Specifies how often an IS-IS interface sends hello messages to its IS-IS neighbors.
<interface xmlns="urn:brocade.com:mgmt:brocade-interface">
	<ethernet>
		<name>{req_val}</name>
		<interface-eth-isis-conf xmlns="urn:brocade.com:mgmt:brocade-isis">
			<intf-isis>
				<interface-isis>
					<interface-hello-interval>
						<interface-hello-interval-level>{req_val}</interface-hello-interval-level>
					</interface-hello-interval>
				</interface-isis>
			</intf-isis>
		</interface-eth-isis-conf>
	</ethernet>
</interface>