Avaya Inc.

Lawrence DiBurro

Mohnish Anumala

Debin Zhang

Alexandros Moisiadis

Shu Ching Shieh

Prasad Vadassery

Sergei Lissianoi

A method, apparatus and computer program product for providing a variable tunnel keep-alive interval is presented. A tunnel keep-alive packet for a first tunnel is received at a first switching device. A Quality of Service (QoS) value of the keep-alive packet ishcekce. A determination is made regarding whether the QoS value corresponds to a QoS value of network control traffic, and when the QoS value of the keep-alive packet is lower than the QoS value of the network control traffic then a value of a tunnel keep-alive interval is increased.

Tunnel keep-alive timeout mechanism based on quality of service (QoS) value of received keep-alive messages

A method, apparatus and computer program product for efficiently transmitting tunnel keep-alive messages is presented. A tunnel keep-alive trigger message is provided from a control processor of a multi-processor network switching device to at least one forwarding engine of the network switching device. The at least one of the forwarding engines produces a tunnel keep-alive packet as a result of receiving the tunnel keep-alive trigger message from the control processor. The at least one forwarding engine forwards the tunnel keep-alive packet on all tunnels the forwarding engine is servicing.

Mechanism for efficiently transmitting tunnel keep-alive messages

A method, apparatus and computer program product for providing Routed Split Multi Link Trunking (RSMLT) for Wireless Local Area Network (WLAN) tunnels is presented. A first and second network switch learn data associated with each other, wherein the first network switch and the second network switch operate concurrently. The first network switch terminates a WLAN Tunnel. The data is synchronized between the first network switch and the second network switch, wherein the data includes MAC Addresses, Internet Protocol (IP) interface addresses, Virtual Local Area Network (VLAN) associations, WLAN tunnel assignments and Network switch Internet Protocol (IP) addresses. Load sharing of tunnel data packets is performed by the first and the second network switch. Tunnel control packets received by the second network switch are forwarded to the first network switch over an Inter Switch Trunk (IST).

Packet forwarding function of a mobility switch deployed as routed SMLT (RSMLT) node

A method, apparatus and computer program product for providing failover for a point to point tunnel for wireless local area network split-plane environments is presented. A second network switch learns first data associated with a third network switch and the second network switch terminates a tunnel. The third network switch learns second data associated with the second network switch. The first and second data are synchronized between the second network switch and the third network switch. The second network switch and the third network switch load sharing tunnel data packets. The third network switch forwards tunnel control packets received by the third network switch to the second network switch. A failure relating to the second network switch is detected and a new tunnel is established with the third network switch.

Method and apparatus providing failover for a point to point tunnel for wireless local area network split-plane environments

A method, apparatus and computer program product for performing Routed Split Multi-Link Trunking Resiliency for Wireless Local Area Network split-plane environments is presented. A first network switch learns first data associated with a second network switch and the first network switch terminates an Access Tunnel (AT). The said second network switch learns second data associated with said first network switch. The first and second data are synchronized between the first network switch and the second network switch. The first network switch and the second network load sharing tunnel data packets. The second network switch forwards tunnel control packets received by the second network switch to the first network. A failure relating to said first network switch is detected and a new AT is established with the second network switch.

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Haverhill, MA, United States of America

Lawrence DiBurro