Specifications

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Cisco MGX 8800/8900 Series Software Configuration Guide
Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005
Chapter 1 Preparing for Configuration
Guidelines for Creating an IP Address Plan
• The software for each switch expects to find each card type in specific slots.
• Redundant card configurations can require that redundant cards be placed in a specific relationship
to each other.
• Redundant line configurations can require additional hardware and require that redundant lines be
be placed in a specific relationship to each other.
Refer to the table titled “Valid Slot Installation Options” in Cisco MGX 8800/8900 Hardware
Installation Guide, Releases 2 - 5.1. This table shows where each card can be installed, and it shows
which front and back cards are compatible with each other.
Note Before starting switch configuration, take some time to review the card redundancy and line redundancy
planning information in this same guide. It is wise to review the hardware installation before you begin
configuration. If the hardware installation does not support the planned software configuration, either
the hardware installation or the software configuration must change.
Guidelines for Creating an IP Address Plan
This section discusses local connectivity through the PXM LAN port. For information on using terminal
servers, modems and CWM to remotely access the switch, see Appendix C, “Supporting and Using
Additional CLI Access Options.”
You can access the switch through three types of user interfaces: CLI, SNMP, and CWM. The switch
has local ports in support of these interfaces, and each of these ports has a user-configurable IP address.
The local ports are as follows:
• Console Port (CP)
• Maintenance Port (MP)
• LAN 1 port
• ATM interface
Basic switch configuration and management can be completed by using a local terminal connected to the
console port. However, to configure and manage the switch from a LAN connection, a modem
connection, or with CWM, you need define an IP address for the appropriate interface.
MGX switches provide two IP addresses for LAN connections. The boot IP address enables switch
management when a PXM is in boot mode, which means that it has only loaded the boot software. The
disk IP address enables switch management only after the switch has loaded and is running the runtime
software.
A typical switch configuration requires either one or two IP addresses for LAN access. When the switch
hosts a single PXM card, use just one IP address and assign it to both the boot and disk IP address options
(more on this later in this section).
When the switch uses two PXM cards, you can use one or two IP addresses. Figure 1-5 shows a
redundant PXM configuration that uses two IP addresses. In a MGX 8850 (PXM1E/PXM45), MGX
8850/B, or MGX 8950 switch, the redundant PXM cards would be in slots 7 and 8. In a MGX 8830
switch or MGX 8830/B, the redundant PXM cards would be in slots 1 and 2.