Update Controller Card Software

Overview

Overview

This procedure provides steps for updating the operating system software in each Controller card’s flash memory. Upgrading software does not affect provisioning and other configuration settings unless the update alters the function of the system, such as adding GR-303 functions to a DCS system.

The Access Navigator can hold two (redundant) Controller cards for time-slot interchange. In a protected redundant system, the software in the standby Controller can be updated locally or remotely by a Telnet or RS-232 management session without disrupting service. The other card can then be updated by using a CLI command to switch the standby Controller to active, allowing the second Controller (now in standby) to be updated.

Updating an Access Navigator with an unprotected (non-redundant) Controller will disrupt service. If a service interruption is not acceptable, it is recommended that the Controller card be physically replaced by a Controller card with updated software, as described in Replace Controller Card on page 16-3.

Updates use either Trivial File Transfer Format (TFTP) over an Ethernet IP connection or a terminal emulation program such as Hyper Terminal using Xmodem file transfer protocol. TFTP is much faster than Xmodem.

NOTE: TFTP is strongly recommended for updating software because you can also use TFTP to upload a copy of the Access Navigator configuration settings to protect against accidental loss.

Download Procedures

NOTE: Choose download procedure based on system configuration and type of management session.

￿￿To update a redundant system via TFTP, go to

Update Software via TFTP (Two Controllers) on page 17-3

￿￿To update a redundant system via Xmodem, go to

Update Software via Xmodem (Two Controllers) on page 17-12

￿￿To update a nonredundant system via Xmodem, go to Update Software via Xmodem (One Controller) on page 17-18

17-2

August 2003

Access Navigator - Release 1.8

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Carrier Access Access Navigator user manual Download Procedures, Update Controller Card Software