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Black Box Console Server user guide 232
ht (hardware type) set to 1 (=10Mb ethernet).
ha (hardware address) the ethernet address of the unit.
ip (internet address) enter the ip address to assign to the unit.
sm (subnet mask) enter the subnet mask of the unit.
hn (host name) enter as :hn:\ which causes the name at the start of the
file (Console Server_blue) to be allocated to this unit.
bf (bootfile name) enter the name of the file containing specific
configuration information; see An example bootfile on page 234.
ds (domain servers)enter the ip address of up to two nameservers.
gw (gateway)enter the ip address of a single passive gateway
Caution use the ‘gw’ flag only in very specific circumstances; see Note 5. below.
Notes on the above BOOTP tags:
1. Specify the fields that you wish; you do not have to specify all of them. E.g. if you
wish to download only the internet address to the unit, specify the ip field (you
must specify - as a minimum - the ha and ht fields).
2. If the subnet mask (sm) has not been explicitly specified by a BOOTPREPLY
packet, it will be derived from the class of internet address.
3. If domain name servers are specified their port number will always be set to the
default for a name server (53).
4. If you require a bootfile (bf) it must be on the same host as the bootptab file entry.
5. include the gw (gateway) flag only if your BOOTP server is on a different
network and your gateway (or router) is not configured to support RIP.
The effect of using the ‘gw’ field is:
- to make only this gateway available in the unit; it will be a passive gateway. You
can view the details of the gateway only in the cli, using the ‘show routes’
command.
- to turn off RIP in the unit; i.e. the unit will ignore RIP messages broadcast on the
network
- the unit will ignore gateways pre-configured in the unit or added after boot-up. It
will respond only to the single gateway.
- you delete the gateway as follows: omit the ‘gw’ field in the bootptab file entry
and re-boot the unit. You can now add/configure active and passive gateways into
the unit.