Enterasys Networks 9034313-07 manual Configuring Node Aliases, Show nodealias config

Configuring Node Aliases

Configuring Node Aliases

The node alias feature enables administrators to determine the MAC address and location of a given end‐station (or node) using the node’s Layer 3 alias information (IP address) as a key. With this method, it is possible to determine that, for instance, IP address 123.145.2.23 is located on switch 5 port 3.

The passive accumulation of a networkʹs node/alias information is accomplished by “snooping” on the contents of network traffic as it passes through the switch fabric.

In the C3, node data is automatically accumulated into the ct‐alias mib, and by default this feature is enabled. The NetSight Console Compass utility and Automated Security Manager (ASM) use the information in the node/alias MIB table.

Itʹs important to make sure that inter‐switch links are not learning node/alias information, as it would slow down searches by the NetSight Compass and ASM tools and give inaccurate results.

Purpose

To review, disable, and re‐enable node (port) alias functionality on the switch.

Commands

For information about...	Refer to page...
show nodealias config	14-40
set nodealias	14-41
clear nodealias config	14-42

show nodealias config

Use this command to display node alias configuration settings on one or more ports.

Syntax

show nodealias config [port-string]

Parameters

port‐string (Optional) Displays node alias configuration settings for specific port(s).

Defaults

If port‐string is not specified, node alias configurations will be displayed for all ports.

Mode

Switch command, read‐only.

Example

This example shows how to display node alias configuration settings for ports ge.2.1 through 9:

C3(rw)->show nodealias		config ge.2.1-9	Used Entries	Status
Port Number	Max	Entries

14-40 Logging and Network Management