Each entry should consist of a single line containing the name of the TOS entry, the protocol name for which the entry is appropriate, the Type Of Service value for the entry, and any aliases that exist for the entry. Items are separated by any number of blanks and/or tab characters. A pound sign (#) indicates that the rest of the line is a comment and is not interpreted by routines that search the file. Blank lines in the file are ignored.
TOS entry names may contain any printable character other than a blank, tab, new-line, or comment (#).
A protocol name of a single asterisk () indicates that the entry is valid for all protocols.
The TOS value for the entry should be a list of either symbolic names, or numbers (octal, decimal, or hexadecimal), corresponding to TOS option bits or TOS precedence values, separated by vertical bar (|) characters. Perform an OR operation on the specified option bits or precedence values to yield the actual TOS value. Recognized symbolic names for TOS option bits are as follows:
none 0x00 delay 0x10 throughput 0x08 reliability 0x04 reserved1 0x02 reserved2 0x01Recognized symbolic names for TOS precedence values are as follows:
netcontrol 0xe0 internetcontrol 0xc0 crtic/ecp 0xa0 flashoverride 0x80 flash 0x60 immediate 0x40 priority 0x20 routine 0x00
# # Format of this file: # Application Proto TOS-bits aliases # # The Proto field may be "*" to mean it doesn't matter. # # For multiple values, use a "|", e.g, delay|throughput #
delay * delay lowdelay reliability * reliability highreliability throughput * throughput highthroughput
data tcp throughput bulk-data batch rcp data udp delay bulk-data batch tftp
interactive tcp delay rlogin telnet interactive udp delay
bootp * none domain udp delay nameserver domain tcp none nameserver egp udp none ftp-control tcp delay ftp-data tcp throughput icmp-errors icmp none icmp-queries icmp none igp * reliability route router routed nntp * none smtp-cmd tcp delay smtp-data tcp throughput #smtp tcp none # only if you can't switch !!! snmp udp reliability tftp udp delay