Technical data

215
Note:
It is strongly suggested that you use the Configuration Manager’s
Upgrade/Backup
tool to upgrade or
backup the kernel. The Configuration Manager’s tool is more convenient to use than the Command Line Interface.
Upgrade Instructions
Read the following steps very carefully
!
1.
WARNING:
Before performing this procedure, make sure that you can successfully boot from the
network using the manual boot procedure option 3 or 4. Refer to the section
Option 3: Boot from
Network
.
2. Copy the router software file KERNEL.F2K to a directory where it can be accessed by a TFTP server.
The TFTP server must be on the same LAN as the target router; i.e., there must not be a router or
gateway between the target system and the TFTP server. If the TFTP sever is not on the same network as
the target router, enter the gateway in the boot menu as described in the previous section.
3. Log into the Command Line Interface.
4. Enter
reboot
using the Command Line Interface to synchronize the file system and reboot the router.
Since the kernel is no longer stored in FLASH memory, the router will try to boot from the network. If
you have never set permanent boot parameters, the router attempts to locate a BOOTP or RARP server. If
the router successfully reboots from the server, go to step 7.
5. Select
4
to boot router software from the TFTP server using temporary network boot parameters. You are
prompted for: the router’s boot LAN IP address, the TFTP server’s IP address, the load address and the
filename of the router’s kernel saved on the server. Note that the LAN IP address is the address to be
used during the network boot and this may differ from the IP address ultimately assigned to the router.
Enter the temporary network boot parameters (hit the
return
key
for the load address). If all entered
information is valid, the router will boot from the network. An example follows:
Alternatively, select
5
to set permanent network boot parameters and then boot from the network with
selection
3
. You would use this option if you wish to boot from the network for a period of time before
copying the software to FLASH memory.
6. After the boot is complete, verify that the kernel is running successfully.
7. When you are satisfied that the new kernel is performing as expected, copy the kernel into FLASH
memory in the router typing the following commands:
copy [e-mail]:sfilename kernel.f2k
sync
where
xxx.xxx.xxx.xxx
is the TFTP server IP address, SFILENAME is the server filename of the kernel
and KERNEL.F2K
is the name of the file loaded from FLASH memory by the boot procedure. If you do
Enter selection: 4
Enter my IP address:
128.1.210.65
Enter server IP address:
128.1.210.70
Enter load address [80100]:
Enter file name: kernel.f2k