Abstract:
The present disclosure is directed towards systems and methods for supporting Simple Network Management Protocol (SNMP) request operations over clustered networking devices. The system includes a cluster that includes a plurality of intermediary devices and an SNMP agent executing on a first intermediary device of the plurality of intermediary devices. The SNMP agent receives an SNMP GETNEXT request for an entity. Responsive to receipt of the SNMP GETNEXT request, the SNMP agent requests a next entity from each intermediary device of the plurality of intermediary devices of the cluster. To respond to the SNMP request, the SNMP agent selects a lexicographically minimum entity. The SNMP agent may select the lexicographically minimum entity from a plurality of next entities received via responses from each intermediary device of the plurality of intermediary devices.
Abstract:
The present application is directed towards distributing multicast routing packets in a cluster environment utilizing link aggregation. In a cluster environment, a plurality of devices may be connected to an upstream router or switch as a single “virtual” device having a plurality of connections as part of a link aggregation group, allowing the router to easily and efficiently distribute packets among the connections. Multicast routing packets may be sent via only a single connection of the link aggregation group, and accordingly, a recipient device may distribute the multicast routing packet to other devices. To distinguish between a newly received routing packet from the router and an internally distributed routing packet from a first device, the first device may insert a predetermined identifier into a MAC address of the routing packet.
Abstract:
The present disclosure is directed towards systems and methods for supporting Simple Network Management Protocol (SNMP) request operations over clustered networking devices. The system includes a cluster that includes a plurality of intermediary devices and an SNMP agent executing on a first intermediary device of the plurality of intermediary devices. The SNMP agent receives an SNMP GETNEXT request for an entity. Responsive to receipt of the SNMP GETNEXT request, the SNMP agent requests a next entity from each intermediary device of the plurality of intermediary devices of the cluster. To respond to the SNMP request, the SNMP agent selects a lexicographically minimum entity. The SNMP agent may select the lexicographically minimum entity from a plurality of next entities received via responses from each intermediary device of the plurality of intermediary devices.
Abstract:
The present application is directed towards systems and methods for using equal cost multi-path routing for traffic distribution in a cluster environment. Each intermediary device of a cluster may advertise, via a routing protocol to a router, a corresponding internet protocol (IP) address of a virtual server and one or more connection metrics having predetermined values. Upon determining that another intermediary device of the cluster is unavailable, each active device may re-advertise the IP address of the virtual server executing on the intermediary device and the one or more connection metrics with the previously advertised value reduced by a predetermined amount. In some embodiments, each active device may wait a predetermined time period, such as a time period for expiration of routing protocol tables, and then re-advertise the IP address of the virtual server executing on the intermediary device and the one or more connection metrics with the predetermined values.
Abstract:
The present disclosure is directed towards systems and methods for validating a configuration across a cluster of intermediary devices. Within the cluster, a configuration change is entered at one node and propagated to the remaining nodes of the cluster. Before propagation, the new configuration is validated. The systems and methods include creating, on a first intermediary device, a configuration to be propagated to a plurality of routing daemons; executing, by a validation module of the first intermediary device, the configuration on a plurality of pseudo routing daemons, each pseudo routing daemon of the plurality of pseudo routing daemons corresponding to the routing daemon of a corresponding intermediary device of the cluster; and determining from results of executing the second configuration whether to propagate the second configuration to each routing daemon.