Znyx Networks bh5700 - Manual (Page 120)

for a u16 match. In many cases, there is a field name that can be used for the match, eliminating
the need to specify the offset.
U match selectors
Field Match Equivalent
ip src a.b.c.d/n u32 at 12
ip dst a.b.c.d/n u32 at 16
ip tos u8 at 1
ip dsfield u8 at 1
ip protocol u8 at 9
ip precedence u8 at 1
ip dport u16 at 22
ip sport u16 at 20
ip icmp_type u8 at 20
ip icmp_code u8 at 21
udp src u16 at 20
udp dst u16 at 22
tcp src u16 at 20
tcp dst u16 at 22
icmp type u8 at 20
icmp code u8 at 21
Table 7.3: U Match Selectors
Note that specifying a tcp, udp, or icmp field does not automatically include a match for the
appropriate IP protocol. To insure that only the desired packets are filtered, include a match for
IP protocol as well as the port or type. For example:
u32 match ip protocol 6 0xff match tcp dst 8 0xffff
Or
u32 match ip protocol 17 FF match ip sport 20 0xffff
zqosd
Thus far, tc has been used without zqosd. It is not sufficient to install software rules on the
Ethernet Switch Blade User's Guide release 3.2.2j page 120