Filter
Top Products
2-7
Cisco uBR924 Software Configuration Guide
OL-0337-05 (8/2002)
Chapter 2 DOCSIS-Bridging Configuration
Cisco IOS Configuration File
Cisco IOS Configuration File
The DOCSIS configuration file uses the type 43 Vendor-Specific Options field to specify that the
Cisco uBR924 router should download a Cisco IOS configuration file. The router’s console port is
automatically disabled as part of this process to prevent users at the remote site from reconfiguring the
router.
Note Downloading a Cisco IOS configuration file is not usually required for plug-and-play bridging. Instead,
it is normally used to configure the advanced feature sets that are described in the other chapters of this
guide.
Using the Vendor-Specific Information Field
Table 2-3 shows the values that would be entered in the Vendor-Specific Information Field (VSIF) to
download a Cisco IOS configuration file and automatically disable the console port.
Table 2-4 shows the values that would be entered in the Vendor-Specific Information Field (VSIF) to
specify a CLI command that should be executed after the Cisco uBR924 cable access router processes
the DOCSIS configuration file and comes online.
Tip The VSIF option to include CLI commands in the DOCSIS configuration file should be used to
specify a very limited number of commands for specialized applications. To perform a more
substantial configuration of the router, use VSIF option 128 to download a Cisco IOS configuration
file. Also see Appendix A, “Using Cisco IOS Software.”
Table 2-3 Downloading a Cisco IOS Configuration File (with console port disabled)
Field Value
Subtype 128
Length (number of characters in the filename)
Filename Complete filename, including path, for the Cisco IOS configuration file on the
TFTP servers specified in the DOCSIS configuration file.
Note The Cisco IOS configuration file can contain only global configuration
mode commands, not Privileged EXEC commands.
Table 2-4 Specifying CLI Commands
Field Value
Subtype 131
Length (number of characters in the command)
CLI Command The ASCII characters of one CLI command, as you would type it at the CLI
prompt. To specify multiple commands, use this option once for each command.
Note You can specify only global configuration mode commands, not Privileged
EXEC commands, in this field.