Specifications

ISSU Introduction

New and Enhanced Features in AlliedWare Plus 5.4.4 Major and Minor Versions 87

Manual Phase

This phase comprises rebooting each of the line cards. The diagram shown in Figure 2 on

page 87 illustrates ISSU’s manual phase.

Figure 2: Illustration Showing ISSU’s Manual Phase

Initiating the ISSU Automatic Phase

In order to perform an ISSU, the following conditions must be met:

■ You must have a chassis (or a stack) with more than one CFC960 inserted.

Note that ISSU will not operate with CFC400 cards.

■ There must be no previous ISSU operation in progress.

■ The software specified by the CLI must be a valid AW+ release for the running system;

that is, it must be on the same maintenance branch as that used currently. For

example, 5.4.4.

■ The release that is configured using the boot system command must be available for

all stack members.

Active CFC

New SW

Member CFC

Old SW

Line Card 1 Line Card 2

Active CFC Member CFC

Line Card 1 Line Card 2

1. Reboot some line cards.

This diagram shows line

cards 2 and 4 as having

been rebooted.

2. Reboot all other line cards.

The ISSU process is now

complete.

Line Card 3 Line Card 4

ISSU Overview - Manual Phase

ISSU-Manual Phase.eps

New SW

Software

Version Messages

Software

Version Messages