configure nodealias ports

configure nodealias ports [port_list |all] maxentries entries

Description

This command modifies the per-port maximum number of alias entries in the Node Alias database. Node Alias discovers information about the end systems on a per-port basis. Information from packets from end systems, such as VLANID, source MAC address, source IP address, protocol, etc. are captured in a database that can be queried.

Syntax Description

nodealias Node Alias feature that maps source IP address, MAC address, host name, and protocol on a per port basis.
ports Designates that specified ports should have the specified maximum number of alias entries applied.
port_list Lists the ports to apply the specified maximum number of alias entries to. Designated as a port list separated by comma (,) or dash (-).
all Specifies that all ports have the specified maximum number of alias entries.
maxentries Designates a maximum number of alias entries per port.
entries The value for the maximum number of aliases entries. The default is 8,192 divided evenly by the number of ports in the switch.

Default

If no value is specified for the maximum number of alias entries, the default is 8,192 divided evenly by the number of ports in the switch.

Usage Guidelines

The per-port limit can be set up to 8,192 for all switch ports. For example, if the switch has 32 ports, you can configure the maximum limit as 32 × 8,192. However, the switch can only hold a maximum of 8,192 alias entries per slot.

As a result of snooping one frame, the Node Alias feature may create additional entries to facilitate the searching based on finer details, such as protocol type. For example, when a BGP (Border Gateway Protocol) frame is received, two entries are created: one entry with protocol type IP, and another entry with protocol type BGP.

If you change the maximum alias entries to a value that is less than the number entries in the database, the more recent entries are retained.

Example

The following example specifies a maximum of 100 alias entries on all ports:

configure nodealias ports all maxentries 100

History

This command was first available in ExtremeXOS 22.2.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X590, X620, X690, X870 series switches.