Specifications

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Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide

Release 3, Part Number 78-14788-01 Rev. C0, January 2004

Chapter 2 Configuring General Switch Features

Setting the LAN IP Addresses

The switch uses two types of IP addresses for Ethernet LAN access:

• Boot IP addresses

• Node or disk IP addresses

The following sections describe how to set these addresses. For information on how the switch uses these

addresses and how to choose the addresses, see Chapter 1, “Guidelines for Creating an IP Address Plan.”

Note The switch also supports IP addresses for dial-in and ATM inband access. For more information on these

access options, see Appendix C, “Supporting and Using Additional CLI Access Options.”

Setting the Boot IP Address

The boot IP address is the LAN port IP address a PXM45 card uses when it first starts up. If the switch

cannot fully start, this IP address can be used to access the switch in boot mode. When the switch is

properly configured (with different addresses set for the boot IP and LAN IP addresses), the boot IP

address can also be used to access the standby PXM45 card directly, while the disk IP address can be

used to access the active PXM45.

Note Because the LAN IP address is stored on the PXM45 hard disk and is not used until after the runtime

software loads, Cisco recommends that the boot IP address be set in every switch. This enables switch

management over Ethernet when the boot software has loaded.

To set the boot IP address, use the bootChange command, which allows you to also define a remote boot

location, a default gateway IP address, and a username and password for the remote boot location.

Step 1 Establish a configuration session using a user name with SUPER_GP privileges or higher.

Step 2 Enter the bootChange command as shown in the following example.

pop20two.7.PXM.a > bootChange

'.' = clear field; '-' = go to previous field; ^D = quit

boot device : lnPci

In this example, the switch is waiting for you to take action on the boot device option. Enter a period <.>

to clear the current value (lnPci), enter minus <-> to go back to the previous field (although this is the

first of 14 fields), or enter Return to accept the current value and display the next option.