Reference Guide

408 | Interfaces
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To configure IP addresses on a Management interface, use the following command in the
MANAGEMENT INTERFACE mode:
Each Management interface must be configured with a different IP address. Unless the
management route
command is configured, you can only access the Management interface from the local LAN. To access the
Management interface from another LAN, the
management route command must be configured to point to
the Management interface.
Alternatively, you can use
virtual-ip to manage a system with one or two stack units. A virtual IP is an IP
address assigned to the system (not to any management interfaces) and is a CONFIGURATION mode
command. When a virtual IP address is assigned to the system, the active management interface is
recognized by the virtual IP address—not by the actual interface IP address assigned to it. During a
failover, you do not have to remember the IP address of the new management interface—the system will
still recognizes the virtual-IP address.
Important Things to Remember — virtual-ip
• virtual-ip is a CONFIGURATION mode command.
• When applied, the management port assumes the virtual IP address. Executing
show interfaces and
show ip interface brief commands on the primary management interface will display the virtual IP
address and not the actual IP address assigned on that interface.
• A duplicate IP address message is printed for management port’s virtual IP address on a failover. This
is a harmless error that is generated due to a brief transitory moment during failover when both stack
units’ management ports own the virtual IP address, but have different MAC addresses.
• The primary management interface will use only the virtual IP address if it is configured. The system
can not be accessed through the native IP address of the primary management interface.
• Once the virtual IP address is removed, the system is accessible through the native IP address of the
primary management interface.
• Primary and secondary management interface IP and virtual IP must be in the same subnet.
Command Syntax Command Mode Purpose
ip address ip-address mask
INTERFACE Configure an IP address and mask on the
interface.
•
ip-address mask: enter an address in
dotted-decimal format (A.B.C.D), the
mask must be in /prefix format (/x)