Release Notes

Release Notes for the Catalyst 4500E Series Switch, Cisco IOS XE Release 3.3.xSG

OL-26675-02

Troubleshooting

• Troubleshooting MIBs, page 52

Netbooting from ROMMON

Netbooting using a boot loader image is not supported. Instead, use one of the following options to boot

an image:

1. Boot from an SD card by entering the following command:

rommon 1> boot slot0:<bootable_image>

2. Use ROMMON TFTP boot.

The ROMMON TFTP boot is very similar to the BOOTLDR TFTP boot, except that:

–

the BOOTLDR variable should not be set

–

the TFTP server must be accessible from the Ethernet management port on the supervisor

engine.

To boot from ROMMON, perform the following tasks while in ROMMON mode:

a. Ensure that the Ethernet management port on the supervisor engine is physically connected to the

network.

b. Verify that bootloader environment is not set by entering the unset bootldr command.

c. Set IP address of the Ethernet management port on the supervisor engine by entering the following

command: set interface fa1 ip_address ip_mask

For example, to set the supervisor engine Ethernet port with an IP address 172.16.1.5 and IP

mask 255.255.255.0, enter the following command:

rommon 2> set interface fa1 172.16.1.5 255.255.255.0

d. Set default gateway for the Ethernet management port on the supervisor engine by entering the

following command: set ip route default gateway_ip_address. The default gateway should be

directly connected to the supervisor engine Ethernet management port subnet.

e. Ping the TFTP server to ensure that there is connectivity to the server from the Ethernet management

port on the supervisor engine by entering the following command: ping tftp_server_ip_address.

f. Once the ping is successful, boot the image from the TFTP server by entering the following

command: boot tftp://tftp_server_ip_address / image_path_and_file_name

For example, to boot the Cisco IOS XE image cat4500e-universalk9.03.01.00

.SG.150-1.XO.bin located on the TFTP server 172.16.1.8, enter the following command:

rommon 3> boot tftp://172.16.1.8/tftpboot/cat4500e-universalk9.03.01.00

.SG.150-1.XO.bin

Troubleshooting at the System Level

This section contains troubleshooting guidelines for system-level problems:

• When the system is booting and running power-on diagnostics, do not reset the switch.

• Ensure that you do not mix the serial and Ethernet cables plugged into the supervisor engine. The

Fast Ethernet port (10/100 MGT) on the supervisor engine is inoperative. An Ethernet cable plugged

into the Fast Ethernet port is active only in ROMMON mode.