1 alias =title ALIAS The Alias module provides the means to define an alternate network address which is shared by multiple nodes in the same VMScluster. This makes it possible to treat a VMScluster, or several nodes within a VMScluster, as though it were a single node in the network. The alias entity is the top-level entity in the hierarchy belonging to the Alias module. The entity is the root from which alias port subentities may be defined. 2 port =title ALIAS PORT An alias port entity provides the means to define an alternate network address for this node, which is shared by other nodes in the same VMScluster. When the alias port entity is enabled, this node becomes an active member of the VMScluster alias it specifies. The first node in the VMScluster to create an Alias Port for a particular alias address causes that alias to be created. Subsequent nodes which create an Alias Port for the same alias establish connections ports to that alias. The alias becomes active when the first node enables its Alias Port for that alias. When a node enables an Alias Port, that node registers itself with other members of the alias. 3 character =title Characteristic Attributes SELECTION WEIGHT The number of sequential incoming connects to be passed to this member node in the round-robin sequence before proceeding to the next member node in the sequence. A value of zero means this node is not eligible to receive incoming connections to this Alias address. Selection Weight is used to apportion incoming alias connections according to the capacity of each Alias member. Nodes with greater capacity should have larger values of Selection Weight, while local area VMScluster satellites should generally have a value of zero. Values between 0 and 10 are suggested. The NSP maximum transport connection value determines the number of connections on an alias member. If the Alias Port is enabled, changing the NSP maximum transport connection value has no effect. ! OUTGOING DEFAULT ! ! Set to the value true, this port name is used when making connections ! out of the VAXcluster. Only one alias can be the default for a system. 3 status =title Status Attributes NODE-ID The 6-byte node id field in the Alias pseudo-node's NSAP. STATE Specifies the status of the alias port entity. OFF - The alias port entity is disabled ON - The alias port entity is enabled