6-19
z
The software of the SRPUs and LPUs must be consistent so that the S7900E series can work
normally.
z
After upgrading the host software of the SRPUs of the S7900E series, you must reboot the LPUs to
synchronize the software of the LPUs with that of the SRPUs.
z
You are recommended to reboot the whole system after upgrading the software of the SRPUs.
Handling Upgrade Failure
If an upgrade fails, the system runs the original version. In this case, you need to check whether the
physical ports are well connected.
1) If no, reconnect them correctly and restart the upgrade.
2) If yes, check the information displayed on the HyperTerminal during the upgrade process for any
error. If there is any input error, correct it and restart the upgrade. For example,
z
If the XMODEM is used for upgrade, the baud rate of the HyperTerminal is not changed back to
9600 bps after you download the software by using a baud rate other than 9600 bps.
z
If TFTP is used for upgrade, the IP address of server or switch, the name of the file to be
downloaded, or the working path of TFTP server is wrong.
z
If FTP is used for upgrade, the IP address of server or switch, the name of the file to be downloaded,
the username, or the password is wrong.
3) If the upgrade fails when the physical connection is normal and no input errors are found, contact
the local agents of 3Com for help.
Handling Password Loss
If you lose the Boot ROM password of the switch, contact the local agents of 3Com.
