Abstract:
Methods and apparatus for providing a device for forwarding packets in a network are disclosed. A first router and a second router having a shared set of interfaces are provided, enabling the first router and the second router to share forwarding data for forwarding packets on the shared set of interfaces.
Abstract:
A technique implements forwarding operation shortcuts at a switch for multicast data traffic routed between subnetworks of a computer network. A first multicast frame is forwarded from the switch to a router, which peforms route processing and forwarding operations for a packet encapsulated within the frame. During execution of the operations, the router provides multicast flow and additional information concerning the routed packet to the switch in accordance with a novel multicast shortcut control protocol. The information is used by the switch to implement a novel multicast shortcut for subsequent frames received at the switch having the multicast packet flow.
Abstract:
An asynchronous transfer mode (ATM) network or the like providing for dynamic client discovery. Clients transmit client registration messages over the virtual service paths of their associated switches to the central management supervisor. Responsive to receiving the client registration message, the central management supervisor updates its registration tables and transmits a client registration acknowledgement, again over the virtual service path. By using the virtual service path of their associated switch to effect communication with the central management supervisor, there is no need to incur overhead of having the transmission managed by the associated switch's (and intermediate switch's) controller. Rather, the switch merely acts to update the cell's header using the switch's switch fabric. Keep alive messages are exchanged, again over the virtual service path, between the central management supervisor and the client.
Abstract:
Methods and apparatus for providing a device for forwarding packets in a network are disclosed. A first router and a second router having a shared set of interfaces are provided, enabling the first router and the second router to share forwarding data for forwarding packets on the shared set of interfaces.
Abstract:
Methods and apparatus for providing a device for forwarding packets in a network are disclosed. A first router and a second router having a shared set of interfaces are provided, enabling the first router and the second router to share forwarding data for forwarding packets on the shared set of interfaces.
Abstract:
Embodiments of ranking emails within an email system are disclosed. One method of ranking emails within an email system includes monitoring actions of a plurality of email users of the email system, and ranking a plurality of emails sent or received by at least one of the email users based on the monitored actions of the plurality of email users.
Abstract:
A technique enables learning and switching of frames between line cards that are interconnected by a switch fabric of a distributed network switch. The network switch comprises a router and a plurality of forwarding engines, each having an associated forwarding table. The distributed learning and switching technique configures (i) the router to issue an extra copy of a routed frame to an ingress card having a port attached to the source of the frame; (ii) the router to ensure that the contents of a source index field of the routed frame header indicate that the frame originated from the ingress card; (iii) the router to assert a shortcut bit in the header of the routed frame; (iv) a forwarding engine on an egress card having a port attached to the destination of the frame to generate and issue a media access control notification frame to the ingress card and (v) a forwarding engine on the ingress card to mark an established entry in a layer 2 (L2) portion of its forwarding table as ineligible for normal L2 aging policies.
Abstract:
Methods and apparatus for providing a device for forwarding packets in a network are disclosed. A first router and a second router having a shared set of interfaces are provided, enabling the first router and the second router to share forwarding data for forwarding packets on the shared set of interfaces.
Abstract:
Embodiments of ranking emails within an email system are disclosed. One method of ranking emails within an email system includes monitoring actions of a plurality of email users of the email system, and ranking a plurality of emails sent or received by at least one of the email users based on the monitored actions of the plurality of email users.
Abstract:
An asynchronous transfer mode (ATM) network or the like employing a method and apparatus for automatically determining the topology of the network is described. The method and apparatus provides for each switch in the network transmitting on each of its ports link advertisement messages (without processing intervention by intermediate switches). The link advertisement messages are received by neighbor switches and forwarded to a topology manager. The topology manager constructs network topology profile information based on received link advertisement messages. Further, the topology manager is able to verify bidirection links based on the received link advertisement messages.