3Com Switch 7750 Series
Command Reference Guide – QoS Chapter 1 QoS Commands
1-24
Parameter
outbound: Guarantees the bandwidth for the outbound packets sent by the port.
acl-rule: Applied ACL rules which can be the combination of various ACL rules. For the
ways of combining ACLs and the description on related parameters, refer to Table 1-4
and Table 1-6.
system-index: Specifies an interior index value which is used when an ACL rule is
applied to the port. The index value ranges from 0 to 4294,967,295. This keyword is
only available when the ACL rule number is specified in the command. After the
specified ACL takes effect, there are three scenarios when you input the index value:
z If you do not input an index value or the index value you input is 0, the system will
automatically assign an index whose value is greater than 0;
z If the input index value is not 0 and does not conflict with the interior index used by
the system, the system will adopt the index value input by you;
z If the input index value is not 0 but conflicts with the interior index used by the
system, the system will reassign an index value.
When the specified ACL rule is not effective, the system will adopt the index value input
by you.
min-guaranteed-bandwidth: Minimum guaranteed bandwidth in kbps, in the range of 0
to 8,388,608. It must be the multiple(s) of 64.
max-guaranteed-bandwidth: Maximum guaranteed bandwidth in kbps, in the range of 0
to 8,388,608. It must be the multiple(s) of 64.
weight: Bandwidth weight in the range of 1 to 100, in percentage. It is used in the
situations when there is several traffic bandwidth guarantees at the current port. For
instance, there is 10 M of bandwidth supporting two flows on a port. The minimum
guaranteed bandwidth for each flow is 2 M, the maximum guaranteed bandwidth is 8 M,
and the bandwidth weights are 40% and 80% respectively. After the port guarantees
the minimum bandwidth for both flows (that is, 4 M), the remaining bandwidth (6M)
cannot support the maximum bandwidth of both flows (16M). If the bandwidth occupied
by the two flows exceeds the minimum guaranteed bandwidth, then the remaining
bandwidth (6 M) will be allocated to each flow according to the bandwidth weights
(40% : 80%).