, for each route subset that is assigned to the device, routing entries in the route subset into…

Staged port initiation of inter switch links

Granted: May 23, 2017
Patent Number: 9660864
A fabric having switches interconnected with multiple parallel interswitch links can be configured using staged port bring up. Only one of the multiple parallel interswitch links between any two switches and the corresponding switch ports can be selected and initialized. The fabric can be configured with the selected ISLs. Once the fabric has stabilized, unselected ISLs and the corresponding switch ports can be incrementally initialized. The number of unselected ISLs to be initialized…

Techniques for simplifying stacking trunk creation and management

Granted: May 23, 2017
Patent Number: 9660937
Techniques for simplifying stacking trunk creation and management are provided. In one embodiment, a switch in a stacking system can receive first and second control packets from one or more other switches in the stacking system, where the first and second control packets are received on first and second stacking ports of the switch respectively. The switch can then determine, based on the first and second control packets, whether the first and second stacking ports can be configured as…

Protection switching over a virtual link aggregation

Granted: May 23, 2017
Patent Number: 9660939
One embodiment of the present invention provides a switch. The switch comprises one or more ports and a link management module. The link management module operates a first aggregate link group as an active aggregate link group of a protected virtual link aggregation. This protected virtual link aggregation operates as a single logical channel. An aggregate link group comprises a plurality of logically aggregated links. The first aggregate link group, which represents the logical channel,…

Controlling the operation of server computers

Granted: May 23, 2017
Patent Number: 9661070
A plurality of server computers in a network that includes load balancing processes to enhance performance employs a non-performance related variable, such as power consumption, and modifies the load balancing processes in response to the reading of the non-performance variable. Such variables do not affect the response and performance as perceived by a browsing client but do provide other advantages with in the environment as a whole. The non-performance related variable is employed…

Federated management of intelligent service modules

Granted: May 23, 2017
Patent Number: 9661085
Intelligent services are provided in a storage network using intelligent service modules that can be cabled to a switch external to the switch chassis and yet be managed as part of the switch's logical domain. Data and management communications between the intelligent service module and the core switch are provided through a “soft-backplane” implemented using in-band communications through cabling attached between the switch and the intelligent service module rather than through a…

Increased fabric scalability by designating router groups

Granted: May 16, 2017
Patent Number: 9654422
Is in a Fibre Channel storage area network (SAN) and its included routers, the routers are placed in groups or pods. Each router only contains router port and fabric access data for routers in the same group or pod. In this manner the size of the relevant tables are reduced, which allows for greater expansion of the SAN as a whole. Each router may be programmed by an administrator with a pod value, indicating the pod containing the router. This value may be provided to the Name Server…

Session-based packet routing for facilitating analytics

Granted: May 9, 2017
Patent Number: 9648542
A GTP correlation cluster (GCC) can automatically program a network element to forward copies of packets originating from a mobile device and having a shared attribute to the same analytic server, regardless of the regions into which the mobile device moves. The GCC can monitor attributes of copies of control packets that the network element receives. In response to detecting a changed attribute within a control packet originating from a mobile device, the GCC can update a session map…

Method and system for seamless SCTP failover between SCTP servers running on different machines

Granted: May 2, 2017
Patent Number: 9641415
A Stream Control Transmission Protocol (SCTP) cluster of multiple SCTP-servers is defined in such manner that some of the servers are assigned Active Role where others are assigned Standby Role with the purpose of ensuring uninterrupted SCTP-connections between the SCTP-cluster and any number of SCTP-clients. The Standby Servers use the same Internet Protocol (IP)-address(es) on the SCTP bound interfaces as their assigned Active Server. The Active Servers are effectively communicating to…

Online restoration of a switch snapshot

Granted: April 18, 2017
Patent Number: 9626255
One embodiment of the present invention provides a switch. The switch includes one or more ports, a persistent storage module, a restoration module, and a retrieval module. The persistent storage module stores configuration information associated with the switch in a data structure, which includes one or more columns for attribute values of the configuration information, in a local persistent storage. The restoration module instantiates a restoration database instance in the persistent…

Network layer multicasting in trill networks

Granted: April 18, 2017
Patent Number: 9628293
Systems and techniques for performing network layer multicasting in a TRILL network are described. Some embodiments provide a system that receives multicast packet that includes a network-layer multicast-address. The multicast packet can be received on a first multicast tree associated with a first virtual network. Next, the system can determine, based on the network-layer multicast-address, a second multicast tree associated with a second virtual network over which the multicast packet…

Virtual cluster switching

Granted: April 18, 2017
Patent Number: 9628336
One embodiment of the present invention provides a switch system. The switch includes one or more ports on the switch configured to transmit packets encapsulated based on a first protocol. The switch further includes a control mechanism. During operation, the control mechanism forms a logical switch based on a second protocol, receives an automatically assigned identifier for the logical switch without requiring manual configuration of the identifier, and joins a virtual cluster switch.

Multiple software versions in a switch group

Granted: April 18, 2017
Patent Number: 9628407
One embodiment of the present invention provides a switch. The switch includes one or more ports, a switch group module, a persistent storage module, and a synchronization module. The switch group module maintains a membership in a switch group. The persistent storage module stores configuration information associated with the switch group in a data structure, which includes one or more columns for attribute values of the configuration information, in a local persistent storage. The…

Biasing active-standby determination

Granted: April 11, 2017
Patent Number: 9619349
In computing systems that provide multiple computing domains configured to operate according to an active-standby model, techniques are provided for intentionally biasing the race to gain mastership between competing computing domains, which determines which computing domain operates in the active mode, in favor of a particular computer domain. The race to gain mastership may be biased in favor of a computing domain operating in a particular mode prior to the occurrence of the event that…

Multicast spray over LAG

Granted: April 11, 2017
Patent Number: 9621464
Use of a hash operation based on selected information in the packet to select one of a set of enable vectors. The selected enable vector is then effectively ANDed with the link expansion vector to select the actual links to be used. The enable vectors vary by selecting a different link in the LAG port for each enable vector. Thus the hash is used to vary the link of the LAG port used to transmit the packet for that multicast packet.

Supporting multiple multicast trees in trill networks

Granted: March 28, 2017
Patent Number: 9608833
Systems and techniques for supporting multiple multicast trees are described. Some embodiments provide a system that determines an internal multicast group identifier based on a source address, a multicast address, and a multicast tree identifier field associated with a multicast packet. The system can then forward the multicast packet based on the internal multicast group identifier. Specifically, the system can determine a first set of bits based on the source address and the multicast…

Enabling concurrent operation of tail-drop and priority-based flow control in network devices

Granted: March 28, 2017
Patent Number: 9608918
In one embodiment, a network device is provided that includes a plurality of ports, where each port is associated with a plurality of traffic classes for prioritizing traffic received on the port. The network device further includes a packet buffer memory, an ingress traffic management engine, and an egress traffic management engine. The network device is configured to allow, for each port, concurrent operation of tail-drop and priority-based flow control (PFC) with respect to different…

Non-intrusive diagnostic port for inter-switch and node link testing

Granted: March 21, 2017
Patent Number: 9602197
A diagnostic testing utility is used to perform single link diagnostics tests including an electrical loopback test, an optical loopback test, a link traffic test, and a link distance measurement test. These diagnostics tests can be performed on trunked links and virtual channels and can be performed while QoS is enabled. Additionally the tests can be performed non-intrusively by using a dedicated VC such that regular traffic is not affected by the diagnostics testing.

Global VLANs for fabric switches

Granted: March 21, 2017
Patent Number: 9602430
One embodiment of the present invention provides a switch. The switch includes a virtual local area network (VLAN) configuration module. During operation, the VLAN configuration module maps local resources of the switch and/or locally coupled end device information to a global VLAN identifier, wherein the global VLAN is persistent across a fabric switch. The fabric switch is operable to accommodate a plurality of switches and operates as a single logical switch.