Specifying The App To Be Used At Reboot; Upgrading The Boot Rom; Identifying And Diagnosing Pluggable Transceivers - 3Com 4200G 12-Port Configuration Manual

Enabling of this function consumes some amounts of CPU resources. Therefore, if your network has a
high CPU usage requirement, you can disable this function to release your CPU resources.

Specifying the APP to be Used at Reboot

APP is the host software of the switch. If multiple APPs exist in the Flash memory, you can use the
command here to specify the one that will be used when the switch reboots.
Use the following command to specify the APP to be used at reboot:
To do...
Specify the APP to be used at
reboot

Upgrading the Boot ROM

You can use the Boot ROM program saved in the Flash memory of the switch to upgrade the running
Boot ROM. With this command, a remote user can conveniently upgrade the Boot ROM by uploading
the Boot ROM to the switch through FTP and running this command. The Boot ROM can be used when
the switch restarts.
Use the following command to upgrade the Boot ROM:
To do...
Upgrade the Boot ROM

Identifying and Diagnosing Pluggable Transceivers

Introduction to pluggable transceivers
At present, four types of pluggable transceivers are commonly used, and they can be divided into
optical transceivers and electrical transceivers based on transmission media as shown in
Table 4-1 Commonly used pluggable transceivers
Transceiver type
SFP (Small
Form-factor
Pluggable)
GBIC (GigaBit
Interface Converter)
Use the command...
boot boot-loader [ backup-attribute ]
{ file-url | device-name }
Use the command...
boot bootrom { file-url |
device-name }
Applied environment
Generally used for
100M/1000M Ethernet
interfaces or POS
155M/622M/2.5G
interfaces
Generally used for
1000M Ethernet
interfaces
4-3
Required
Whether can be an
optical transceiver
Yes
Yes
Remarks
Required
Remarks
Table 4-1.
Whether can be an
electrical transceiver
Yes
Yes