US 8,135,832 B2Granted

Method, system and apparatus for detecting multiple active devices in stack

AssigneeHangzhou H3C Technologies Co., Ltd.

InventorXiaolong Hu

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Abstract

Embodiments of the present invention disclose a method for detecting multiple Active devices in a stack. In the method, a new Active device generates a Link Aggregation Control Protocol (LACP) packet when a stacking link is in failure, the LACP packet contains a bridge MAC address and a member number of the new Active device; the new Active device transmits the LACP packet to a stacking member through an access switch; and the stacking member detects collision of multiple Active devices according to the MAC address and the member number and enters a Recovery state. In the present invention, by containing the bridge MAC, the Active ID and the configuration dividing identifier in the extended field of the LACP packet, the collision of multiple Active devices in a distributed stack can be detected.

Claims14

Dependent claims

A method for detecting multiple Active devices in a stack, comprising:

generating, by a new Active device, a Link Aggregation Control Protocol (LACP) packet when a stacking link is in failure, the LACP packet containing a bridge MAC address and a member number of the new Active device;
transmitting, by the new Active device, the LACP packet to a stacking member through an access switch;
and
determining, by the stacking member, whether collision of multiple Active devices exists according to the bridge MAC address and the member number,
wherein determining, by the stacking member, whether the collision of multiple Active devices exists according to the bridge MAC address and the member number comprises:
determining the collision of multiple Active devices does not exist when a bridge MAC address of the stacking member is different from the bridge MAC address contained in the LACP packet;
and
determining the collision of multiple Active devices exists when the bridge MAC address of the stacking member is the same as the bridge MAC address contained in the LACP packet and a member number of the stacking member is different from the member number contained in the LACP packet.

5 more elements

A method for detecting multiple Active devices in a stack, comprising:

storing, by an access switch, a list comprising a bridge MAC address and a member number of each stacking member;
receiving, by the access switch, a Link Aggregation Control Protocol (LACP) packet sent by a new Active device when a stacking link is in failure, the LACP packet containing a bridge MAC address and a member number of the new Active device;
determining, by the access switch, whether collision of multiple Active devices exists according to the bridge MAC address and the member number in the LACP packet and the bridge MAC addresses and the member numbers in the list,
wherein determining, by the access switch, whether collision of multiple Active devices exists according to the bridge MAC address and the member number in the LACP packet and the bridge MAC addresses and the member numbers in the list comprises:
determining the collision of multiple Active devices does not exist when each of the bridge MAC addresses in the list is different from the bridge MAC address contained in the LACP packet;
and
determining the collision of multiple Active devices exists when the bridge MAC address in the list is the same as the bridge MAC address contained in the LACP packet and the member number of the stacking member in the list is different from the member number contained in the LACP packet.

4 more elements

Dependencies are inferred from the claim text.