Abstract: Techniques are described for automatic provisioning of inter-control center communications protocol (ICCP) and automatic provisioning of virtual local area networks (VLANs) on an inter-chassis link (ICL) between multi-chassis link aggregation group (MC-LAG) peer devices. The MC-LAG peer devices may comprise two network devices included in an MC-LAG that is multi-homed to each of a plurality of MC-LAG client devices. In one example, the disclosed techniques enable detection of one or more VLANs configured on a multi-homed interface of the MC-LAG, and automatic provisioning of the detected VLANs on the ICL within the MC-LAG. In another example, the disclosed techniques enable determination of one or more ICCP parameters from MC-LAG configuration information, and automatic provisioning of ICCP over the ICL according to the determined ICCP parameters. The MC-LAG may be included within an enterprise switch of an enterprise network or within a data center switch of a data center network.

Abstract: A network device may receive, from a first control device, a first value for a control plane parameter used to configure a control plane associated with the network device. The network device may receive, from a second control device, a second value for the control plane parameter. The second value may be different from the first value. The network device may determine that the second value is different from the first value. The network device may determine a rule, associated with the control plane parameter, based on determining that the second value is different from the first value. The network device may determine, based on the rule, a third value for the control plane parameter. The network device may transmit, to another network device, a packet that includes the third value for the control plane parameter.

Abstract: Techniques are described for automatic provisioning of virtual local area networks (VLANs) on server-facing ports of access switches included in a data center network. Conventionally, VLANs are pre-configured on all server-facing ports of access switches. The techniques described in this disclosure enable automatic provisioning of VLANs on server-facing ports of access switches triggered by traffic received on the ports. The techniques include a feature in a forwarding plane of an access switch that is configured to detect data packets received for an unknown VLAN on a port, and notify a control plane of the access switch of the unknown VLAN on the port. In response to the notification from the forwarding plane, the control plane may authorize and provision the VLAN on the port. The techniques described in this disclosure include hardware-assisted software provisioning of an unknown VLAN on a given port of an access switch.