[TCP] section contains entries that define variables for the Model S20 TCP/IP functionality. There are three ways for the 7318 to obtain this information:
Configuration file
/etc/bootptab file
NVRAM fields
If a value is not defined in the configuration file, the system uses the /etc/bootptab file. If the BOOTP information is not available, the system uses the nonvolatile random access memory (NVRAM) information. The IP address must be defined in one of these places (configuration file, /etc/bootptab file, or NVRAM) for the S20 TCP/IP functions to operate. All other parameters are optional. The entries in this section are as follows:
allowportswitch=0/1 Enables and disables access to port in the telnet command.
broadcast=IPAddress Defines the form of the broadcast address. The specified value overrides the value obtained by the BOOTP process. The default value is 255.255.255.255.
domain=DomainName Defines the Domain Name Service (DNS) domain name from which the 7318 obtains DNS name service. The default is the domain portion of the host name. If the host name does not have a domain portion, the default is null, and all host names have to be fully qualified.
frametype=Type Defines format of the frametype for the interface layer. Acceptable values for the Type parameter are: auto Specifies that the 7318 will automatically select the frametype.
ethernet_ii Specifies a standard Ethernet version II frametype.
ethernet_802.3 Specifies a IEEE 802.3 Ethernet frametype for Model P10.
ethernet_SNAP Specifies a IEEE 802.3 Ethernet frametype for Model S20.
gateway=IPAddress Defines the address of the default gateway for routing to unknown networks. The specified value overrides the value obtained by the BOOTP process. There is no default value for this entry.
The gateway can be defined as the destination address of a SLIP or PPP link which allows the 7318 to bridge to a remote network.
hostname=InternetName Defines the host name of the 7318, which may be domain-qualified. The specified value overrides the value obtained by the BOOTP process. There is no default value for this entry.
ipaddress=IPAddress Defines the IP address of the 7318. This assignment overrides assignments made in NVRAM or the bootptab file.
keepalive=0 Defines the keepalive time for telnetd sessions in seconds.
loopback=IPAddress Defines the address of the loopback device. The default value is 127.0.0.1.
netmask=IPAddress Defines the subnet mask for IP. The class of the local IP address determines the default value. The specified value overrides the value obtained by the BOOTP process.
nservers=N Defines the number of DNS name servers when specifying more than one. The maximum value for this entry is 3.
nameserverN=IPAddress Defines the addresses of DNS name servers. Valid values for the NN variable are 00, 01, or 02. There is no default value for this entry.
The following example uses all of the previous [TCP] entries:
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